JLG 40RTS Service Manual - Manual (Page 22)

SECTION 2 - PROCEDURES
2-6 – JLG Sizzor – 3120826
6. Carefully remove the cylinder from the Sizzor lift and
place in a suitable work area.
Lift Cylinder Installation
1. Install lift cylinder in place using suitable slings or
supports, aligning barrel end attach pin #2 mount-
ing holes on lower arm assembly.
2. Using a suitable drift, drive the barrel end attach pin
#2 through the mounting holes in the lift cylinder
and the lower arm assembly. Secure in place with
the bolts, flat washers, and lock washers.
3. Remove cylinder port plugs and hydraulic line caps
and correctly attach lines to cylinder ports.
4. Extend the cylinder rod until the attach pin #1 hole
aligns with those in the upper arm assembly. Using a
suitable drift, drive the cylinder rod attach pin #1
through the aligned holes. Secure the pin in place
with the bolts, lock washers, and flat washers.
5. Remove support from platform and position the
safety props to the stowed position.
6. Lower platform to stowed position and shut down
motor/engine. Check hydraulic fluid level and adjust
accordingly.
2.11 CYLINDER REPAIR
NOTE: The following are general procedures that apply to
all of the cylinders on this machine. Procedures that
apply to a specific cylinder will be so noted.
Disassembly
DISASSEMBLY OF THE CYLINDER SHOULD BE PERFORMED ON
A CLEAN WORK SURFACE IN A DIRT FREE WORK AREA.
1. Place the cylinder barrel into a suitable holding fix-
ture.
2. 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.
3. Operate the hydraulic power source and extend the
cylinder. Shut down and disconnect the power
source. Adequately support the cylinder rod, if appli-
cable.
CYLINDERS WITH DOUBLE HOLDING VALVES. BEFORE REMOV-
ING HOLDING VALVES CRACK BLEEDER TO RELEASE PRES-
SURE.
Figure 2-3. Bottom Lift Cylinder Pin Location
Figure 2-4. Cylinder Barrel Support