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Questions and Answers
What is the recommended replacement rate for split pins of the brake shoe key during POH?
What is the recommended replacement rate for split pins of the brake shoe key during POH?
Why is the 100% replacement of elastomeric pads recommended during POH?
Why is the 100% replacement of elastomeric pads recommended during POH?
What is the primary role of the knuckles in the draw and buffing gear assembly?
What is the primary role of the knuckles in the draw and buffing gear assembly?
What is the action recommended for CTRB locking plates during POH?
What is the action recommended for CTRB locking plates during POH?
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What is the committee's recommendation regarding indigenous knuckles?
What is the committee's recommendation regarding indigenous knuckles?
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What is the recommended action for the Rotary Lock Lift Assembly due to its condition after one POH cycle?
What is the recommended action for the Rotary Lock Lift Assembly due to its condition after one POH cycle?
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What results from the wear of the Yoke Pin support plate liner?
What results from the wear of the Yoke Pin support plate liner?
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What is the expected life of the Shank Wear Plate component?
What is the expected life of the Shank Wear Plate component?
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Why is the Striker Casting Wear Plate component significant?
Why is the Striker Casting Wear Plate component significant?
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What is the extent of replacement some workshops are achieving for the Yoke Pin support plate liner?
What is the extent of replacement some workshops are achieving for the Yoke Pin support plate liner?
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What does interaction of the Yoke Pin's vertical movement cause?
What does interaction of the Yoke Pin's vertical movement cause?
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What level of replacement does the committee recommend for the worn out Wear Plate components?
What level of replacement does the committee recommend for the worn out Wear Plate components?
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What is the primary reason for the majority of uncoupling cases in locks?
What is the primary reason for the majority of uncoupling cases in locks?
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What does the committee recommend for the indigenous CBC locks?
What does the committee recommend for the indigenous CBC locks?
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What specific issue is commonly found with the Anti-Creep Lug of the Lock Lifter Assembly?
What specific issue is commonly found with the Anti-Creep Lug of the Lock Lifter Assembly?
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What is the dimension of the bearing piece slot that becomes worn out in service?
What is the dimension of the bearing piece slot that becomes worn out in service?
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How does the alignment of the Lock Lifter Assembly get disturbed?
How does the alignment of the Lock Lifter Assembly get disturbed?
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What is the recommended frequency of replacement for the lock lift assembly?
What is the recommended frequency of replacement for the lock lift assembly?
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What percentage does the consumption of lock lift assemblies vary between workshops?
What percentage does the consumption of lock lift assemblies vary between workshops?
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What is being developed by RDSO as per WD-70-BD-10?
What is being developed by RDSO as per WD-70-BD-10?
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What action should be taken for serviceable locks during train examinations?
What action should be taken for serviceable locks during train examinations?
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What is the primary concern regarding dirt collectors in depots during ROH?
What is the primary concern regarding dirt collectors in depots during ROH?
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What does the committee recommend concerning the Dirt Collector Filter?
What does the committee recommend concerning the Dirt Collector Filter?
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Which of the following items is specified for 100% replacement during ROH due to its perishable nature?
Which of the following items is specified for 100% replacement during ROH due to its perishable nature?
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How are MU washers categorized in terms of maintenance recommendations?
How are MU washers categorized in terms of maintenance recommendations?
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What is the nature of the Tank wagons' Filling Pipe Joint Ring?
What is the nature of the Tank wagons' Filling Pipe Joint Ring?
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Which item is recommended to be replaced during POH due to the perishable nature of its materials?
Which item is recommended to be replaced during POH due to the perishable nature of its materials?
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What happens to rubber items like the Dirt Collector Washer when assemblies are opened?
What happens to rubber items like the Dirt Collector Washer when assemblies are opened?
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What is the significance of the recommended 100% replacement policy during ROH?
What is the significance of the recommended 100% replacement policy during ROH?
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How are the rubber gaskets described in terms of physical characteristics?
How are the rubber gaskets described in terms of physical characteristics?
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Which item is specifically associated with the risk of malfunction if not maintained properly?
Which item is specifically associated with the risk of malfunction if not maintained properly?
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What is the primary reason for the 100% replacement of the CASNUB bogie side frame during POH?
What is the primary reason for the 100% replacement of the CASNUB bogie side frame during POH?
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Why should no weld metal deposit be done on the pedestal jaw surfaces?
Why should no weld metal deposit be done on the pedestal jaw surfaces?
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What does the committee recommend for the pedestal jaw liners?
What does the committee recommend for the pedestal jaw liners?
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Which of the following items is expected to last from POH to POH without immediate replacement?
Which of the following items is expected to last from POH to POH without immediate replacement?
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What is required to weld the liners that are suggested for replacement?
What is required to weld the liners that are suggested for replacement?
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What must be done to the bolt when dismantling the wheel from the bogie?
What must be done to the bolt when dismantling the wheel from the bogie?
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What type of wear is primarily associated with the bolster land surface liner?
What type of wear is primarily associated with the bolster land surface liner?
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What aspect is emphasized as crucial for the liners in the original design according to the committee's recommendation?
What aspect is emphasized as crucial for the liners in the original design according to the committee's recommendation?
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Which item requires only replacement during POH due to consistent wear?
Which item requires only replacement during POH due to consistent wear?
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What is the general purpose of these recommendations by the committee?
What is the general purpose of these recommendations by the committee?
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What issue is primarily observed with the Anti-Creep Lug of the Lock Lifter Assembly?
What issue is primarily observed with the Anti-Creep Lug of the Lock Lifter Assembly?
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What has been noted as a common result of loose riveting in the Lock Lifter Assembly?
What has been noted as a common result of loose riveting in the Lock Lifter Assembly?
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Which recommendation is made for the CBC locks as per the committee's observation?
Which recommendation is made for the CBC locks as per the committee's observation?
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Why is the wear of the bearing piece slot considered significant?
Why is the wear of the bearing piece slot considered significant?
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What percentage variation in consumption of lock lift assemblies is observed between workshops?
What percentage variation in consumption of lock lift assemblies is observed between workshops?
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What type of locks is being replaced with upgraded versions according to WD-70-BD-10?
What type of locks is being replaced with upgraded versions according to WD-70-BD-10?
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What is a direct consequence of the wear on the operating handle's positioning?
What is a direct consequence of the wear on the operating handle's positioning?
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What is the significance of upgrading knuckles as per WD-70-BD-10?
What is the significance of upgrading knuckles as per WD-70-BD-10?
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During the inspection of braking components, which item is noted for 100% replacement due to its tendency to become distorted?
During the inspection of braking components, which item is noted for 100% replacement due to its tendency to become distorted?
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What are the consequences of removing the locking plates as recommended during UST of wheel sets?
What are the consequences of removing the locking plates as recommended during UST of wheel sets?
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What is the role of elastomeric pads in train maintenance, as highlighted in the recommendations?
What is the role of elastomeric pads in train maintenance, as highlighted in the recommendations?
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Why might workshops opt to change the elastomeric pads before reaching the full POH duration?
Why might workshops opt to change the elastomeric pads before reaching the full POH duration?
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What is the justification for the 100% replacement of the CASNUB bogie?
What is the justification for the 100% replacement of the CASNUB bogie?
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Why is the 100% replacement of the CTRB locking plates recommended during ROH?
Why is the 100% replacement of the CTRB locking plates recommended during ROH?
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What impact does worn out Striker Casting Wear Plates have?
What impact does worn out Striker Casting Wear Plates have?
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What is a common issue with split pins during the replacement process?
What is a common issue with split pins during the replacement process?
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What is emphasized about the need for replacing wear plates within the CBC component?
What is emphasized about the need for replacing wear plates within the CBC component?
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Which component's locking plates are replaced due to damage observed during regular inspections?
Which component's locking plates are replaced due to damage observed during regular inspections?
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What is the basis for the recommendation to replace split pins 100% in some depots?
What is the basis for the recommendation to replace split pins 100% in some depots?
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What type of item is compared to the CASNUB bogie in terms of replacement necessity?
What type of item is compared to the CASNUB bogie in terms of replacement necessity?
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Why are locking plates in the CBC component removed during wheel set inspections?
Why are locking plates in the CBC component removed during wheel set inspections?
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What is the primary reason for the committee's recommendation of 100% replacement of the CASNUB bogie side frame during POH?
What is the primary reason for the committee's recommendation of 100% replacement of the CASNUB bogie side frame during POH?
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Why is it important that no weld metal deposit is done on the pedestal jaw surfaces?
Why is it important that no weld metal deposit is done on the pedestal jaw surfaces?
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What action is required to dismantle the wheel from the bogie?
What action is required to dismantle the wheel from the bogie?
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What does the committee suggest regarding the original design of the liners?
What does the committee suggest regarding the original design of the liners?
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Which item is expected to wear and necessitate 100% replacement during POH?
Which item is expected to wear and necessitate 100% replacement during POH?
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What is the role of liners that are required to be welded, according to the committee's recommendation?
What is the role of liners that are required to be welded, according to the committee's recommendation?
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What is a potential consequence of neglecting to replace the pocket slope liner during POH?
What is a potential consequence of neglecting to replace the pocket slope liner during POH?
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How does the committee recommend dealing with worn-out caster lining components?
How does the committee recommend dealing with worn-out caster lining components?
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Which condition may lead to additional wear of the bolster land surface liner?
Which condition may lead to additional wear of the bolster land surface liner?
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What is the fundamental purpose behind the committee's replacement recommendations?
What is the fundamental purpose behind the committee's replacement recommendations?
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What is the primary reason for the recommended 100% replacement rate of the Dirt Collector Filter during ROH?
What is the primary reason for the recommended 100% replacement rate of the Dirt Collector Filter during ROH?
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Which of the following items is acknowledged as being perishable and requiring 100% replacement during ROH?
Which of the following items is acknowledged as being perishable and requiring 100% replacement during ROH?
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Why are items like the MU washers recommended for 100% replacement during ROH?
Why are items like the MU washers recommended for 100% replacement during ROH?
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What is a common issue identified with dirt collectors in depots during maintenance operations?
What is a common issue identified with dirt collectors in depots during maintenance operations?
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What role do the rubber gaskets play in the context of air brake system maintenance?
What role do the rubber gaskets play in the context of air brake system maintenance?
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Which item is identified as a critical replacement during the Periodic Overhaul (POH) due to its perishable nature?
Which item is identified as a critical replacement during the Periodic Overhaul (POH) due to its perishable nature?
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How are the rubber items like the Dirt Collector Washer classified in the maintenance recommendations?
How are the rubber items like the Dirt Collector Washer classified in the maintenance recommendations?
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What potential consequence arises from failing to perform regular replacements of recommended components during ROH?
What potential consequence arises from failing to perform regular replacements of recommended components during ROH?
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What is indicated about AR Drain Plug leather washers in terms of maintenance actions?
What is indicated about AR Drain Plug leather washers in terms of maintenance actions?
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Which of the following items is specifically mentioned as needing to be replaced due to its nature of degradation over time?
Which of the following items is specifically mentioned as needing to be replaced due to its nature of degradation over time?
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Study Notes
Appendix V - Must Change Items in Freight Stock During POH & IOH
-
Items to be replaced during ROH (Routine Overhaul):
- SF Key nut bolt with washer: 100% replacement is needed during dismantling of wheels.
- Split Pin 12 x 110 mm: 100% replacement due to damage/distortion in some depots.
- CTRB Locking plate: 100% replacement for damage during wheel set inspection.
- Striker casting Wear Plate: 100% replacement due to wear and impact on uncoupling.
- CBC: 100% replacement, due to wear in contact with CBC shank.
- Air Brake System – Dirt Collector Filter: 100% replacement recommended due to multiple cases of malfunction.
Appendix V – Must Change Items in Freight Stock During POH (Periodic Overhaul)
-
CASNUB BOGIE Side Frame:
- Pedestal Jaw Liners: 100% replacement due to wear.
- SF Key nut bolt with washer: 100% replacement.
- Bolster Land surface liner: 100% replacement for wear.
- Pocket slope liner: 100% replacement due to wear.
- Rotation stop lug liner: 100% replacement due to wear.
-
Bogie Brake Gear:
- Split Pin 12 x 110 mm: 100% replacement due to distortion/damage.
- CTRB Locking plate: 100% replacement for damage during inspection.
- Elastomeric pads: 100% replacement due to wear.
-
Draw and Buffing Gear Assembly:
- Knuckle: 100% one-time replacement with upgraded knuckles as per WD70-BD-10.
- CBC Lock: 100% one-time replacement with upgraded CBC locks as per WD70-BD-10.
-
Rotary Lock Lift Assembly: 100% one-time replacement with upgraded lock lift assembly as per WD70-BD-10.
- Bearing Piece: 100% replacement due to wear, slot damage.
-
Yoke Pin support plate liner: 100% replacement, due to wear.
-
Shank Wear Plate: 100% replacement due to wear.
- Striker Casting Wear Plate: 100% replacement due to wear.
-
Air Brake System:
- Dirt Collector Filter: Recommended for 100% replacement due to malfunction risks.
-
Tank wagons:
- Filling Pipe Joint Ring: 100% replacement recommended.
- Ma Hole Cover Sealing Ring: 100% replacement.
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Description
This quiz covers essential items that need to be replaced during the Periodic Overhaul (POH) and Routine Overhaul (ROH) of freight stock. Familiarize yourself with the specific items and their reasons for replacement, which are critical to maintaining safety and efficiency. Test your knowledge on the maintenance requirements and practices in freight operations.