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Published 01-14-2021 Control # 707-01
HYDRAULIC SYSTEM
TMS9000-2 SERVICE MANUAL
12.
Pressurize and cycle the cylinder with hydraulic oil
pressure. Static test the cylinder at 24,132 kPa
(3500 psi). Check for proper operation and any leakage.
Make repairs as needed.
OUTRIGGER EXTENSION CYLINDER
Description
The four extension cylinders are installed in the outrigger
beams. The cylinders are two stage, with the extend and
retract ports on the rod end. Oil from the outrigger selector
valve extends and retracts the cylinders.
A wiper ring prevents foreign material from entering each
cylinder. O-rings and other seals prevent internal and
external leakage.
The cylinder weighs approximately 70.3 kg (188.3 lb).
Maintenance
Disassembly
Upper Barrel
NOTE:
Any maintenance requiring disassembly of the
cylinders should include replacement of all seals. A
seal kit will supply the required items.
1.
Clean away all dirt from the head. Place protective
padding around the rod near the head.
2.
Using a spanner wrench, unscrew the cylinder head
from the upper barrel.
3.
Remove the upper cylinder rod assembly from the
cylinder barrel.
NOTE:
Cover the barrel opening to avoid contamination.
4.
Remove the two wear rings and 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.
5.
Loosen and remove the locknut securing the piston.
Remove the piston from the rod.
6.
Remove the O-ring from the inside of the piston.
7.
Remove the spacer from the rod.
8.
Remove the head from the rod.
9.
Remove the O-ring, backup ring and retaining ring from
the outside of the head. Remove the rod seal, wiper and
O-ring from the inside of the head.
Lower Barrel
1.
Using a spanner wrench, unscrew the cylinder head
from the lower barrel.
2.
Remove the rod assembly from the lower barrel.
NOTE:
Cover the barrel opening to avoid contamination.
3.
Remove the wear rings and seal from the outside of the
piston.
4.
Unscrew and remove the piston from the cylinder rod.
5.
Remove the O-ring from the inside of the piston.
6.
Remove the head and spacer from the rod.
7.
Remove the O-ring and backup ring from the outside of
the head and the rod seal, wiper and O-ring from the
inside of the head.
Inspection
1.
Clean all parts with solvent and dry with compressed air.
Inspect all parts for serviceability.
WARNING
Death or Injury Could Occur!
Do not use air pressure to remove the rod. Cylinder parts
could fly apart with explosive force. Use only a source of
controlled hydraulic oil pressure if the rod is hard to move.
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.
CAUTION
Damage Could Occur!
When removing seals and rings, avoid scratching the
grooved and gland surfaces.
Fo
r
Reference
Only