6-42 673831-Rev A
HYDRAULICS
6
21. Calculate left rear reel motor leakage.
(Step 10 – Step 19 / Step 10 x 100 = Leak
Percentage)
Is left rear reel motor leakage 10% or less?
YES The left rear reel motor is good. Proceed to
step 22.
NO Proceed to next question.
Is left rear reel motor leakage 11% to 20%?
YES The left rear reel motor is marginal.
Additional testing is required. Proceed to
step 22.
NO Proceed to next question.
Is left rear reel motor leakage 21% or more?
YES Repair or replace left rear reel motor. See
“Reel Drive Motor” on page 8-24, then
proceed to step 22.
22. Remove blocking device or tool from left rear cutting
unit.
23. Disconnect and remove test equipment. Install all
hoses, lines, and fittings as noted prior to removal.
24. Install and connect all components as noted prior to
test.
25. Check hydraulic oil level. Add oil as needed. (Refer to
“Parts and Maintenance Manual” for correct oil
specifications.)
26. Start engine. Check hydraulic system for leaks.
Repair as necessary.
Lift/Steering Relief Valve Pressure
Test
See Figures 6-42 through 6-44.
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 6-42
3. Disconnect hose (2) from fitting (1).
4. Assemble test tee fitting to fitting (1).
5. Secure hose (2) to test tee fitting.
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
To Next Page
Loading...
Need help?
General
