Lift Cylinder; Removal; Disassembly; Cleaning And Inspection - Upright X Series Service & Parts Manual

4.12 Lift Cylinder (Figure 4-16)
The X20N, X20W aand X26N are all equiped
with one Lift Cylinder. The X31N has two Lift
Cylinders (Figure 4-17). The procedure for
removing the lift cylinder(s) is the same for all
models.
Use a suitable maintence stand to access the
upper Lift Cylinder on the X31N. DO NOT
stand on the Elevating Assembly

REMOVAL

1. Elevate platform and install brace (see page 4-3).
2. Provide a suitable container to catch the hydraulic
fluid, then disconnect the hydraulic hoses from the
cylinder. Immediately plug hoses and fittings to pre-
vent foreign material from entering.
3. Remove Emergency Lowering Valve Cable and
Down Valve wires from the Emergency Lowering/
Down Valve.
4. Remove retaining rings securing Lift Cylinder Pivot
1
4
X20
2
2

1. Lift Cylinder

2. Pivot Pin
3. Retaining Ring
4. Locking Pin
3
5. Roll Pin
6. Washer
Figure 4-16: Lift Cylinder Installation
X-Series Work Platform
Maintenance
3
2
X26N
6
1
5
4

1. Lift Cylinder

2. Pivot Pin
3. Retaining Ring
4. Roll Pin
1
3
2
4
3
1
2
4
Figure 4-17: X31N Lift Cylinders
Pins. On X26N machines remove the left roll pin in the
Upper Pivot Pin.
5. Remove lower Pivot Pin by driving pin towards
Locking Pin side. Lower cylinder to rest on chassis.
6. Attach a suitable hoisting device and sling to the
cylinder and remove upper Pivot Pin.
7. Carefully remove cylinder.

DISASSEMBLY

1. Remove the fittings and Down Valve from the
cylinder assembly.
2. Unscrew the headcap and withdraw the rod and
piston assembly from the barrel tube.
3. Unscrew the piston from the rod and then remove
the head cap from the cylinder rod.
4. Remove all o-rings, seals and wipers from the head
cap, piston and rod.

CLEANING AND INSPECTION

1. Clean all metal parts in solvent and blow dry with
filtered compressed air.
2. Check all threaded parts for stripped or damaged
threads.
Section
4.12
4-15