Komatsu 830E-AC Shop Manual page 688

ACCUMULATOR
Removal
Relieve pressure before disconnecting hydraulic
and other lines. Tighten all connections before
applying pressure. Hydraulic fluid escaping
under pressure can have sufficient force to enter
a person's body by penetrating the skin and
cause serious injury and possibly death if proper
medical treatment by a physician familiar with
this injury is not received immediately.
1. Turn the key switch OFF and allow 90 seconds
for the accumulators to bleed down. Turn the
steering wheel to be certain no oil remains in
the accumulator.
2. Remove Guard (5, Figure 5-3).
FIGURE 5-2. CHARGING VALVE
1. Valve Cap
2. Seal
3. Valve Core
4. Swivel Nut
(Small Hex Nut)
5. Rubber Washer
L5-4
6. Valve Body
(Large Hex Nut)
7. O-Ring
8. Valve Stem
9. O-Ring
Steering Component Repair
FIGURE 5-3. ACCUMULATOR VALVES
1. Valve Manifold
2. O-Ring
3. Cap Screw
4. Lockwasher
5. Guard
Ensure only the small swivel hex nut (4, Figure 5-
2) turns. Turning the complete charging valve
assembly may result in the valve assembly being
forced out of the accumulator by the nitrogen
pressure inside. Wear protective face mask when
discharging nitrogen gas.
3. Loosen small hex nut (4, Figure 5-2) three com-
plete turns. Remove valve cap (1). Install charg-
ing manifold assembly and bleed off all nitrogen
pressure.
4. Disconnect electrical leads at the pressure
switch located on top of the accumulator.
5. Disconnect and plug the hydraulic line (3, Fig-
ure 5-4) at the bottom of the accumulator.
6. Cap
7. Flat Gasket
8. Valve Assembly
9. Pressure Switch
L05035