Komatsu 830E-AC Shop Manual page 526

4. Place stands or cribbing under the truck frame
at each hoist cylinder mount
5. Open valve on suspension charging kit to
release nitrogen from the suspension. Discon-
nect charging kit.
6. Disconnect lubrication lines. Disconnect pres-
sure sensor cable.
7. Position a fork lift under the suspension hous-
ing, above the lower mounting pin. Secure sus-
pension to fork lift.
.
FIGURE 3-2. NITROGEN CHARGING VALVE
1. Valve Cap
2. Seal
3. Valve Core
4. Swivel Nut
5. Rubber Washer
NOTE: The mounting arrangement for the top and
bottom pins is identical.
H3-4
6. Valve Body
7. O-Ring
8. Valve Stem
9. O-Ring
Rear Suspensions
8. Remove locknuts (3, Figure 3-3) and cap
screws (2) at upper and lower pins (1) just on
the suspension cylinder to be removed.
9. Install pin removal tool (1, Figure 3-4) to each
lower pin using the cap screws listed in Table 1.
Tighten the cap screws to 240 ± 24 Nm (177 ±
17 ft lbs) torque.
®
The rear HYDRAIR II suspension weighs approx-
imately 1088 kg (2,400 pounds). Be certain the
capacity of the lifting device used is sufficient for
lifting this load.
10. Position a fork lift (or other suitable lifting
device) under the suspension to be removed
and secure it to the lifting device.
11. Attach both shackles (2) to cylinder (3).
12. Attach each shackle to pin removal tools (1).
FIGURE 3-3. SUSPENSION MOUNTING PIN
(Typical, Top and Bottom)
1. Pin
2. Cap Screw
3. Locknut
4. Bearing Spacer
5. Retainer Ring
6. Bearing
7. Cap Screw
8. Washer
9. Sleeve
H03024