LHS Army Quiz & Flashcards for Quick Learning

Questions and Answers

What does GCWR stand for?

General Combination Weight Rating

Great Combination Weight Rating

Gross Combination Weight Rating (correct)

Gross Cargo Weight Rating

What is the weight of GCWR?

109,000

What does HEMTT stand for?

Heavy Expanded Military Tactical Truck

What does ECHU stand for?

Enhanced Containers Handling Unit Signup and view all the answers

What does LHS stand for?

Loading Handling System Signup and view all the answers

What is the primary design purpose of LHS?

Loading/unloading flatracks Signup and view all the answers

What is the fording depth of LHS?

48in in deep water for 5 min Signup and view all the answers

What is the normal operating range of all models?

300 miles based upon 154 gallons Signup and view all the answers

What does PTO stand for?

Power take-off Signup and view all the answers

What is the maximum height that the LHS can reach?

22 ft 2 in Signup and view all the answers

What is the maximum engine speed for the vehicle?

1,500 rpm Signup and view all the answers

When does the Low Fuel Indicator light go Amber?

When fuel is below 1/8 of full tank Signup and view all the answers

When is the Over Speed Indicator illuminated Red?

When engine speed exceeds 2,450 rpm Signup and view all the answers

What is the fording depth and duration for the M1120 LHS without damaging equipment?

48in for 5min Signup and view all the answers

How many positions does the hydraulic selector switch have?

5 Signup and view all the answers

Which position is used on the hydraulic selector switch when automatic circuits have failed?

Mans Trans Signup and view all the answers

How often should you inspect your chain including the hooks?

Monthly Signup and view all the answers

How often should you inspect your web tiedown straps?

Before each use Signup and view all the answers

What should you look for when inspecting a chain link and the hook?

Burns, cuts and tears Signup and view all the answers

Ensure that straps are tensioned to form at least _____ turns to takeup spool.

1 1/2 Signup and view all the answers

Where is the center of gravity on the M1077 flatracks?

106 in from front edge of flatracks Signup and view all the answers

What are Class 3 items?

Petroleum, oil, lubricants Signup and view all the answers

When operating the M1120 vehicle with the M1076 trailer, the heaviest flatracks can be loaded on the trailer.

False Signup and view all the answers

What is the difference between the M1120A4 and M1120A2?

Cursing range Signup and view all the answers

What is the overall length of the M1120A4?

402in Signup and view all the answers

How much does the ECHU lift frame weigh?

980lb Signup and view all the answers

What is the weight limit for the small ring?

10,000lbs Signup and view all the answers

What is the weight limit for the big or large ring?

25,000lbs Signup and view all the answers

Break system failure (low air) will turn red when either front or rear air pressure is below:

70 psi and a buzzer sound Signup and view all the answers

Describe the engine brake positions.

High: maximum engine brake, Medium: less engine brake, Low: less amount of engine brake Signup and view all the answers

When does the parking brake control activate?

When air pressure drops below 30 psi Signup and view all the answers

What are the positions of the Hydraulic Selector Switch?

-off -auto -manual -frame -transit Signup and view all the answers

What is the maximum trailer bumper point height?

0.5in Signup and view all the answers

What is the primary mission of the ECHU?

To allow the PLS and the HEMTT LHS to load, transport and unload ISO containers Signup and view all the answers

When does the transmission oil temperature gauge illuminate red?

When transmission temp is above 482 degrees or torque temperature is above 350 degrees Fahrenheit Signup and view all the answers

What is the load capacity limit for LHS?

11 tons Signup and view all the answers

What indicates air filter restrictions?

Red light will appear, push yellow button gauge to reset Signup and view all the answers

What is the LHS nomenclature?

M1120A4 Signup and view all the answers

What is the function of the air charge cooler?

Intake air to cool down: engine, transmission oil and hydraulic fluid Signup and view all the answers

What slope can't exceed for loading or unloading LHS?

5 degrees Signup and view all the answers

What does PLS stand for?

Palletized loading system Signup and view all the answers

What is the idle engine speed?

1500 rpm Signup and view all the answers

What is low idle speed?

600 rpm Signup and view all the answers

Before using the hydraulic selector switch, what must the engine speed be?

Idle Signup and view all the answers

What is the high idle speed?

2100 rpm Signup and view all the answers

How many feet must a load extend beyond the bed to require a red flag?

4ft Signup and view all the answers

Study Notes

LHS Army Flashcards Study Notes

GCWR (Gross Combination Weight Rating): 109,000 lbs.
HEMTT: Stands for Heavy Expanded Military Tactical Truck.
ECHU: Enhanced Containers Handling Unit for container operations.
LHS: Acronym for Loading Handling System, specifically designed for loading and unloading flatracks.
Fording Capability: LHS can ford up to 48 inches of water for a duration of 5 minutes.
Normal Operations Range: All models typically have a range of 300 miles based on a fuel capacity of 154 gallons.
PTO: Refers to Power Take Off, used to transfer engine power to another mechanism.
LHS Height: The loading height can reach up to 22 feet 2 inches.
Engine Speed: Can be increased to 1,500 RPM; red over-speed indicator triggers when above 2,450 RPM.
Fuel Indicator: The low fuel indicator light turns amber when the fuel level falls below 1/8 of the full tank.
Monthly Inspections: Chains and hooks should be inspected monthly; web tiedown straps must be checked before each use.
Inspection Focus: During chain inspections, look for burns, cuts, and tears in chain links and hooks.
Strap Tensioning: Ensure straps are tensioned to form at least 1.5 turns on the take-up spool.
Center of Gravity: For M1077 flatracks, the center of gravity is located 106 inches from the front edge.
Class 3 Items: Include petroleum, oil, and lubricants.
M1120 with M1076 Trailer: Heavy flatracks cannot be loaded on this combination.
M1120A4 vs. M1120A2: The key difference is in the cruising range.
M1120A4 Overall Length: Measures 402 inches.
ECHU Lift Frame Weight: Weighs 980 lbs.
Ring Capacities: Small ring supports 10,000 lbs; large ring supports 25,000 lbs.
Brake System Failure: Occurs when air pressure is below 70 psi, accompanied by a red indicator.
Engine Brake Settings: Three positions: High (maximum braking), Medium (less), Low (minimum braking).
Parking Brake Control: Activates when air pressure falls below 30 psi.
Hydraulic Selector Switch Positions: Includes off, auto, manual, frame, and transit options.
Trailer Bumper Point Limit: Should not exceed 0.5 inches.
Primary ECHU Mission: Facilitates loading, transporting, and unloading ISO containers using PLS and HEMTT LHS.
Transmission Oil Temperature Gauge: Indicates in Fahrenheit and Celsius; illuminates red over 482 degrees or 350 degrees for torque.
LHS Payload Limit: Will not function with payload exceeding 11 tons.
Air Filter Warning: A red light signifies restrictions; reset with the yellow button on the gauge.
LHS Nomenclature: Identified as M1120A4.
Air Charge Cooler Function: Cools intake air as well as engine, transmission oil, and hydraulic fluid.
Terrain Limit for Loading/Unloading: Slope cannot exceed 5 degrees.
PLS (Palletized Loading System): A system used for efficient loading/unloading of cargo.
Idle RPM: Standard idle speed is 1,500 RPM; low idle is at 600 RPM, and high idle is at 2,100 RPM.
Hydraulic Selector Switch Engine Requirement: Engine must be at idle for operation.
Exceeding Load Bed Limit: Loads extending beyond 4 feet require a red flag for safety.

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This quiz features essential terminology related to the LHS (Loading Handling System) used by the Army. Each flashcard includes a word and its definition, aiding in the understanding of key concepts such as GCWR and HEMTT. Perfect for military personnel and enthusiasts looking to reinforce their knowledge.

LHS Army Flashcards