3116 Engine for Challenger 35, and Challenger 45 Agricultural Tractors and 3126 Engine for Challenger 55 Agricultural Tractor Engine Supplement Caterpillar

Removal Procedure

Start By:

1. Open the hood. Refer to Operation and Maintenance Manual, SEBU7204, "Engine Compartment Hood - Raise".

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At operating temperature, the engine coolant is hot and under pressure. Steam can cause personal injury. Check the coolant level only after the engine has been stopped and the fill cap is cool enough to touch with your bare hand. Remove the fill cap slowly to relieve pressure. Cooling system conditioner contains alkali. Avoid contact with the skin and eyes to prevent personal injury.

1. Drain the coolant until the level is below the water temperature regulator. The coolant must be drained into a suitable container for storage or disposal. The capacity of the cooling system is approximately 32.6 L (8.61 US gal).

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Illustration 1	g00566537

2. Loosen hose clamp (2) and remove hose (1) from water regulating housing (3) .

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Illustration 2	g00566538

3. Remove two bolts (4) and the two washers.

4. Remove pipe (5) .

5. Remove water regulator (6) and regulator gasket (7) from water regulating housing (3) .

Installation Procedure

Note: Check the gasket, hose clamp and hose for wear or damage. Use new replacement parts, if necessary.

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Illustration 3	g00566538

1. Install water regulator (6) and regulator gasket (7) in water regulating housing (3) .

2. Install pipe (5) with two bolts (4) and the two washers.

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Illustration 4	g00566537

3. Install hose (1) with hose clamp (2) on water regulating housing (3). Tighten the hose clamp.

4. Fill the cooling system. Refer to Operation and Maintenance Manual, SEBU7204, "Cooling System Level - Check" for the correct procedure.

End By: Close the hood. Refer to Operation and Maintenance ManualSEBU7204, "Engine Compartment Hood - Lower".