A330-200/300 Landing Gear Training Manual PDF
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Uploaded by EminentAspen
2019
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Summary
This document is a training manual for the A330-200/300 landing gear system, outlining differences from other models (A318/A319/A320/A321). It provides a system overview, focusing on the main landing gear (MLG), including the side stay assembly, MLG leg assembly, bogie alignment pitch trimmer, and bogie beam assembly. The document describes the hydraulic operation, shortening mechanism, and safety precautions.
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A330-200/300 DIFFERENCES FROM A318/A319/A320/A321 (CFM56/V2500) TRAINING MANUAL LANDING GEAR THIS MANUAL IS FOR TRAINING PURPOSES ONLY AND SHOULD NOT BE USED FOR ANY OTHER PURPOSE THESE...
A330-200/300 DIFFERENCES FROM A318/A319/A320/A321 (CFM56/V2500) TRAINING MANUAL LANDING GEAR THIS MANUAL IS FOR TRAINING PURPOSES ONLY AND SHOULD NOT BE USED FOR ANY OTHER PURPOSE THESE NOTES ARE NOT UPDATED B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR Landing Gear System Line Maintenance Briefing (2)............. 2 LANDING GEAR AND DOORS Landing Gear Special Features (3)........................... 60 Normal Extension and Retraction D/O (3)..................... 76 Free Fall Extension D/O (3)............................... 100 Door Ground Opening D/O (3)............................ 110 WHEELS AND BRAKES Normal Braking D/O (3)................................. 116 Alternate Braking D/O (3)................................ 130 Park/Ultimate Braking D/O (3)............................ 144 NOSE WHEEL STEERING Nose Wheel Steering D/O (3).............................. 150 MAINTENANCE PRACTICE Landing Gear MCDU Pages (2)............................ 166 Landing Gear System Base Maintenance (3).................. 170 G7508471 - G7UT0TU CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) TABLE OF CONTENTS Nov 21, 2008 32 - LANDING GEAR Page 1 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 1 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) SYSTEM OVERVIEW MAIN LANDING GEAR (MLG) Each Main Landing Gear (MLG), which retracts inboard into its wheel bay in the fuselage and the wing, includes these main parts: - a side stay assembly, - a MLG leg assembly, - a bogie alignment pitch trimmer, - a bogie beam assembly. The MLG is hydraulically operated during the normal extension/retraction sequence. The MLG leg includes a shortening mechanism, a bogie pitch trimmer and an oleo-pneumatic shock absorber. The shock absorber absorbs the taxi, TO and landing loads. The shock absorber is a capsule type that includes a sliding tube. It is an oleo-pneumatic unit that is installed in the main fitting. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 2 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 2 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 SYSTEM OVERVIEW - MAIN LANDING GEAR (MLG) CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 3 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 3 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) SYSTEM OVERVIEW (continued) MLG SIDE STAY ASSEMBLY A two-piece side stay assembly holds the MLG in the extended position. The lock stay is the mechanical down lock for the MLG. A lock stay keeps the side stay assembly stable in the locked down position. The lock stay is the mechanical down lock for the MLG. A ground lock pin has to be installed through the links of the lock stay, when they are in the over center position, to comply with safety precautions. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 4 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 4 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 SYSTEM OVERVIEW - MLG SIDE STAY ASSEMBLY CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 5 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 5 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) SYSTEM OVERVIEW (continued) MLG BOGIE ALIGNMENT PITCH TRIMMER The pitch trimmer is installed between the main fitting and the upper links. A set of articulated links, two upper and one lower, connects the main fitting to the front of the bogie beam. The green hydraulic system continuously supplies pressure to the pitch trimmer, which maintains the required geometry of the links during the retraction sequence, TO, and landing phases. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 6 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 6 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 SYSTEM OVERVIEW - MLG BOGIE ALIGNMENT PITCH TRIMMER CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 7 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 7 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) SYSTEM OVERVIEW (continued) MLG SHORTENING MECHANISM During the retraction the shortening mechanism decreases the overall length of the MLG to permit the gears to go into the available space in the bays. The shortening mechanism includes a turnbuckle link connected on one end to the airframe wing and a system of mechanical links that is attached to the shock absorber. The MLG movement operates the shortening mechanism during retraction or extension. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 8 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 8 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 SYSTEM OVERVIEW - MLG SHORTENING MECHANISM CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 9 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 9 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) SYSTEM OVERVIEW (continued) MLG DOORS Three doors close each MLG bay. They follow the shape of the belly fairing and protect the equipment in the bay from the airflow during flight. The MLG doors are hydraulically operated. Each main door is hinged at the keel beam and closes outboard. The fairing door is attached to the MLG leg and operates with it. The hinged door is connected to the MLG leg through an adjustable rod. When the main gear operates, the rod operates to move the hinged door. A lock collar can be installed on each door actuator when the aircraft is on the ground to prevent closure. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 10 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 10 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 SYSTEM OVERVIEW - MLG DOORS CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 11 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 11 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) SYSTEM OVERVIEW (continued) NOSE LANDING GEAR (NLG) Each Nose Landing Gear (NLG), which retracts forward into the NLG bay, includes these main parts: - a lock stay assembly, - a NLG leg assembly, - steering actuators. The MLG is hydraulically operated during the normal extension/retraction sequence. The L/G leg has a main fitting with a sliding tube assembly that includes the axle and a shock absorber with a wheel steering assembly. The nose wheels are steered by twin, double acting hydraulic actuators, which pivot on attachments on the main fitting. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 12 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 12 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 SYSTEM OVERVIEW - NOSE LANDING GEAR (NLG) CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 13 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 13 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) SYSTEM OVERVIEW (continued) NLG LOCK STAY ASSEMBLY The lock stay is installed between the main fitting and the center pivot point of the drag stay. It has an upper link and a lower link. The lock stay holds the drag stay in a straight configuration when the NLG is extended. A ground lock pin can be installed in the center pivot point of the lock stay when the NLG is down locked. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 14 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 14 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 SYSTEM OVERVIEW - NLG LOCK STAY ASSEMBLY CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 15 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 15 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) SYSTEM OVERVIEW (continued) NLG DOORS A lock collar can be installed on each door actuator when the aircraft is on the ground to prevent closure. Four doors and a fixed fairing close the NLG bay. The two forward doors are hydraulically operated. Each door has hinges at the side of the NLG bay and closes inward at the front of the bay. The two aft doors and the fixed fairing are mechanically operated. Each aft door has hinges at its outer edge. Adjustable rods connect the rear doors to the NLG leg. The fixed fairing is installed at the rear of the NLG leg. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 16 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 16 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 SYSTEM OVERVIEW - NLG DOORS CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 17 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 17 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) SYSTEM OVERVIEW (continued) NORMAL BRAKING MANUAL MODE In manual mode, the aircraft on ground, with the braking pedals operating, the related braking inputs are sent to the Braking and Steering Control Unit (BSCU), which energizes the normal selector valve to connect the green hydraulic power to the system. A pressure switch measures the HYDraulic pressure in the system and supplies the data to the BSCU. The automatic selector, operated by the hydraulic pressure, lets the green system supply the normal brakes and cuts the blue HYD pressure. When both hydraulic systems are available, by its internal design, the automatic selector gives priority to the green system. The servo valve, controlled by the BSCU, modulates the HYD pressure sent to the brakes according to the pedals demand and the Anti-Skid (A/SKID) protection. Wheel rotation speed and braking pressure values are fed back to the BSCU for braking and A/SKID computation. The BSCU sends data to the WHEEL page. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 18 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 18 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 SYSTEM OVERVIEW - NORMAL BRAKING MANUAL MODE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 19 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 19 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) SYSTEM OVERVIEW (continued) ALTERNATE BRAKING The alternate braking system is a hydro mechanical braking system. It is manually operated to decrease the speed of the aircraft when it moves on the ground. The alternate braking system automatically takes over if a failure occurs in the normal braking system or in case of green hydraulic system low pressure. It can operate with A/SKID or without A/SKID. The alternate braking system is controlled by the auxiliary low-pressure distribution and hydraulically operated by the blue hydraulic power. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 20 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 20 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 SYSTEM OVERVIEW - ALTERNATE BRAKING CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 21 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 21 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) SYSTEM OVERVIEW (continued) PARKING/ULTIMATE EMERGENCY BRAKING The parking/ultimate emergency braking system is an electro-hydraulic system. Its function is to prevent movement of the aircraft when it is parked. This system is electrically controlled and hydraulically operated by the blue hydraulic power or by the blue pressure brake accumulators. The parking/ultimate emergency braking system can also be used in an emergency braking mode to stop the aircraft when no other braking mode is available. When the PARKing BRaKe handle is set to ON, the parking brake control valve is activated and connects the blue pressure to the system. The dual shuttle valve, operated by the hydraulic pressure, connects the blue pressure to the fully opened servo valves and closes the supply downstream of the dual valve to isolate the brake pedals. The park brake control valve sends a signal to the BSCU to isolate the other braking systems. When the PARK BRK handle is set to OFF, the parking brake control valve cuts the blue pressure and the dual shuttle valve re-opens the hydraulic supply from the dual valve. The triple pressure indicator shows the available pressure from the brake accumulators. It also shows the pressure applied on the MLG brakes. This pressure is limited by the system to 2.580 psi. The accumulators have sufficient capacity to hold the brakes G7508471 - G7UT0TU - FM32B1000000003 on for a minimum time of twelve hours. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 22 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 22 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 SYSTEM OVERVIEW - PARKING/ULTIMATE EMERGENCY BRAKING CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 23 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 23 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) SYSTEM OVERVIEW (continued) SAFETY PRECAUTIONS When working on the L/G system, you must obey all the AMM safety procedures. This will prevent injury to persons and/or damage to the aircraft. The main safety precautions relative to the L/G system are: - make sure that all circuits are isolated during any maintenance task. Unwanted electrical or hydraulic power can be dangerous, - make sure that the travel ranges of the L/G and doors are clear. Movement of the L/G and doors can cause injury and/or damage, - make sure that the wheel chocks are in position and the L/G ground safety locks are installed. This prevents unwanted movement of the aircraft or L/G, - let the brakes and the wheels become cool before going near the L/G. Do not apply a liquid or gas fire extinguisher directly on a hot wheel or brake unit. This could cause an explosion, - deflate the tire before removing the wheel. This prevents a possible explosion, - before removal or installation of a component, make sure that a man can hold it because some components are heavy. If one falls, it can cause injury to persons and damage to equipment, - during L/G servicing, do not let high pressure gas get in contact with G7508471 - G7UT0TU - FM32B1000000003 the skin. Gas bubbles in the blood can kill a person, - during work near the wheel brakes, use safety glasses and a mask. Carbon brake dust can cause irritation to the eyes or lungs. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 24 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 24 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 SYSTEM OVERVIEW - SAFETY PRECAUTIONS CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 25 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 25 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) MAINTENANCE INSTALLATION OF THE SAFETY DEVICES ON THE L/G WARNING: INSTALL ALL SAFETY DEVICES AND WARNING NOTICES BEFORE STARTING ANY MAINTENANCE TASK ON OR NEAR THE L/G, THE L/G DOORS, OR THE FLIGHT CONTROLS. USE SOLVENTS AND CLEANING AGENTS IN WELL-VENTILATED AREAS. MAKE SURE THAT THE WHEEL CHOCKS ARE IN POSITION, MOVEMENTS OF THE A/C COULD BE DANGEROUS. Install the ground safety lock pins in order to secure the down lock mechanisms. If no other hydraulic servicing tasks have to be completed, the area can be closed. All tools, test and support used during this procedure have to be removed. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 26 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 26 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - INSTALLATION OF THE SAFETY DEVICES ON THE L/G CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 27 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 27 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - INSTALLATION OF THE SAFETY DEVICES ON THE L/G CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 28 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 28 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL This Page Intentionally Left Blank G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 29 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 29 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) MAINTENANCE (continued) INSTALLATION OF THE SAFETY DEVICES ON THE L/G DOORS After door ground opening and before starting maintenance tasks inside the L/G bay, the doors must be secured by fitting safety sleeves on the door actuators. Different safety precautions have to be carried out. The doors are secured by installing the safety collar on each hydraulic actuator. If no other hydraulic servicing tasks have to be completed, the area can be closed. All tools, test and support used during this procedure have to be removed. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 30 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 30 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - INSTALLATION OF THE SAFETY DEVICES ON THE L/G DOORS CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 31 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 31 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - INSTALLATION OF THE SAFETY DEVICES ON THE L/G DOORS CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 32 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 32 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL This Page Intentionally Left Blank G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 33 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 33 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) MAINTENANCE (continued) L/G DOORS GROUND OPENING Make sure that the L/G lever agrees with the position of the L/G and the free-fall extension switch is in the OFF position. Make sure that the area is clear and the doors can be opened without any obstruction. For the MLG, open the access panel located FWD of the MLG. Pull the ground door-opening handle downwards to open the door uplocks. Secure the handle with the safety pin and install the safety devices on the MLG door actuators. The NLG ground door-opening handle is installed on the aft bulkhead of the NLG bay. Pull the ground door-opening handle downwards to open the NLG door uplocks. Secure the handle with the safety pin and install the safety devices on the NLG door actuators. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 34 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 34 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - L/G DOORS GROUND OPENING CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 35 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 35 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - L/G DOORS GROUND OPENING CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 36 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 36 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - L/G DOORS GROUND OPENING CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 37 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 37 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) MAINTENANCE (continued) L/G DOORS GROUND CLOSING Pressurize the green hydraulic system. Remove the safety devices from the door actuators. Push the ground door-opening handle upward to close the doors, making sure that the uplocks engage. Secure the handle with the safety pin and close the access panel. De-pressurize the green hydraulic system. Remove the ground support equipment, special tooling, access platforms and all warning notices. Make sure that the MLG maintenance doors are closed before dispatch. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 38 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 38 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - L/G DOORS GROUND CLOSING CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 39 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 39 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - L/G DOORS GROUND CLOSING CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 40 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 40 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL This Page Intentionally Left Blank G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 41 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 41 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) MAINTENANCE (continued) TYRE PRESSURE CHECK Make sure that each tire is cold before you measure its inflation pressure. NOTE: A tire is cold after approximately 3 hours since its previous operation. These pressures apply for loaded tires. You must obey the instructions given by the AMM table 32-41-00 when you measure the tire pressures: If there is a large temperature decrease (25 deg C) between the departure and the destination airports, the given tire pressures must be adjusted (Ref. TASK 12-14-32-614-801). When the tires are still hot if you think that a tire has a low pressure, do a pressure check of the tires on the same landing gear and make a record of the tire pressures: - identify the highest pressure that you recorded, - if the pressure of a tire is less than 90% of the highest tire pressure that you recorded, inflates that tire to the highest recorded pressure, - make a record in the aircraft technical log. CAUTION: YOU MUST NOT DECREASE THE PRESSURE OF G7508471 - G7UT0TU - FM32B1000000003 A HOT TIRE.THIS PREVENTS AN INCORRECT LOW PRESSURE WHEN THE TIRE IS COLD. NOTE: It is possible that the tire pressure can be higher than the maximum nominal value. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 42 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 42 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - TYRE PRESSURE CHECK CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 43 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 43 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) MAINTENANCE (continued) CHECK BRAKE PACK WEAR INDICATORS WARNING: OBEY THE L/G GENERAL WARNINGS AND SAFETY PROCEDURES. LET THE BRAKES AND WHEELS COOL DOWN BEFORE WORKING ON THEM. DO NOT USE LIQUID OR GAS FIRE EXTINGUISHERS DIRECTLY ON A HOT WHEEL OR BRAKE. Make sure that the wheel chocks are in position. Set the PARK BRK to ON and check the accumulator pressure on the blue system triple gauge indicator. If there is at least one brake wear indicator installed and if the indicator is within limits, the brake is serviceable. If there is no wear indicator installed, the brake must be de-activated until it can be replaced. Check each MLG brake wear indicator pin with the parking brake applied. If the brake wear indicator pin is flush with the brake-housing bracket, the brake must be replaced. If no other hydraulic servicing tasks have to be completed, the area can be closed. All tools, test and support used during this procedure have to be removed. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 44 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 44 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - CHECK BRAKE PACK WEAR INDICATORS CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 45 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 45 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - CHECK BRAKE PACK WEAR INDICATORS CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 46 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 46 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL This Page Intentionally Left Blank G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 47 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 47 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) - fully push in the related brake pedals and hold them in this position, MAINTENANCE (continued) - make sure that there are no leaks on the green disconnected hydraulic-pressure line, MLG WHEEL BRAKE DEACTIVATION PROCEDURE - release the brake pedals, - depressurize the green hydraulic system, WARNING: MAKE SURE THAT THE SAFETY DEVICES AND - fully push in the related brake pedals and hold them in this position, THE WARNING NOTICES ARE IN POSITION - make sure that there are no leaks on the blue disconnected BEFORE YOU START A TASK ON OR NEAR: hydraulic-pressure line, - THE FLIGHT CONTROLS, - release the brake pedals, - THE FLIGHT CONTROL SURFACES, On the EWD, make sure that the caution BRAKES RELEASED - THE LANDING GEAR AND THE RELATED BRAKE * RELEASED does not show. (* = wheel No.). Do the EIS DOORS, stop procedure and de-energize the aircraft electrical circuits. - COMPONENTS THAT MOVE. MOVEMENT OF COMPONENTS CAN KILL OR INJURE PERSONS. MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE CORRECTLY INSTALLED ON THE LANDING GEAR. THIS PREVENTS UNWANTED MOVEMENT OF THE LANDING GEAR. Make sure that the green and blue hydraulic systems are depressurized. Set the PARK BRK to the OFF position. Disconnect the half coupling, and use a clean miscellaneous and cleaning agents to clean it. G7508471 - G7UT0TU - FM32B1000000003 Safety the half coupling to the brake hose fairlead with the lockwire. Tighten the lockwire and twist to lock it. Put the blanking cap on the fixed half coupling. Remove the blanking screw and the washer from the applicable bleed valve. Use a miscellaneous at the applicable bleed valve to catch the hydraulic fluid. Loosen the bleed valve to release the residual hydraulic pressure from the isolated brake. Tighten the bleed valve and install the washer and the blanking screw. Tighten the blanking screw. Energize the aircraft electrical circuits. Start the EIS. Pressurize the green hydraulic system. On the right center instrument panel, set the A/SKID switch to ON. Then do the following test: CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 48 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 48 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - MLG WHEEL BRAKE DEACTIVATION PROCEDURE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 49 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 49 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) MAINTENANCE (continued) ACTIVATING THE MLG SEAL CHANGEOVER VALVE Obey the L/G general warnings and safety precautions. Make sure that the green hydraulic system is depressurized and the wheel well doors are closed. Open and safety tag the related C/Bs. Make sure that the MLG safety devices are installed and that the wheel chocks are in place. Place a warning notice in the cockpit to prevent L/G operation. Also place a warning notice not to open the MLG door (if the door is opened while the leg is deflated, the door will touch the ground). Check the access plate to make sure that the spare seal changeover valve has not been activated. If the message "Spare Seal Energized" is visible, the seal has been activated and the shock absorber seals must be replaced. Remove the access plate, then fully depressurize the shock absorber to get access to the spare seal changeover valve. Turn the spare seal changeover valve fully clockwise and safety this position. Pressurize the shock absorber, then clean the chromed part of the strut with a clean lint-free cloth and approved cleaning agents. Check/replenish the fluid contents at the next opportunity. Install the access plate again to display the message "Spare Seal Energized". G7508471 - G7UT0TU - FM32B1000000003 Remove the ground support equipment, special tooling, and access platforms. Remove all warning notices and close C/Bs. CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 50 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 50 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - ACTIVATING THE MLG SEAL CHANGEOVER VALVE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 51 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 51 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - ACTIVATING THE MLG SEAL CHANGEOVER VALVE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 52 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 52 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - ACTIVATING THE MLG SEAL CHANGEOVER VALVE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 53 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 53 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - ACTIVATING THE MLG SEAL CHANGEOVER VALVE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 54 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 54 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL This Page Intentionally Left Blank G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 55 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 55 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) MAINTENANCE (continued) ACTIVATING THE NLG SEAL CHANGEOVER VALVE Place a warning notice in the cockpit to prevent L/G operation and make sure that the wheel chocks are in place. Make sure that the green hydraulic system is depressurized. Open the NLG doors and fit the NLG safety devices on the door actuator. Open and safety tag the related C/Bs. Check that the colored band of the spare seal changeover valve is in view. This confirms that the valve has not been already activated. If it has been activated, the NLG shock absorber seals have to be replaced. Remove the cap screw. Turn the seal changeover valve counter clockwise until it is closed. The colored band will be out of view. Install the cap screw and safety the cap screw with a lock wire. Clean the chromed part of the NLG shock strut with a clean lint-free cloth and approved cleaning agents. Check/replenish the fluid contents of the NLG shock strut at the next opportunity. Remove the ground support equipment, special tooling, and access platforms. Remove all warning notices. Close C/Bs. G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 56 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 56 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - ACTIVATING THE NLG SEAL CHANGEOVER VALVE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 57 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 57 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32B1000000003 MAINTENANCE - ACTIVATING THE NLG SEAL CHANGEOVER VALVE CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 58 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 58 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL This Page Intentionally Left Blank G7508471 - G7UT0TU - FM32B1000000003 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SYSTEM LINE MAINTENANCE BRIEFING (2) Nov 20, 2008 32 - LANDING GEAR Page 59 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 59 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SPECIAL FEATURES (3) MLG SHOCK ABSORBER The shock absorber absorbs the taxi, take-off and landing loads. The shock absorber is a capsule type that includes a sliding tube. It is an oleo-pneumatic unit that is installed in the main fitting. When it is compressed the load is transmitted to the hydraulic fluid and gas that fill the shock absorber. The recoil stroke is slow, which makes sure that the aircraft does not become airborne again after it touches down on landing. The cylinder is the part of the shock absorber that moves when the landing, take off or taxi loads increase or decrease. Its external face has a wear-resistant surface at the bearing interfaces. The cylinder operates around the piston, where the compression of the gas occurs. During the compression stroke, the cylinder moves up around the piston. Thus the volume in the cylinder decreases. This increases the pressure in the piston chamber. As the hydraulic fluid flows into the piston chamber, the gas compresses to absorb the compression load. The pressure in the piston chamber forces the hydraulic fluid to return to the cylinder chamber. At the same time, the volume of recoil chamber is decreased. As the cylinder (sliding tube) extends, seals against the piston seal closed ports in the piston to decrease the flow from the recoil chamber. Thus the recoil slows at the end of the shock absorber extension stroke. G7508471 - G7UT0TU - FM32D1000000002 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SPECIAL FEATURES (3) Nov 20, 2008 32 - LANDING GEAR Page 60 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 60 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32D1000000002 MLG SHOCK ABSORBER CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SPECIAL FEATURES (3) Nov 20, 2008 32 - LANDING GEAR Page 61 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 61 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SPECIAL FEATURES (3) NLG/CLG SHOCK ABSORBER The shock absorber is a two-chamber, oleo-pneumatic telescopic strut, made from the main fitting and the sliding tube. The main fitting has a first stage chamber with nitrogen gas and hydraulic fluid, with no separation between the gas and the fluid. The sliding tube has a second stage high-pressure gas chamber. A floating piston in the sliding tube separates the first stage chamber from the second stage chamber. Damping rings and fixed orifices in the upper and lower diaphragm control the movement of the fluid between the first and second stages to decrease the speed at which the shock absorber extends. There is also a damping ring between the first stage chamber and the recoil chamber. G7508471 - G7UT0TU - FM32D1000000002 CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SPECIAL FEATURES (3) Nov 20, 2008 32 - LANDING GEAR Page 62 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 62 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL G7508471 - G7UT0TU - FM32D1000000002 NLG/CLG SHOCK ABSORBER CMQ - SA family to A330-200/300 - T1+T2 (Lvl 2&3) (RR Trent 700) LANDING GEAR SPECIAL FEATURES (3) Nov 20, 2008 32 - LANDING GEAR Page 63 B1/B2_A330_DIFF_FR_A320 DVIATION TRAINING SERVICES 63 REV. 1 FOR TRAINING PURPOSES ONLY DATE: 01.06.2019 A330-200/300 TECHNICAL TRAINING MANUAL LANDING GEAR SPECIAL FEATURES (3) SHORTENING MECHANISM During retraction the shortening mechanism operates to
