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Groundsmaster 5900/5910 Hydraulic SystemPage 4 -- 57
Procedure for Steering Cylinder Internal Leakage
Test
1. Make sure hydraulic oil is at normal operating tem-
perature.
2. Park machine on a level surface with the cutting
decks lowered and off. Make sure engine is off and the
parking brake is applied.
CAUTION
Prevent personal injury and/or damage to equip-
ment. Read all WARNINGS, CAUTIONS and Pre-
cautions for Hydraulic Testing at the beginning
of this section.
3. Turn the steering wheel so the steering cylinder rod
of the cylinder to be tested is fully extended.
4. Thoroughlyclean the area aroundthehydraulichose
at the rod end of the steering cylinder to be tested.
5. Place a drain pan under the steering cylinder. R e-
move hydraulic hose from the fitting on the rod end of the
steering cylinder to be tested. Install a steel plug in the
disconnected hose.
6. Remove all hydraulic oil from drain pan. Make sure
that empty drain pan remains under the open fitting of
the steering cylinder.
7. With the engine off, turn the steering wheel in the
same direction needed to extend the cylinder. Observe
the open fitting on the extended steering cylinder as the
steering wheel is turned. If oil comes out of the fitting
while turning the steering wheel, the steering cylinder
has internal leakage and must be repaired or replaced
(see Steering Cylinder and Steering Cylinder Service in
the Service and Repairs section of this chapter). Check
drain pan for any evidence of oil that would indicate cyl-
inder leakage.
8. After testing is completed, remove plug from the hy-
draulic hose. Connect hose to the steering cylinder fit-
ting.
9. If a s teering problem exists and the steering cylinder
tested acceptably, the steering control valve requires
service (see Steering Control Valve and Steering Con-
trol Valve Service in the Service and Repairs section of
this chapter).
10.Check oil level in hydraulic reservoir and adjust if
needed.
Hydraulic
System