Hydraulic Leak Troubleshooting; Hydraulic Leak Troubleshooting; Miscellaneous Hydraulic Leak Troubleshooting - JLG 10VP Service And Maintenance Manual

3.10 HYDRAULIC LEAK TROUBLESHOOTING

Miscellaneous Hydraulic Leak Troubleshooting

Overview Of Procedure
This series of steps gives remedies for various areas of the machine where leaks could occur.
STEP
Oil leaking around the lift cylinder rod.
1.
2. Oil leaking around the cylinder fitting/flow valve.
Oil leaking around the hydraulic lines.
3.
Oil leaking around the lift up valve.
4.
Oil leaking around the lift down valve.
5.
6. Oil leaking around the (Red) manual descent valve.
Note: Do not overtighten the nut on the solenoid in steps 4, 5, and 6.
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Table 3-31. Hydraulic Leak Troubleshooting
ACTION
– JLG Lift –
SECTION 3 - TROUBLESHOOTING
SPEC YES
Replace the Seal
at the end of the
—
Piston and
Cylinder Barrel
Tighten or
—
Replace Fittings
Tighten or
— Replace
Hydraulic Lines
Tight Cartridge in
—
Pump Case
Tighten Cartridge
—
in Pump Case
Replace Lift
—
Down Valve
NO
—
—
—
—
—
—
3-41