3508, 3512 and 3516 Generator Set Engines Caterpillar

Removal Procedure

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Illustration 1	g01962284

1. Loosen clamp (3).

2. Remove bolt (7) and the clips. Remove tube (6).

3. Loosen clamps (5). Remove both breathers (4) as a unit. Remove the O-ring seals from breathers (4).

4. Loosen clamps (2). Disconnect tee (1) from breathers (4).

5. Turn the breathers upside-down in order to inspect the condition of the breather elements.

   Clean the breather elements with clean, nonflammable solvent. If the breather elements remain contaminated after the cleaning, discard the breathers and obtain new breathers. Do not attempt to disassemble the breathers.

   Allow the breather elements to dry before installation.

Installation Procedure

1. Install breathers (4) in the reverse order of removal.

   1. Apply clean engine oil to the O-ring seals.

   2. Tighten clamps (2) to a torque of 3.0 ± 0.5 N·m (27 ± 4 lb in).