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8.2 HYDRAULIC LIFT SYSTEM
TROUBLESHOOTING
8.3 HYDRAULIC HOSES
NOTE: When loosening or tightening any hydraulic
hoses, use the correct wrench. If hoses are to be dis-
connected or reconnected at a fitting use two
wrenches, one on the hose and one on the fitting, to
prevent damage by twisting off the fitting.
1. When disconnecting hoses, have an open top
container to drain hydraulic oil into.
2. Clean all fittings and hoses where maintenance is
to be performed, prior to removing hoses to avoid
hydraulic system contamination. Cap hoses,
fittings and hydraulic component ports.
3. Repair or replace any worn or damaged hydraulic
items.
NOTE: Refer to the hydraulic diagram, Figure 54, for
proper hydraulic hose routing.
4. Fittings which use an O-ring seal do not use a
hydraulic sealer for preventing leaks. Fittings
without an O-ring seal, should use a hydraulic
sealer. Use caution not get hydraulic sealer into
hydraulic system.
5. After any hydraulic hose maintenance, refer to
Hydraulic System Servicing and Hydraulic System
Bleeding.
Problem Probable Cause Corrective Action
Mower deck will not raise Hydraulic system low on fluid
Pinched or restricted hydraulic hose
Air in system
Hydraulic valve or valve linkage
Transmission charge pressure too low
Add oil to hydraulic system
Repair or replace
Bleed hydraulic system
Repair or replace
Adjust
Mower deck bleeds down Transmission charge pressure too low
Hydraulic valve
Hydraulic hose or fitting leak
Lift Cylinder
Adjust
Replace
Repair or replace
Repair or replace
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