D250E Series II and D300E Series II Articulated Trucks Caterpillar

Park the machine on a level surface. Ensure that the parking brake is fully engaged. Lower the dump body and stop the engine.

Illustration 1	g00604735

Remove hydraulic tank cover (1).

Strainer

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Illustration 2	g00604819

1. Unlock padlock (2) on filler cap (3). Remove filler cap (3) slowly in order to relieve the hydraulic system pressure.

2. Inspect filler cap gasket (4). If necessary, replace the filler cap gasket.

3. Remove retaining ring (5) .

4. Pull out strainer (6) .

5. Wash the strainer in clean nonflammable solvent. Inspect the strainer for damage. If necessary, replace the strainer.

6. Reinstall the strainer and associated components.

Oil Filter Elements

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Illustration 3	g00604821

1. Unscrew bolt (7) and remove the screen assembly.

2. Remove cotter pin and washer (8) from bolt (7). Withdraw screen (9) and hydraulic filter elements (10). Discard both filter elements.

3. Wash the screen in clean nonflammable solvent. Inspect the screen for damage. If necessary, replace the screen.

4. Install two new hydraulic filter elements (10) into screen (9) .

5. Assemble and reinstall the screen assembly as a unit. If necessary, use a new O-ring seal (11) .

Breather

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Illustration 4	g00604674

1. Unscrew breather (12) .

2. Examine the breather and the breather seal for damage.

3. Reinstall the breather. If necessary, install a new breather.

4. Clean up any spilled oil.

5. Install the hydraulic tank cover (1) .

6. Install filler cap (3) and padlock (2) .