Caterpillar C27 / C32 — Turbocharger - Inspect
Maintenance
For the Caterpillar C27 / C32, from the Caterpillar owner's manual.
Applies to: Caterpillar C32
Before you start
- If the turbocharger fails during engine operation, damage to the compressor wheel and/or the engine may occur.
- Turbocharger components require precision clearances. The turbocharger cartridge must be balanced.
Procedure
- Remove the exhaust outlet piping and the air inlet piping from the turbocharger; inspect piping for oil and clean interiors.
- Turn the compressor wheel and the turbine wheel by hand; the assembly should turn freely.
- Inspect the wheels for contact with the turbocharger housing; if contact is indicated, the turbocharger must be reconditioned.
- Check the compressor wheel for cleanliness to determine the source of dirt or oil.
- Use a dial indicator to check the end clearance on the shaft; compare to Service Manual specifications.
- Inspect the bore of the turbine housing for corrosion.
- Clean the turbocharger housing with standard shop solvents and a soft bristle brush.
- Fasten the air inlet piping and the exhaust outlet piping to the turbocharger housing.
Tools required
- Dial indicator Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Caterpillar C32 →
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.