Skytrak 6036 Service Manual Bedienungsanleitung PDF herunterladen (Seite 188)

Engine: Cummins 4BT3.9

7.10

Model 6036 Legacy

7.6.3 Radiator/Oil Cooler and Coolant

Heater 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 instrument cluster 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.

Note: If engine removal is required, the radiator and oil

cooler can be removed from the vehicle along with the

engine as one unit.

a. Oil Cooler and Radiator Removal

Note: Always install new hex-head elastic locknuts.

1. Level the vehicle, ground the attachment, place the

travel select lever in NEUTRAL (N), 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 key ignition switch.

(Refer to Section 1.5, “Accident Prevention Tag

Usage.”)

3. Unlock, unlatch and open the side and rear engine

access doors. Allow the engine to cool before

proceeding. Draining the cooling system while the

engine is hot can cause cracks in the engine block.

4. Disconnect the negative (-) battery cable (Fig. 7-7, 1)

and positive (+) battery cable (2) from the battery (3).

Disconnect the negative (-) grounding cable (4) from

the vehicle frame (5).

5. Remove the battery hold-down nuts (6) threaded

hold-down rods (7) and hold-down bracket (8).

Remove battery from vehicle. Store battery in a cool,

dry area.

Figure 7-7 Battery and Cable Location

6. Slowly turn the radiator cap (not shown) to the first

stop, and allow any pressure to escape. Remove the

radiator cap.

7. Place a suitable container beneath the radiator

petcock (Fig. 7-8, 1).

8. Place a funnel at the base of the radiator to channel

the drained coolant into the container. Open the

radiator petcock (Fig. 7-8, 1), and allow the coolant

to drain into a suitable container. Transfer the coolant

into a properly labeled container. Dispose of

properly. Close the radiator petcock.

Figure 7-8 Drain the Radiator

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.

MA8410

OA1310

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