Haulotte Group 3522A, Operator'S Maintenance Manual

Page: 71 / 142

HAULOTTE GROUP 5 CYLINDER REPLACEMENT
71
PRIMARY
LIFT CYLINDER
TURNTABLE
VALVE
"PUSH"
BUTTON
LIFT CYLINDER
SECONDARY
KNUCKLE
VALVE
"PUSH"
BUTTON
VALVE
"PUSH"
BUTTON
JIB
LIFT CYLINDER
PISTON
END
RETAINER
PIN
PIN
CYLINDER
BASE
END
LIFT CYLINDER REPLACEMENT
3522A / HTA 13 P Aerial Work Platforms have three (3) lift cylinders, use the following procedure to
remove and replace faulty or damaged hydraulic cylinders.
Refer to Figure 5–3 for the location of these cylinders.
Figure 5-3. Location of Manual Lowering Valves

Press (push) in and hold the emergency lowering
valve “button” on the lift cylinder to relieve all
hydraulic pressure to the cylinder.
Refer to Figure 5-4.

Turn the key switch at the ground (lower) control
panel, to the “
OFF
”
position and remove the key.

Locate the piston rod end of the cylinder to be
removed. Unbolt and remove the pin retainer from
each side of the pivot pin. Refer to Figure 5-5.
Figure 5-4. Push “Button” Lowering Valve
Figure 5-5. Lift Cylinder Replacement
Push
Button