Caterpillar 3512 — Engine Crankcase Breather - Clean
Maintenance
For the Caterpillar 3512, from the Caterpillar owner's manual.
Applies to: Caterpillar 3512, Caterpillar 3512B engine
Before you start
- The fumes filter element must be replaced
- Keep all parts clean from contaminants
Procedure
- Loosen clamp (1) and slide the clamp onto tube (2).
- Loosen clamps (3) and remove both breathers as a unit.
- Remove and discard O-ring seals (4) from the valve covers.
- Remove clamps (6) and remove both breathers from hose tee (7).
- Inspect the hose tee for cracks; replace if cracked.
- Clean the breather elements with clean, nonflammable solvent.
- Allow the breather elements to dry before installation.
- Install the breathers into the tee and tighten the clamps.
- Coat new O-ring seals with clean engine oil and place on the valve covers.
- Install both breathers as a unit and tighten the clamps.
- Install the tube and tighten the clamp.
Specs & values
- Refer to Specifications, SENR3130 for proper torque
Full service-parts list: Caterpillar 3512 →, Caterpillar 3512B engine →
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.