JLG 80SL, Руководство по техническому обслуживанию

Страница: 83 / 162

SECTION 4 - HYDRAULICS
3121325 – JLG Lift – 4-3
NOTE: Step 3 applies only to the Axle Lockout Cylinder.
3. To prevent damage, remove the load check valve
from the barrel.
NOTE: Step 4 applies only to the Outrigger Cylinders.
4. To prevent damage, remove the safety valve and
limit switch from the top of the outrigger cylinders.
DISASSEMBLY OF THE CYLINDER SHOULD BE PERFORMED ON
A CLEAN WORK SURFACE IN A DIRT FREE WORK AREA.
5. Connect a suitable auxiliary hydraulic power source
to the cylinder port block fitting.
DO NOT FULLY EXTEND CYLINDER TO THE END OF STROKE.
RETRACT CYLINDER SLIGHTLY TO AVOID TRAPPING PRES-
SURE.
6. Operate the hydraulic power source and extend the
cylinder. Shut down and disconnect the power
source.
7. Adequately support the cylinder rod, if applicable.
8. Place the cylinder barrel into a suitable holding fix-
ture.
Cylinder
Barrel
Load Check
Valve
Figure 4-2. Load Check Valve Romoval
Outrigger
Cylinder
Safety Valve
Limit Switch
Figure 4-3. Safety Valve and Limit Switch Removal
Figure 4-4. Cylinder Barrel Support