Removal; Assembly And Installation; Disassembly - Upright SL30SL Service & Parts Manual

3.12 A C
XLE YLINDER

Removal

Be sure platform is fully down and that machine is on
level ground.
1. Remove and cap the hoses.
2. Unscrew both cylinder retaining bolts noting the
position of the washers. Remove the bolts from
the cylinder and mounts.
3. Lift the cylinder from the mounts.
Installation
1. Completely fill both ends of cylinder with hydrau-
lic oil.
a. Lay the cylinder on its' side on a level table with
the pilot operated check valves up.
b. Remove the pilot operated check valves from
the ports.
c. Pour hydraulic oil into the cylinder through the
pilot operated check valve ports.
d. The opening to the cylinder is small. Be careful
to ensure all air is removed and the cylinder is
full of oil.
e. Reinstall the pilot operated check valves.
2. Attach both ends of the cylinder to mounts with
cylinder retaining bolts.
3. Torque the retaining bolts to 203 Nm (150 ft. lbs.).
4. Operate the work platform over rough terrain and
check for proper function and leaks.
SL26/30SL Work Platform
M
AINTENANCE
3.13 S C
TEERING YLINDER
Removal
1. Mark and disconnect the hose assemblies from
the fittings and immediately cap the openings to
prevent foreign material from entering.
2. Remove the capscrews securing the rod ends to
the steering linkage.
3. Loosen the nut and bolt in front of the Steering
Cylinder that goes through the frame.
4. Remove the capscrews and locknuts that fasten
the cylinder assembly to the chassis.
5. Remove the cylinder from the chassis.

Disassembly

1. Remove the fittings from both ends of the cylin-
der.
2. Remove the headcaps from the barrel tube, being
sure to mark which end of the barrel tube the
headcap was removed from.
3. Withdraw the entire shaft assembly from either
end of the barrel tube.
4. Remove the rod wipers, rod seals and static O-
rings from the headcaps.
5. Discard all the seals.
6. Unscrew the No. 1 shaft from the No. 2 shaft and
remove the piston.
7. Remove the piston seal and static O-ring from the
piston and discard.
Cleaning and Inspection
1. Wash all the metal parts in cleaning solvent and
blow dry with filtered compressed air.
2. Inspect all the threaded components for stripped
or damaged threads.
3. Check the inside surface of the barrel tube for
scoring or excessive wear.
4. Check the piston and head caps for scoring or
excessive wear.
5. Inspect the surface of both shafts for scoring or
excessive wear.

Assembly and Installation

1. Install a new piston seal and static O-rings.
2. Install the piston on the No. 1 shaft.
3. Thread the No. 2 shaft onto the No. 1 shaft and
tighten securely.
4. Lubricate the piston seal with clean hydraulic fluid
and install the shaft assembly in the barrel tube.
Section
3.12
(F 3-17)
IGURE
3-15