User Manual

4 — CYLINDER REPLACEMENT
27
OUTRIGGER CYLINDER REPLACEMENT
Use the following procedure to remove and replace
faulty or damaged hydraulic cylinders on the
outriggers:
 Lower the outrigger until the footpad is touching the
ground. Do not transfer the weight of the boom lift
onto the outrigger. Leave the weight of the boom on
the trailer wheels.
 Remove the bolts securing the outrigger cylinder rod
guard (Figure 4-2). Remove the guard.
 At the piston rod end of the cylinder, unbolt and
remove the retainer plate from each side of the pivot
pin.
 Place a block of wood shoring between the outrigger
beam and cylinder.
 Remove the pivot pin using a hammer and a brass or
hardwood drift.
 Fully retract the cylinder.
 Turn key to the off position and remove the key.
 Tag and number all hydraulic hoses that attach to the
cylinder valve block. Use a marker to label the valve
block ports with the appropriate hose numbers.
 Unplug the cylinder valve solenoid.
 Place absorbent cloths below the cylinder ports and
detach hydraulic hoses from the cylinder. Elevate
hoses to prevent leakage. Plug or cap exposed hose
fittings and cylinder ports.
 At the base of the cylinder, unbolt and remove
retainer plate from each side of the pivot pin.
 Remove the pivot pin using a hammer and a brass or
hardwood drift.
 Lift and remove the cylinder using an overhead hoist
and lifting straps.
 Replace or reinstall the cylinder by following the
above instructions in the reverse order of removal.
 Actuate the hydraulic system and check for leakage.
Tighten hydraulic fittings as needed.
 Bleed trapped air from the hydraulic system by raising
and lowering the boom with the reservoir fill port cap
on but not tightened. Allow several minutes for
trapped air to escape. Repeat as needed.
CYLINDER
CYLINDER ROD
GUARD
PIN
CYLINDER ROD
GUARD BOLTS
RETAINING
PLATES
Figure 4-2. Outrigger Cylinder Replacement