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Grove
Published 01-14-2021 Control # 707-01
2-33
TMS9000-2 SERVICE MANUAL
HYDRAULIC SYSTEM
2
6.
Rapidly pull the rod against the head to free it. Remove
rod and attached parts from the barrel. Place the rod on
a surface that will not damage the chrome or allow the
rod assembly to drop.
NOTE:
Cover the barrel opening to avoid contamination.
1.
Remove the seal from the outside of the piston.
NOTE:
Arranging discarded seals and rings in the order of
disassembly will aid in installation of new seals and
rings. Pay attention to how each seal and ring is
installed to avoid installing replacement seals and
rings improperly.
2.
Loosen and remove the nut securing the piston.
Remove the piston from the rod.
3.
Remove the O-ring from the inside of the piston.
4.
Remove the head from the rod. Remove the O-ring and
backup ring from the outside of the head.
5.
Remove the wiper ring and the rod seal from the inside
of the head.
Inspection
1.
Clean all parts with solvent and dry with compressed air.
Inspect for damaged or worn parts and replace as
required.
2.
Stone out minor blemishes and polish with fine crocus
cloth.
3.
Clean all with solvent and dry with compressed air any
parts that have been stoned and polished.
4.
Inspect the barrel carefully for scoring. If barrel is
scored, it must be repaired or replaced.
5.
Check rod’s piston area for damage. If it is damaged,
determine if it can be repaired or must be replaced.
6.
Inspect rod for straightness. Determine if it can be
straightened or must be replaced.
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.
1.
Install the replacement wiper ring into the head.
2.
Install the rod seal in the inside of the head. Make sure
the lips of the seal face the piston.
3.
Install the O-ring and backup ring onto the outside of the
head.
4.
Install the O-ring in the inside of the piston.
5.
Lubricate the rod with clean hydraulic oil.
6.
Slide the head, larger OD end first, onto the rod.
7.
Install the piston onto the rod. Secure the piston with the
nut. Lubricate the threads and torque the nut to 176
±
7
N-m (130
±
5 lb-ft).
8.
Install the seal on the outside of the piston.
9.
Lubricate all parts freely with clean hydraulic oil.
10.
Remove the cover from the barrel. Insert the rod and
attached parts into the barrel with a slight twisting
motion.
11.
Push the head into the barrel. Torque the head 27.1 Nm
(20 lb-ft)
CAUTION
Damage Could Occur!
When removing seals and rings, avoid scratching the
grooved and gland surfaces.
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!
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!
Exercise extreme care when handling or setting down the
rod. Damage to the rod surface may cause unnecessary
maintenance and expense. Also, take care to avoid
damaging grooved or gland surfaces or rings or seals
during rod insertion.
CAUTION
Damage Could Occur!
Do not use air pressure to cycle the cylinder. Use only
controlled hydraulic pressure.
Fo
r
Reference
Only
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