Caterpillar C15 Industrial Engine — Engine Air Cleaner Service Indicator - Inspect
Maintenance
For the Caterpillar C15 Industrial Engine, from the Caterpillar owner's manual.
Applies to: Caterpillar C1.5 engine
Before you start
- Excessive force may crack the top of the service indicator.
Procedure
- Observe the service indicator. Clean or replace the air cleaner element when the yellow diaphragm enters the red zone or the red piston locks in the visible position.
- Check for ease of resetting. The service indicator should reset in less than three pushes.
- Check the movement of the yellow core when the engine is accelerated to rated speed. The yellow core should latch at the greatest vacuum.
- Replace the service indicator if it does not reset easily or if the yellow core does not latch.
- Replace the service indicator annually regardless of operating conditions.
- Tighten a new service indicator to a torque of 2 N·m (18 lb in).
Specs & values
- Service indicator torque: 2 N·m (18 lb in)
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.