Snorkel UL40 - Page 48

Page 3 - 14 UL25/UL32/UL40
mast assembly. Replace the nuts on the tie rod ends temporarily to prevent this.
4. Remove the hydraulic line from the cylinder tting and cap the cylinder tting to prevent contami-
nants from entering the cylinder.
!
C A U T I O N
!
Marring the surface of the cylinder rod will dam-
age cylinder seals and cause leakages. Use a strap
wrench to prevent rod damage.
5. Extend the cylinder rod at least 12 inches by hand. Apply heat to rod near end cap to loosen
loctite.
!
W A R N I N G
!
Wear safety glasses and heat resistant gloves when op-
erating torch. Do not touch hot surfaces without proper
protection.
6. Using a strap wrench - 062482-000 to secure the cylinder rod, unscrew the cylinder rod end. If
necessary, thread a 9/16 x 18 bolt into end cap port to use as a lever. Remove rod end cap and
orice/bleeder tube assembly.
7. Remove the seal retainer, using the spanner wrench - 062521-010.
8. Clean all sealing surfaces with a solvent. Inspect the cylinder rod for excessive wear. Replace if
necessary.
9. Remove all seals from seal retainer, rod end cap and discard.
NOTE: Apply clean hydraulic uid to new cylinder seal, threads and all sliding surfaces prior
to assembly. If necessary, soften new seals with warm water 82°C (180° F) to aid in installa-
tion.
10. Twist the pressure seal into a ‘C’ shape and snap into a seal groove in seal retainer making sure
the lip of the seal is facing inward.
11. Using the same method, install the rod wiper into the seal retainer outer groove, making sure that
the blade of the seal is facing outward from the seal retainer.
12. Replace static seals in rod end cap and seal retainer by stretching them into place. Be careful
not to cut the seal during installation.
13. Install the seal retainer unto the rod using a sharp blow from a hard rubber mallet to overcome
seal squeeze. Slide the seal retainer into place and tighten using the spanner wrench.
1
2
3
A
B
C
D
4
Seal Profiles
SERVICE AND REPAIR
Figure 3-8: Lift Cylinder.
Seal Kit
1 Rod end cap A Static seal #1
2 Seal retainer B Rod wiper
3 Cylinder rod C Pressure seal
4 Cylinder body D Static seal #2