Komatsu 830E-AC Shop Manual page 131

Installation
1. Reinstall shroud (1, Figure 3-4), air conditioner
condenser, and fuel cooler. Install air condi-
tioner receiver/drier (10) if removed.
The radiator assembly weighs approximately
1907 kg (4,200 lbs) Ensure lifting device is capa-
ble of lifting the load.
2. Attach lifting eyes in tapped blocks at upper cor-
ners of radiator assembly (6, Figure 3-4). Attach
hoist and lift into place on power module sub-
frame.
3. Position radiator assembly to equalize gap
between tip of fan blades and shroud at right
and left sides. Install mounting hardware (2,
Figure 3-3) through lower mounts and tighten to
298 N·m (220 ft lbs) torque.
4. Install radiator support rods (3, Figure 3-4). If
necessary, adjust to position radiator perpen-
dicular to the subframe. Tighten the support
strut locknuts. Install upper support rods to
brackets on front upright supports.
5. Adjust fan shroud ring vertically to equalize gap
between tip of fan blades and ring.
6. Lift grille structure (2, Figure 3-2) into position
and install mounting hardware.
7. Route headlight wire harness to lights. Attach
connectors to lights and clamp harness at weld
studs.
8. Install upper and lower radiator piping. Seat
hoses and clamps securely.
C03035
9. Position fan guard against shroud and tighten
mounting hardware to 55 N·m (40 ft lbs)
torque. (If halves of guard were disassembled,
tighten cap screws clamping halves together to
34 N·m (25 ft lbs) torque.
10. Attach hoses to fuel cooler.
11. Route A/C condenser hoses to condenser and
attach. Install lower grille sections. Install
receiver/drier (10) hoses. Connect pressure
switch (11).
12. Install surge tank hoses and electrical wiring to
the coolant level probe (9, Figure 3-4). Clamp
hoses and electrical cables to the shroud. Install
surge tank cover.
13. Make sure all coolant drains are closed, hoses
are installed, and all wiring reconnected. Close
drain valve on main air tank.
14. If the truck is equipped with air conditioning, the
system must be evacuated and recharged.
Refer to "Heater/Air Conditioning System" in
Section M for detailed instructions for recharg-
ing with refrigerant.
15. Service the cooling system per the instructions
below.
16. Check for static leakage and correct any leaks.
After servicing is complete, start the engine and
run until normal operating temperature is
reached. Repeat check for leaks and correct as
required.
Cooling System C3-7