JLG X23J - X700AJ Service Manual - Manual (Page 434)

SECTION 5 - HYDRAULICS
5-8 – JLG Lift – 3121448
EQUIPMENT AND PRODUCT LIST
• Spanner wrancher
Figure 5-5.
NOTE: The following are general procedures that apply to all of
the cylinders with sensor. Procedures that apply to a spe-
cific cylinder will be so noted.
CYLINDER WITH SENSOR
Disassembly
General Cylinder Disassembly
Figure 5-6.
1. Clean the cylinder with a suitable cleaner before dis-
assembly. Remove all dirt, debris and grease from
the cylinder.
2. Clamp the barrel end of the cylinder in a soft-jawed
vise or other acceptable holding equipment if possi-
ble.
AVOID USING EXCESSIVE FORCE WHEN CLAMPING THE CYLIN-
DER IN A VISE. APPLY ONLY ENOUGH FORCE TO HOLD THE CYL-
INDER SECURELY. EXCESSIVE FORCE CAN DAMAGE THE
CYLINDER TUBE.
3. Remove the counterbalance valve from the side of
the cylinder barrel.
CYLINDER ARE IN PRESSURE.
DO NOT TAMPER WITH OR ATTEMPT TO ADJUST THE COUNTER-
BALANCE VALVE CARTRIDGE. IF ADJUSTMENT IS NECESSARY,
REPLACE THE COUNTERBALANCE VALVE WITH A NEW PART.
Partially extend the rod ~ 15mm and unscrew the head
about ~ 15mm.
Figure 5-7.
Remove 4 screws of the sensor
Figure 5-8.
Unhook the connector from the base making pressure on
2 wing signed in the picture.
Figure 5-9.