TM 9-2320-269-10
DRIVING - CONTINUED
HIGHWAY DRIVING - CONTINUED
3.
Drive 2-4 should be selected for moderate grades and over-the-road operations with restrictive speeds.
HILL DRIVING
1.
The use of the proper transmission drive range can minimize loading the engine when ascending long and steep
grades.
2.
Drive 2-3 range should be selected when you determine, as you approach the grade, that with accelerator fully
depressed, as the truck moves onto and up the grade there will be enough power to maintain a satisfactory road
speed, by remaining in that gear for the entire grade.
3.
Drive 1 range should be selected when there is a need for a low-gear hold condition, such as ascending long
steep grades, descending long steep grades where the need for engine braking is required, or for operation in
rough or soft terrain.
TA 222571
2-75
