Upright SB60 Service & Parts Manual page 36

Section
3.15
3.15 Steering Cylinder
R E M O V A L
1. Mark and disconnect hoses and immediately cap
the openings to prevent contamination.
2. Remove hardware which secures steering arms to
rod ends.
3. Remove hardware which secures steering cylinder
to the chassis. Remove steering cylinder.
DISASSEMBLY
Note: Provide a clean work area for this operation,
and observe clean assembly practices. Seals and
hydraulic cylinder components are highly sensitive to
contamination that may not be visible to the naked
eye.
1. Mark heads for position on cylinder. Unscrew heads
from cylinder.
IMPORTANT: Heads must be installed onto same
end of cylinder as they were removed from.
2. Carefully pull rod assembly from cylinder.
3. Remove seal kit components (wipers, rod seals, o-
rings and backup rings) from heads and piston.
4. Thoroughly clean all parts with solvent. Rinse the
inside of the tube and allow to drain. A high pres-
sure rinse and wipe with a lint free rag is preferable.
5. Inspect cylinder parts for scratches, pits, or polish-
ing. Check seal groves and sealing surfaces.
Scratches or pits deep enough to catch the fingernail
are unacceptable, replace the cylinder. Polishing is
a sign of uneven loading. When this occurs, the
surface should be checked for roundness. Cylinders
not round within .007" should be replaced.
ASSEMBLY
NOTE: Torque all hardware to torques listed on page
3-29 unless otherwise specified.
1. Lubricate all components and seals with clean
hydraulic oil prior to assembly.
Note: To avoid cutting the seals, do not use sharp
edged tools during seal replacement. After install-
ing seals allow at least one hour for the seals to
elastically restore to their original shape before
assembling cylinder.
3-22
Maintenance
2. Install new seal kit items to piston and heads.
3. Lubricate seals on piston.
4. Carefully slide rod assembly into cylinder.
5. Thread heads into cylinder.
IMPORTANT: Heads must be installed onto same
end of cylinder as they were removed from.
INSTALLATION
1. Follow steps from "REMOVAL" section in reverse
order to install cylinder.
2. Slowly steering cylinder several times. Check hy-
draulic connections for leaks. Check for proper
cylinder operation.
Seal kit (100557-010) includes:
1. O-Ring
2. Wiper
3. Seal
4. Wear ring
5. Back up
6. O-Ring
7. Wear Ring
8. Seal
A. Rod
B. Head
C. Spacer
D. Cylinder
Figure 3-21: Steering Cylinder
SB60 Work Platform
3.15