Cylinders Section 3 - Service & Repair
Page 3-16 503727-002
S
TEERING
C
YLINDER
R
EMOVAL
Figure 3-11: Steering Cylinder Remove & Replace
1. Mark and disconnect the hose assemblies from
the cylinder fittings and immediately cap the
openings to prevent foreign material from enter-
ing.
2. Remove the cotter pins from the pivot pins.
3. Remove the pivot pins while supporting the cyl-
inder. Remove the cylinder.
R
EPAIR
Disassembly
1. Unscrew the head cap from the barrel, remov-
ing the head cap, piston, and shaft assembly
from the barrel tube.
2. Unscrew the piston.
3. Remove all rod wipers, U-cups, O-rings, and
backup rings from the headcap, and discard.
4. Remove the piston ring and 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 cylinder barrel for scoring or excessive wear.
4. Check the piston and headcaps for scoring or excessive wear.
5. Inspect the surface of the shaft for scoring or excessive wear.
Assembly
1. Lubricate and install new rod wiper, U-cup, O-ring, and backup ring on the headcaps.
2. Install the headcap onto the shaft.
3. Install the new piston rings and O-ring on the piston. Re-install the piston.
4. Lubricate the piston seal with clean hydraulic fluid and install the shaft assembly in the cylinder bar-
rel.
Install the head cap into the cylinder barrel, and tighten the head caps.
INSTALLATION
1. Position the cylinder assembly in the chassis and insert pivot pins and secure with new cotter pins.
2. Connect the hose assemblies to the fittings.
3. Operate the steering circuit several times throughout its entire range of travel to expel trapped air and
check for leaks.
4
1
2
3
5
1. Steering Cylinder
2. Steering Link
3. Pivot Pin
4. Bushing
5. Wheel Yoke
CYLINDER BODY
CYLINDER ROD
WIPER
RETAINING RING
PLAIN BUSHING
FLANGED BUSHING
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