Motion Control Adjustment

a)This adjustment must be made with the drive wheels turning. First raise the frame and block up so that drive wheels can rotate freely.

b)Remove the electrical connection from the seat safety switch, located directly to the left of the seat switch assembly beside the hydraulic oil reservoir.

Temporarily install a jumper wire across the terminals in the connector of the wiring harness.

c)Run the unit at least 5 minutes with the drive levers at full forward speed to bring hydraulic system oil up to operating temperature.

d)Unhook seat latch and tilt seat forward.

e)Loosen lock nuts from the ball joints at each end of the LH pump control linkage. (See Figure 17).

NOTE: The nut to the front of the unit on the LH rod has left-hand threads.

FIGURE 17

f)Start engine. Brake must be engaged and motion control levers out to start engine. Operator does not have to be in the seat because of the jumper wire being used. Run engine at full throttle and release brake.

g)The reverse indicator spring must be correct before the following adjustments can be made. See Section 5.2.12.

NOTE: The motion control lever needs to be in neutral while making any necessary adjustments.

The left rod assembly controls the left wheel and the right rod assembly controls the right wheel.

h)Bring the LH motion control lever into the neutral position. Adjust LH pump control rod length by rotating the double nuts on the rod in the appropriate direction until the wheels slightly creep in reverse. (See Figure 17) Move the motion control lever to the reverse position and while applying slight pressure to the lever allow the reverse indicator spring to bring the levers back to neutral. The wheel must stop turning or slightly creep in reverse. When adjustment is complete, tighten lock nuts onto ball joints.

i)Bring the RH motion control lever into the neutral position. Adjust the RH pump control rod length by rotating the tracking adjustment knob in the appropriate direction until the wheels slightly creep in reverse. Move the motion control lever to the reverse position and while applying slight pressure to the lever allow the reverse indicator spring to bring the levers back to neutral. The wheel must stop turning or slightly creep in reverse. See Figure 17.

j)Shut off unit. Remove jumper wire from wire harness connector and plug connector into seat switch.

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