TM 5-3805-255-14
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DRIVING THE LOADER CONTINUED
Shifting Gears
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The transmission has four forward gear ranges, four reverse gear ranges, and neutral which are manually selected
with the transmission gear range and direction levers.
"1" (1st gear) and "2" (2nd gear) are the main working ranges. "3" (3rd gear) can be used for roading over rough
terrain or roading with a loaded bucket. "4" (4th gear) is used to road the machine for longer distances at maximum
loader speeds. The direction lever N (neutral) position has a neutral start safety switch incorporated in it. The
direction lever must be in N before the engine can be started. "R" (reverse) also has "1" (1st), "2" (2nd), "3" (3rd)
and "4" (4th) gear ranges.
1. Down-Shifting. Range down-shifts (except in emergency) should never be made at a vehicle ground speed
higher than that possible in the next lower gear range. Down-shifting while in motion (especially to 1st speed
range) should be accomplished in a full engine RPM throttle condition.
2. Up-Shifting. Range up-shifts can be made at any time, or engine RPM, at which the higher gear range will
propel the vehicle efficiently. It is recommended to anticipate the engine RPM dictated by the higher gear range
and decelerate the engine accordingly.
3. Directional-Shifting.
a. Decelerate engine in all direction changes.
b. Use right brake treadle to determine stop or cycle distance.
c.
Change directional control lever position in a manner to smoothly coordinate: (a) vehicle stop, (b)
transmission reengagement, and (c) engine acceleration.
Steering
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The loader is articulated and steering is accomplished by hydraulic power which pivots the main frames at the
center hinge. Turn the steering wheel until reaching the desired angle of turn. Hydraulic power holds the angle of
turn until the steering wheel is again turned.
END OF TASK
LOADING MECHANISM OPERATION
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NOTE
Holding a control lever in any position except HOLD or FLOAT for an extended period of
time after the hydraulic cylinder rod has reached the limit of its travel will produce
excessive heat in the hydraulic system which may affect loader performance.
The hydraulic system provides power for the boom and bucket. When the bucket circuit is being operated, flow to
the boom circuit is cut off.
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