Textron Jacobsen HR-5111, Technical/Repair Manual, Page: 204 / 423

5-40 4203780 First Edition
HYDROSTATIC POWER TRAIN
5
Traction Pump Tests
See Figures 5-33 through 5-35.
!
WARNING
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
2. Before performing this test, perform traction system
test leaving flow meter, flow lock tool, and wheel
restraints connected/installed as outlined. (See
“Traction System Test” on page 5-37.)
Figure 5-33
3. Install blocking disks at locations (1 and 3).
4. Open flow meter valve (2) completely before starting
engine.
5. Set park brake.
6. Bypass the seat switch.
Figure 5-34: Traction Pump Test—Blocking Disks
Between Flow Meter and Front Axle Motor, All
Wheels Restrained
NOTE
Verify engine rpm is within specification (2800 rpm ± 50)
to ensure accurate hydraulic test results.
7. Start engine, release park brake, and run at full
throttle (2800 rpm ± 50).
Figure 5-35
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.
Required Tools and Materials
• Flow Meter
• -12 ORFS Test Hose 4000 psi (276 bar)
• -12 ORFS Blocking Disks
• Flow Lock Tool
5
TN1357
4
2
1
3
TN2090
6
TN1364