TM 5-3895-346-14
OPERATING CONTROLS
OPERATIONS
OPERATING CONTROLS
Operator controls (Fig. 1) have been provided for maximum flexibility of roller operation. The operator is
placed in such a position that he may see the front or rear of the machine without sacrificing hand control of
direction and speed.
Instrument Panel (1)
The engine instruments and controls are mounted on the right-hand side of the steering column.
Steering
Roller steering is the automotive hydraulic power-type with center-hinge body pivot (articulated).
Engine Throttle (2)
To be set and maintained at 2200 rpm after warm up period.
Engine Tachometer (3)
Indicates engine speed setting.
Parking Brake (4)
The parking brake is operated by a lever attached to the platform on the left side of the operator. Brake band
adjustment is obtained by rotating knurled knob on the top of the lever.
Forward-Reverse and Roller Speed Control (5)
The forward-reverse and roller speed control are combined into one lever located on top of the console located
to the left of the operators position. Movement of this lever from neutral position causes the hydrostatic
transmission to drive the roller either forward or reverse, depending on the direction in which the lever is
moved.
Continued movement of the control lever increases travel speed in the direction selected.
CAUTION
During engine and hydraulic system warmup, leave control lever in neutral
position.
Gear Range Lever (6)
The gear range lever located on the side of the console provides three ranges with a neutral position between
each range. Detents provide a positive location for each range and neutral. The compaction gear position is
slightly above the horizontal and the highgear position is vertical, with the travel gear position equally spaced
between the compaction and high-gear range.
Brake Pedal (7)
Hydraulic wheel brakes are provided for use in the event of an emergency only.
To stop roller, slowly move forward- reverse lever to neutral. The hydrostatic drive will provide all the braking
needed for the normal operation of the roller.
Vibrator Frequency Control Lever (8)
The vibratory control lever is fastened to the left side of the steering console. Moving the lever down increases
vibrator frequency for moving to the left. With respect to the position of the operator, the lever should move up
for travel to the right.
Centering the levers (detent position) stops the vibrators. Screwing the lever handle in or out will adjust the
vibratory frequency. (Out increases frequency.) These controls must be shut off before stopping roller or when
roading.
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