Setting The Hydraulic Pump Neutral - Toro 74179 Operator's Manual

Setting the Hydraulic Pump
Neutral
Note: Adjust handle neutral first. That has to be correct
before the following adjustment can be made.
Danger
Mechanical or hydraulic jacks may fail to support
machine and cause a serious injury.
Use jack stand when supporting machine.
Do not use hydraulic jacks.
Warning
Engine must be running so motion control
adjustment can be performed. Contact with
moving parts or hot surfaces may cause personal
injury.
Keep hands, feet, face, clothing and other body
parts away from rotating parts, muffler and other
hot surfaces.
This adjustment must be made with drive wheels turning.
1. Raise the frame and block up the machine so drive
wheels can rotate freely.
2. Disconnect electrical connector from the seat safety
switch. Temporarily install a jumper wire across
terminals in the wiring harness connector.
3. Slide seat forward, disconnect prop rod and tilt seat
fully forward.
Setting the Left–hand Hydraulic Pump
Neutral
1. Start the engine, open throttle 1/2 way and release
parking brake. Refer to Starting and Stopping the
Engine, page 19.
Note: Motion control lever must be in neutral while
making any adjustments.
2. Adjust pump rod length by rotating the knob, in the
appropriate direction, until the wheel is still or slightly
creeping in reverse (Fig. 48).
3. Move motion control lever forward and reverse, then
back to neutral. Wheel must stop turning or slightly
creep in reverse.
4. Open throttle to fast. Make sure wheel remains stopped
or slightly creeps in reverse, adjust if necessary.
Figure 48
1. Tracking knob
2. Pump rod
Setting the Right–hand Hydraulic Pump
Neutral
1. Loosen the locknuts at the ball joints on pump control
rod (Fig. 47).
2. Start the engine, open throttle 1/2 way and release
parking brake. Refer to Starting and Stopping the
Engine, page 19.
Note: Motion control lever must be in neutral while
making any adjustments.
Note: The front nut on the pump rod has left–hand threads.
3. Adjust pump rod length by rotating double nuts on rod,
in the appropriate direction, until wheel is still or
slightly creeps in reverse (Fig. 47).
4. Move motion control lever forward and reverse, then
back to neutral. Wheel must stop turning or slightly
creep in reverse.
5. Open throttle to fast. Make sure wheel remains stopped
or slightly creeps in reverse, re-adjust if necessary.
38
1
3
2
m–6283
3. Adjustment bolt