Textron JACOBSEN GP400, Technical/Repair Manual

Page: 150 / 354

5-32 4252490-Rev A
HYDROSTATIC POWER TRAIN
5
Tests and Adjustments
Neutral Adjustment
See Figures 5-15 through 5-18.
!
WARNING
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
Figure 5-15
NOTE
Perform step 2 if the machine is a 2WD configuration.
2. Install wheel restraint (1) to rear wheel.
!
WARNING
IMPORTANT
It is important to lift and support the front of the
machine, or the machine will move.
3. Lift and support the machine so that the front wheels
(2WD configuration) or all wheels (3WD
configuration) are off the ground.
4. Close the tow valve completely by turning it
clockwise.
Figure 5-16
5. Remove nut (2), and disconnect traction control
cable (3) from cam plate (4).
6. Release park brake.
7. Start engine and run at full throttle (3400 rpm ± 50).
8. Operate hydraulic system until oil temperature is
120–150° F (49–65° C).
The hydraulic system is under pressure, and the
oil will be hot.
• Always relieve pressure in the hydraulic
system before performing service.
• Failure to follow appropriate safety
precautions may result in death or serious
injury.
TN1761
1
Prevent personal injury. Use properly rated lifting
devices. Always be sure load is balanced before
lifting.
Support the machine properly using jackstands.
TN3909
2
3
4