C280-08 Tier 4 Engine Caterpillar

Removal Procedure

Start By:

1. Remove the water pumps.

2. Remove the engine oil pump.

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Illustration 1	g03743334

Note: The same procedure is used for removing the idler gears and the idler shafts on both sides. The idler gears on each side are different. The idler gears must be installed on the correct side in order to get the correct engagement with the crankshaft gear.

1. Remove the bolts that hold idler shaft (2) in place.

   Note: DO NOT allow the gear to fall when the idler shaft is removed.

2. Install Tooling (A) in idler shaft (2).

3. Support idler gear (1). Tighten Tooling (A) evenly. Remove idler shaft (2) from the front housing.

4. Remove idler gear (1) from the front housing.
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   Illustration 2	g00561404

5. Remove O-ring seals (3) from idler shaft (2).
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   Illustration 3	g00561405

   Note: The idler bearing in the illustration shows a groove for an internal oil supply. The new idler bearings do not have a groove for an internal oil supply.

6. If necessary, remove bearing (4) from idler gear (1).
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   Illustration 4	g03743336

7. Remove thrust washer (5) from the front housing.