Fuel Tank; Removal; Installation - Komatsu 830E-AC Shop Manual

Removal

1. Raise truck body and install body safety cables.
2. Drain sediment from tank and dispose of prop-
erly. Drain remainder of fuel into clean contain-
ers.
3. Disconnect fuel tank wire harness (13, Figure 4-
1) and remove harness clamps.
4. Remove ground wire (17).
5. Remove fuel supply hose (8) and return hose
(6) and plug to prevent contamination.
6. Remove hydraulic filter assembly (11) from fuel
tank. Support filters by placing a chain over the
frame rail. (It is not necessary to disconnect
hydraulic hoses.)
The weight of the empty fuel tank is approxi-
mately 1711 kg (3772 lbs). Be certain to use lifting
devices with adequate capacity.
7. Attach lifting device to tank lift eyes.
8. Remove cap screws (14), and flat washers (15).
9. Remove cap screws (4), lockwashers, and
mounting caps (3) from upper mounting trun-
ions.
10. Lift tank from brackets and move to work area.
11. Inspect rubber dampeners (16) and replace if
necessary.
B04026

FUEL TANK

Installation

The weight of the empty fuel tank is approxi-
mately 1711 kg (3772 lbs). Be certain to use lifting
devices with adequate capacity.
1. Thoroughly clean the frame mounting brackets
and the mounting hardware holes. Re-tap the
threads if damaged.
2. Lower tank into position over upper mounting
trunions.
3. Install mounting caps (3, Figure 4-1) and cap
screws (4) with lockwashers at upper mounting
trunnions. Do not tighten the hardware at this
time.
4. Install flatwashers (15) and cap screws (14)
with flat washer and lockwasher, and tighten to
420 N·m (310 ft lbs) torque.
5. Tighten mounting cap screws (4) to 711 N·m
(525 ft lbs) torque.
6. Attach ground wire (17), and connect wire har-
ness (13). Install wire harness clamps.
7. Attach fuel supply hose (8) and return hose (6).
8. Attach hydraulic filter assembly (11) to fuel
tank.
9. Refill tank with clean fuel.
Fuel Tank B4-3