SkyTrak 8042 Service Manual - Manual (Page 380)

7B.13 Model 8042, 10042, 10054 Legacy Rev. 10/03
Engine: Cummins QSB4.5T
7B.6.4 Radiator/Hydraulic and Transmission
Cooler Replacement
Before considering radiator or oil cooler replacement for
other than obvious damage, conduct a cooling system
pressure test check the coolant specific gravity, coolant
level, fan belt tension and dash panel temperature
indicator.
• If the engine runs hot, check the temperature of
the upper radiator hose.
• If the hose is not hot, the thermostat may be
stuck in the closed position.
• If the engine has overheated, performance may
suffer, indicating other damage including a leaking
cylinder head gasket, cracked cylinder head or
block, and/or other internal engine damage.
a. Oil Coolers and Radiator Removal
1. Level the vehicle, ground the attachment, place the
travel select lever in NEUTRAL (N), and engage the
neutral lock lever, engage the parking brake switch
and shut off the engine.
2. Remove the ignition key. Secure accident prevention
tags to the steering wheel and ignition key switch.
(Refer to
Section 1.5, “Accident Prevention Tags.”)
3. Disconnect the battery negative (-) ground cables (7)
and positive (+) cables (8) from the batteries (12).
4. Remove the battery hold-down nuts (9), threaded
hold-down rods (10), and hold-down bracket (11).
Remove batteries (12) from the vehicle. Store
batteries in a cool dry area.
5. Unlock, unlatch and open the side and rear engine
doors. Allow the engine to cool before proceeding.
6. Draining the cooling system while the engine is hot
can cause cracks in the engine block.
7. Slowly turn the radiator cap (1) to the first stop and
allow any pressure to escape. Remove the radiator
cap.
8. Locate the drain tube (2) and petcock (3) on the right
side of the radiator. Place a funnel (4) under the
drain tube (2) and loosen the drain petcock (3).
Transfer the coolant into a properly labeled container.
Dispose of properly if coolant needs to be replaced.
Close the radiator drain plug.
MH4210
7
8
9
10 11
7
8
12
12
WARNING:
DO NOT attempt this
procedure when the engine is hot. Wait for the
engine, muffler, and tailpipes to cool down
before proceeding. Failure to do so could result
in severe burns.
WARNING:
Hot coolant can cause
severe burns or eye injury. NEVER remove the
radiator cap while the engine is hot. The cooling
system is under pressure. Wear protective
clothing and safety glasses.