Steer Cylinder - JLG 660SJ Service And Maintenance Manual

Steer Cylinder

DISASSEMBLY
NOTE: Refer to Figure 5-71.
CONTAMINATION MAY DAMAGE EQUIPMENT. DISASSEMBLE CYLINDER ON A
CLEAN WORK SURFACE IN A DIRT FREE WORK AREA.
1. Connect a suitable auxiliary hydraulic power source to
cylinder port block fitting.
DO NOT FULLY EXTEND CYLINDER TO THE END OF STROKE. RETRACT CYLINDER
SLIGHTLY TO AVOID TRAPPING PRESSURE.
2. Operate hydraulic power source and extend cylinder.
Shut down and disconnect power source. Adequately
support cylinder rod, if applicable.
3. Place cylinder barrel in a suitable holding fixture. Tap
around outside of cylinder head retainer with a suitable
hammer to break thread-locking compound.
Figure 5-68. Cylinder Barrel Support
4. Remove burrs and contamination from cylinder before
disassembly.
3121298
5. Unscrew Spanner Nut (13) with hook spanner.
Figure 5-69. Removing Spanner Nut
PULLING ROD OFF-CENTER CAN DAMAGE PISTON AND CYLINDER BARREL
SURFACES. USE EXTREME CARE WHEN REMOVING CYLINDER ROD AND PIS-
TON.
6. Clamp barrel securely. Apply pressure to rod pulling
device and carefully withdraw complete rod assembly
from cylinder barrel.
Figure 5-70. Cylinder Rod Support
– JLG Lift –
SECTION 5 - HYDRAULICS
5-33