Haulotte Group 3522A, Operator'S Maintenance Manual

Page: 73 / 142

HAULOTTE GROUP 5 CYLINDER REPLACEMENT
73
PIN
CYLINDER
GUARD
CYLINDER
PIN
RETAINER
PISTON END
BOLT
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
aerial work platform onto the outrigger. Leave the weight of the aerial work platform on the trailer
wheels.

Remove the bolts securing the outrigger cylinder guard. Remove the cylinder guard.
Refer to Figure 5-6.
Figure 5-6. Outrigger Cylinder Replacement

At the piston rod end of the cylinder, unbolt and remove the pin retainer from each side of the
pivot pin.

Place a block of wood shoring between the outrigger tube and the cylinder.

Remove the pivot pin using a hammer and a
brass or hardwood drift.

Fully retract the cylinder.

Turn the key at the ground (lower) control station
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.

Remove the valve solenoid by unscrewing the
cap, sliding the coil off, then unscrewing the
valve.
Refer to Figure 5-7.

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.
Figure 5-7. Cylinder Valve Removal