Terex TR60 Maintenance Manual page 218

Suspension System - Front Ride Cylinder
Section 180-0030
INSTALLATION
Numbers in parentheses refer to Fig. 2.
WARNING
To prevent personal injury and property
damage, be sure blocking or lifting equipment
is of sufficient capacity and properly secured to
do the job safely.
1. Use lift truck forks with blocking placed as shown
in Fig. 3 to position front ride cylinder to frame
mounting surface.
Note: It may be helpful to use two guide studs
approximately 25 mm (1 in) in diameter and 200 mm
(8 in) long to guide the front ride cylinder into position
on the frame's horse collar.
2. Secure front ride cylinder (1) to frame with
washers (2) and bolts (3). Alternately tighten bolts (3)
to a torque of 900 - 980 Nm (660 - 730 lbf ft).
3. Remove equipment used to position front ride
cylinder to frame mounting surface.
4. Attach steering cylinder and tie rod to steering arm
with castle nuts and cotter pins. Tighten tie rod nut to
a torque of 1 150 - 1 290 Nm (850 - 950 lbf ft) and
steering cylinder nut to a torque of 1 560 - 1 630 Nm
(1 150 - 1 200 lbf ft).
Note: If necessary, refer to Section 220-0120,
STEERING CYLINDER AND LINKAGE, for procedure
in Step 4 above.
5. Connect brake hydraulic line to brake calliper and
bleed braking system. Refer to Section 165-0020,
BRAKE PARTS.
6. Install front tyre and rim assembly as described in
Section 140-0040, WHEEL, RIM AND TYRE.
7. If the opposite ride cylinder was removed, follow
steps 1 through 6 to install the cylinder.
8. Charge ride cylinders as described in 'Charging
Instructions', in this section.
6
CHARGING RIDE CYLINDER
WARNING
To prevent personal injury and property
damage, be sure blocking or lifting equipment
is of sufficient capacity and properly secured to
do the job safely.
Relieving Cylinder Pressure
Numbers in parentheses refer to Fig. 8.
WARNING
Pressurized cylinders. Release pressure as
described below before removing valves or
fittings. Accidental release of pressure will
result in personal injury and property damage.
Note: Vehicle must be empty and on a level surface
prior to relieving ride cylinder pressure.
1. Support the frame near the ride cylinder with
blocking and/or a hydraulic jack with adequate
capacity.
2. Remove the cap from nitrogen charging valve (4)
at the top of the cylinder. Turn the hex nut on the
valve 1/4 to 1/2 turn counter-clockwise and depress
the valve core. If no gas escapes, continue to turn
the hex nut in 1/4 turn increments until the nitrogen
releases as the valve core is depressed.
3. Remove blocking or release pressure on the
hydraulic jack and allow the vehicles weight to fully
retract the ride cylinder rod.
WARNING
Pressurised cylinders. Keep valve core
depressed until all gas is bled from cylinder.
Failure to release all pressure may result in
personal injury or property damage.
4. Depress nitrogen charging valve (4) core again to
be sure all pressure has been relieved.
Note: Nitrogen leaving the cylinder will often carry oil
with it. This results from foaming of the oil in the
cylinder. The foaming takes place as nitrogen which
was dissolved in the oil at high pressure expands at
atmospheric pressure. The oil lost in this operation
must be replaced in the charging operation. The
SM 1584 12-98