JLTVA1 Book Q`s & Answers.
Why should suspension lock-out braces be used when working under the JLTVA1? correct
answers Suspension may lower, crushing personnel. Failure to comply may result in injury or
death.
What can you do to prevent slipping and falling in the shop? correct answers Maintain three
points of contact at all times.
Why is it important to adhere to the proper use of handholds when exiting/entering the
vehicle? correct answers To stop slips and falls/pinching of fingers.
What are the differences between the JLTVA1 General Purpose and the JLTVA1 Utility?
correct answers The Payload
What is the maximum range of the JLTVA1 at 35 mph at GVW? correct answers 300 miles
What speed is the JLTVA1 capable of negotiating a 40% slope? correct answers 8 MPH
What is the top speed for the JLTVA1 when the transaxle is in high range? correct answers
10 MPH
What is the purpose of glad hands? correct answers Supply air to the vehicle if towing and
the air system is operational.
Where are the air drains located and when should the operator drain the air tanks? correct
answers Rear passenger, and when vehicle operation is complete.
What solenoids are used for towing? correct answers R1, T2, T3
The NATO slave receptacle is used to jump-start the vehicle in the event of a dead battery.
What must you take into consideration when jump starting a vehicle? correct answers Ensure
the voltage on both systems are the same (24V)
Where is the battery disconnect switch located, for powering the vehicle? correct answers
Located at the bottom left of the dash.
Where are the controls for most vehicle lighting functions? correct answers Located just
above the battery disconnect switch panel.
What is the function of the blackout switch? correct answers An analog switch that will turn
off: Interal- all warning icons gauge backgrounds, and LCO illumination on the dash.
External- all external lighting and sound.
What is the function of the combat override switch? correct answers Disable low voltage
disconnect, the neutral safety interlock, disable engine de-rates, disable the suspension related
speed limitations, disable CTIS transmission gear limitations, disable all load shedding,
overrides suspension hydraulic faults that inhibit operations, enables the low-pressure fuel
pump at full pressure, provides emergency bipass for adjusting CTIS, and adjusting
, suspension ride height in the event of the DSDU failure. Ties batteries together for more
amperage.
Name the four main screens used in the DSDU? correct answers Check vehicle systems,
access vehicle info, service screen, power train selection.
What is the tie-down suspension setting used for? correct answers Tie-down is used when the
truck is transported on a flatbed or by rail.
An operator is driving the JLTVA1 and needs to monitor vehicle drive information, i.e. when
speed limiting is active and fuel and oil levels. Where can the operator find this information?
correct answers The DSDU.
What could occur if suspension lock-out braces are not installed before an operator crawls
under the truck? correct answers The operator will be crushed and be injured/dead.
What should the suspension be set to for normal operating conditions? correct answers
Operational
What must be engaged whenever the truck is in operation? correct answers Combat Lock
Why should the Operator idle the engine for 10 min at 1500-1800 RPM before shutting down
in cold weather? correct answers When shutting down, idle the engine for 10 minutes at
1500-1800 RPM. this will allow the system to stabilize and the turbocharger to cool down
appropriately.
What should the operator do if the engine is overheating in extreme heat conditions? correct
answers ENgine, continuously monitor engine coolant temperature. if the engine is
overheating, stop the truck and allow the engine to idle. this will cool all of the systems to
include the engine. the operator could use a lower gear range as necessary as this reduces
load on the engine. Transmission- just like the engine, the operator should continuously
monitor the temperature of the transmission fluid and keeping it between 125 degrees and
325 degrees for all operations.
What conditions must exist in order to allow the Silent Watch system to work? correct
answers Batteries must be at 95% capacity, the temperature must be above 32 degrees, and
the batteries must be above 24.2 VDC.
What is the maximum fording height without a fording kit? correct answers 30 in
Because forest or rocky terrain conditions can change quickly, what are some conditions the
operator should be aware of? correct answers Should be aware of sharp objects when
operating through forests or sharp rocks.
What speed is the vehicle limited to when the suspension is adjusted to fording mode? correct
answers 10 MPH
Why would an engine overheat when operating in fording mode? correct answers Engine
fans, A/C compressor, CTIS, and 120 VAC outlets shut off once fording mode is achieved.
The operator must take the vehicle out of fording mode to re-engage these components
Why should suspension lock-out braces be used when working under the JLTVA1? correct
answers Suspension may lower, crushing personnel. Failure to comply may result in injury or
death.
What can you do to prevent slipping and falling in the shop? correct answers Maintain three
points of contact at all times.
Why is it important to adhere to the proper use of handholds when exiting/entering the
vehicle? correct answers To stop slips and falls/pinching of fingers.
What are the differences between the JLTVA1 General Purpose and the JLTVA1 Utility?
correct answers The Payload
What is the maximum range of the JLTVA1 at 35 mph at GVW? correct answers 300 miles
What speed is the JLTVA1 capable of negotiating a 40% slope? correct answers 8 MPH
What is the top speed for the JLTVA1 when the transaxle is in high range? correct answers
10 MPH
What is the purpose of glad hands? correct answers Supply air to the vehicle if towing and
the air system is operational.
Where are the air drains located and when should the operator drain the air tanks? correct
answers Rear passenger, and when vehicle operation is complete.
What solenoids are used for towing? correct answers R1, T2, T3
The NATO slave receptacle is used to jump-start the vehicle in the event of a dead battery.
What must you take into consideration when jump starting a vehicle? correct answers Ensure
the voltage on both systems are the same (24V)
Where is the battery disconnect switch located, for powering the vehicle? correct answers
Located at the bottom left of the dash.
Where are the controls for most vehicle lighting functions? correct answers Located just
above the battery disconnect switch panel.
What is the function of the blackout switch? correct answers An analog switch that will turn
off: Interal- all warning icons gauge backgrounds, and LCO illumination on the dash.
External- all external lighting and sound.
What is the function of the combat override switch? correct answers Disable low voltage
disconnect, the neutral safety interlock, disable engine de-rates, disable the suspension related
speed limitations, disable CTIS transmission gear limitations, disable all load shedding,
overrides suspension hydraulic faults that inhibit operations, enables the low-pressure fuel
pump at full pressure, provides emergency bipass for adjusting CTIS, and adjusting
, suspension ride height in the event of the DSDU failure. Ties batteries together for more
amperage.
Name the four main screens used in the DSDU? correct answers Check vehicle systems,
access vehicle info, service screen, power train selection.
What is the tie-down suspension setting used for? correct answers Tie-down is used when the
truck is transported on a flatbed or by rail.
An operator is driving the JLTVA1 and needs to monitor vehicle drive information, i.e. when
speed limiting is active and fuel and oil levels. Where can the operator find this information?
correct answers The DSDU.
What could occur if suspension lock-out braces are not installed before an operator crawls
under the truck? correct answers The operator will be crushed and be injured/dead.
What should the suspension be set to for normal operating conditions? correct answers
Operational
What must be engaged whenever the truck is in operation? correct answers Combat Lock
Why should the Operator idle the engine for 10 min at 1500-1800 RPM before shutting down
in cold weather? correct answers When shutting down, idle the engine for 10 minutes at
1500-1800 RPM. this will allow the system to stabilize and the turbocharger to cool down
appropriately.
What should the operator do if the engine is overheating in extreme heat conditions? correct
answers ENgine, continuously monitor engine coolant temperature. if the engine is
overheating, stop the truck and allow the engine to idle. this will cool all of the systems to
include the engine. the operator could use a lower gear range as necessary as this reduces
load on the engine. Transmission- just like the engine, the operator should continuously
monitor the temperature of the transmission fluid and keeping it between 125 degrees and
325 degrees for all operations.
What conditions must exist in order to allow the Silent Watch system to work? correct
answers Batteries must be at 95% capacity, the temperature must be above 32 degrees, and
the batteries must be above 24.2 VDC.
What is the maximum fording height without a fording kit? correct answers 30 in
Because forest or rocky terrain conditions can change quickly, what are some conditions the
operator should be aware of? correct answers Should be aware of sharp objects when
operating through forests or sharp rocks.
What speed is the vehicle limited to when the suspension is adjusted to fording mode? correct
answers 10 MPH
Why would an engine overheat when operating in fording mode? correct answers Engine
fans, A/C compressor, CTIS, and 120 VAC outlets shut off once fording mode is achieved.
The operator must take the vehicle out of fording mode to re-engage these components
