Procedure for Steering Cylinder Internal Leakage
Test
5. Place a drain pan under the steering cylinder. Re-
movehydraulichosefromthefittingontherodendofthe
steering cylinder. Install a steel plug in the disconnected
hose.
NOTE: Steering circuit operation will be affected by
rear tire pressure, binding of steering cylinder, extra
weightonthevehicleand/orbindingofrearaxlesteering
components. Make sure that these items are checked
before proceeding with steering cylinder internal leak-
age test.
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 for a right
1.
Make sure hydraulic oil is at normal operating tem-
turn. 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 steer-
ing cylinder has internal leakage and must be repaired
(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.
perature by operating the machine under load for
approximately ten (10) minutes. Make sure the hydrau-
lic tank is full.
2.
decks lowered and off. Make sure engine is off and the
parking brake is applied.
Park machine on a level surface with the cutting
8.
draulic hose. Connect hose to the steering cylinder fit-
ting.
After testing is completed, remove plug from the hy-
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.
9. If a steering 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).
3.
steering cylinder rod is fully extended.
Turn the steering wheel for a right turn so that the
10.Check
needed.
oil level in hydraulic reservoir and adjust if
4.
at the rod end of the steering cylinder.
Thoroughlycleantheareaaroundthehydraulichose
Groundsmaster 4000--D/4010--D
Page 4 -- 63
Hydraulic System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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