Komatsu 830E-AC Shop Manual page 130

9. Remove fan guard (2, Figure 3-4) from shroud:
a. Guard can be completely removed from the
truck by separating the halves and removing.
b. If complete removal is not necessary,
remove hardware attaching guard to shroud
and slide assembly toward the engine and
allow it to hang on the fan clutch.
10. Disconnect batteries using the following proce-
dure in this order:
a. Open battery disconnect switch located on
battery switch box on top of front bumper.
b. Inside the battery box, identify the battery
ground cables that connect the negative ter-
minals of two batteries to the ground bus bar
in the bottom of the battery box. Disconnect
these ground cables from the negative termi-
nal of each battery.
c. Disconnect the ground cables from below
the battery box.
d. Disconnect the three positive battery cables
from the bus bar outside the battery box.
Also disconnect three wiring harness from
the battery box.
e. Remove mounting cap screws and remove
battery box from front bumper.
11. Disconnect hoses and pressure switch at
receiver/drier located on fan shroud.
12. Remove lower right grille section and discon-
nect hoses from fuel cooler. Cap openings to
prevent contamination.
13. Disconnect headlight wire harness at each light.
Remove cable clamps and remove harness to
allow radiator removal.
C3-6
14. Remove hardware attaching grille structure to
radiator assembly, attach overhead crane, and
lift slightly. Move grille structure forward to clear
radiator assembly. Lift grille structure off truck
and set aside.
15. Install lift eyes (included in truck tool group) in
tapped blocks (6, Figure 3-4) at upper corners
of radiator assembly and attach overhead
crane.
The radiator assembly weighs approximately
1907 kg (4,200 lbs) Ensure lifting device is capa-
ble of lifting the load.
16. Remove radiator support struts (3), upper sup-
port rods, and hardware (2, Figure 3-3) attach-
ing radiator
subframe.
17. Lift radiator enough to separate from mounts on
subframe and move forward until shroud clears
the engine fan.
Do not allow shroud to contact fan blades.
18. Move assembly to a work area. Remove air
conditioner condenser and fuel cooler.
Cooling System
assembly to power module
C03035