STEERING
673831-Rev A 7-5
7
Steering Relief Valve Pressure Test
See Figures 7-4 through 7-6.
Before performing this test, perform field test procedures.
(See “Field Test Procedures” on page 6-23.)
1. Operate hydraulic system until oil temperature is
120–150° F (49–65° C).
2. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
Figure 7-4
3. Disconnect hose (2) from fitting (1).
4. Assemble test tee fitting to fitting (1).
5. Secure hose (2) to test tee fitting.
Figure 7-5
6. Connect test hose and pressure gauge (3) to test tee
fitting.
7. Bypass seat switch and engage park brake (park
brake switch in the on position).
Figure 7-6: Steering Relief Valve Pressure Test
Verify engine rpm is within specification (3000 rpm ± 50)
to ensure accurate hydraulic test results.
8. Start engine and run at full throttle (3000 rpm ± 50).
9. Turn the steering wheel fully right against stop.
10. Record pressure reading.
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
• Pressure Gauge 4000 psi (276 bar)
• -6 ORFS Test Hose 4000 psi (276 bar)
• -6 ORFS Tee Fitting
Do not run lift/steering relief valve over relief
longer than 10 seconds, or damage may occur to
hydraulic system components.
To Next Page
Loading...
Need help?
General
