HYDRAULICS
673831-Rev A 6-25
6
Steering Leakage Test
See Figures 6-14 or 6-15.
1. Operate hydraulic system until oil temperature is at
120–150° F (49–65° C).
2. Turn steering wheel fully left against stop.
3. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
Figure 6-14: 3WD Option Steering Cylinder
Figure 6-15: 4WD Option Steering Cylinder
4. Disconnect hose (1) from steering cylinder fitting.
Plug hose.
5. Position a suitable container under steering cylinder
fitting.
6. With engine off, turn steering wheel fully left against
stop.
7. Check for oil leakage in the drain pan.
Is steering cylinder leakage a nominal amount of
oil or less?
YES Go to step 8.
NO Cylinder is bypassing oil. Repair or replace
steering cylinder. (See “3WD Option
Steering Cylinder” on page 7-18.) or (See
“4WD Option Steering Cylinder” on
page 7-21.)
8. Disconnect and plug hose (2).
9. Start the engine and set engine speed to full throttle
(3000 ± 50 rpm).
10. Turn the steering wheel fully left, then fully right.
Does the steering wheel continue to turn past
stop with little or no resistance?
YES Steering unit is faulty; replace steering unit.
(See “Steering Unit” on page 7-11.)
NO Steering unit is good. Test complete.
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.
Do not turn steering wheel to the right.
Failure to follow appropriate safety precautions
may result in death or serious injury.
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