Grove Published 11-22-2016, Control # 345-12 2-91
RT9130E-2 SERVICE MANUAL HYDRAULIC SYSTEM
11. Remove the cover from the barrel. Insert the rod and
attached parts into the barrel with a slight twisting
motion.
12. Clean all oil from the threads of the head. Coat the
threads with an anti-seize compound (Never-Seez paste
lubricant or similar lubricant). Using a chain wrench,
screw the head into place on the barrel so its larger OD
end is flush with the end of the barrel.
13. Check the inside of the port block for any sharp edges or
burrs and remove as necessary with emery cloth.
14. Install new O-rings onto the check valve.
15. Lubricate the check valve and O-rings with clean
hydraulic oil.
NOTE: The check valve should turn by hand until
compression of the O-rings begins.
16. Carefully install the check valve into the port block until
fully seated.
17. Pressurize and cycle the cylinder with hydraulic oil
pressure. Test the cylinder at 5250 psi (3620 kPa).
Check for proper operation and any leakage. Make
repairs as needed.
TILT CYLINDER
Description
The tilt cylinder Figure 2-56 installed beneath the cab has a
2.5 in (6.3 cm) diameter bores.
The cylinder has a retracted length of 20.94 in (53.1 cm) and
an extended length of 29.19 in (74.1 cm) from bushing center
to bushing center. Each cylinder has a stroke of 8.25 in (20.9
cm).
A wiper ring prevents foreign material from entering each
cylinder. O-rings and other seals prevent internal and
external leakage.
The cylinder weighs approximately 19.9 lb (9.07 kg).
Maintenance
Disassembly
NOTE: Any maintenance requiring disassembly of the
cylinders should include replacement of all seals
and rings. A seal kit will supply the required items.
1. Secure the cylinder in a clean work area by use of
clamps or a chain vise to prevent rolling.
2. Retract the cylinder fully to avoid damaging the rod
during removal.
NOTE: Mark or note the piston and head relationship to the
rod and barrel.
3. Clean away all dirt from the head. Place protective
padding around the rod near the head to prevent
damaging the chrome during head removal.
4. Position the rod mount with the ports facing down.
CAUTION
Possible Equipment Damage!
Exercise extreme care when handling 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
Possible Equipment Damage!
Do not damage the O-rings during installation of the check
valve. If the check valve turns freely then gets hard to turn,
then easy to turn, remove the check valve and check the
o-rings. They have probably been damaged by a sharp
edge of a port.
CAUTION
Flying Parts Hazard!
Use only a source of controlled hydraulic oil pressure to
cycle or pressurize the cylinder.
Parts can fly from the cylinder at dangerous speeds when
using air pressure.
CAUTION
Flying Parts Hazard!
Do not use air pressure to remove the rod. Use only a
source of controlled hydraulic oil pressure if the rod is
hard to move.
Parts can fly from the cylinder at dangerous speeds when
using air pressure.
CAUTION
Possible Equipment Damage!
Exercise extreme care when handling or setting down the
rod. Damage to the rod surface may cause unnecessary
maintenance and expense.
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