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Grove
Published 01-14-2021 Control # 707-01
2-39
TMS9000-2 SERVICE MANUAL
HYDRAULIC SYSTEM
2
10.
Remove the O-ring and backup ring from the outside of
the head. Remove the wear rings, buffer seal, rod seal
and wiper ring from the inside of the head.
Inspection
1.
Inspect the rod. There should be no scratches or pits
deep enough to catch the fingernail. Pits that go to the
base metal are unacceptable. Chrome should be
present over the entire surface of the rod. If lack of
chrome on rod, the rod should be replaced.
2.
Inspect rod for straightness. Determine if it can be
straightened or must be replaced.
3.
Inspect the head. Visually inspect the inside bore for
scratching or polishing. Deep scratches are
unacceptable. Polishing indicates uneven loading, and
the bore should be checked for out-of-roundness.
4.
Inspect the piston. Visually inspect the outside surface
for scratches or polishing, Deep scratches are
unacceptable. Polishing indicates uneven loading, and
the diameter should be checked for out-of roundness.
5.
Inspect the barrel carefully for scoring. If barrel is
scored, it must be repaired or replaced.
6.
Thoroughly rinse parts, allow to drain, and wipe with a
lint-free rag. Inspect all parts for serviceability.
7.
Stone out minor blemishes and polish with a fine crocus
cloth.
8.
Clean with solvent and dry with compressed air any
parts that have been stoned and polished.
Assembly
NOTE:
Lubricate seals and rings with clean hydraulic oil.
R e f e r t o h e a d ( F i g u r e 2 -2 2 ) a n d p i s t o n
(Figure 2-23) seal installation illustrations when
installing the seals.
CAUTION
Damage Could Occur!
Before installing new seals and rings, clean all surfaces
and carefully remove burrs and nicks. Parts displaying
excessive wear or damage should be replaced.
CAUTION
Damage Could Occur!
When installing new seals and rings, avoid stretching
seals or scratching the grooved or gland surfaces. Make
sure parts are clean before and during assembly. Make
sure seals and rings are installed in the proper order.
Improper installation of seals could cause faulty cylinder
operation.
9262-1
1
2
3
4
5
6
FIGURE 2-22
3
7
Fo
r
Reference
Only