Caterpillar — Engine Crankcase Breather - Clean
Maintenance
From a Caterpillar owner's manual covering: 3508, 3512, 3512B, 3516, 3516B. Check it applies to your exact model before use.
Applies to: Caterpillar 3508, Caterpillar 3512, Caterpillar 3512B, Caterpillar 3516, Caterpillar 3516B
Before you start
- Do not attempt to disassemble the breathers.
Procedure
- Loosen clamp (1). Slide the clamp down on tube (2).
- Loosen clamps (3). Remove both breathers as a unit.
- Remove O-ring seals (4) from valve covers. Inspect; obtain new seals if necessary.
- Remove two clamps (6). Remove both breathers (5) from hose tee (7). Inspect tee for cracks.
- Turn breathers upside-down. Clean breather elements with clean, nonflammable solvent.
- Allow breather elements to dry before installation. Do not disassemble breathers.
- Install breathers into tee; tighten clamps to the torque in Service Manual, Specifications.
- Coat O-ring seals with clean engine oil; install and tighten clamps.
Specs & values
- Tighten clamps to the torque listed in Service Manual, Specifications
Full service-parts list: Caterpillar 3508 →, Caterpillar 3512 →, Caterpillar 3512B →, Caterpillar 3516 →, Caterpillar 3516B →
Source: Caterpillar owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.