Caterpillar 3126B / 3126B Industrial Engine — Turbocharger - Inspect/Clean
Maintenance
For the Caterpillar 3126B / 3126B Industrial Engine, from the Caterpillar owner's manual.
Applies to: Caterpillar 3126B, Caterpillar 3126B Industrial Engine engine
Before you start
- Turbocharger bearing failures can cause large quantities of oil to enter the air inlet and exhaust systems.
- Do not continue engine operation until the turbocharger is repaired or replaced.
Procedure
- Remove the exhaust outlet piping and air inlet piping from the turbocharger. Visually inspect for oil.
- Turn the compressor wheel and turbine wheel by hand; the assembly should turn freely.
- Check the compressor wheel for cleanliness; oil on the back side may indicate a failed turbocharger oil seal.
- Use a dial indicator to check the end clearance on the shaft.
- Inspect the bore of the turbine housing for corrosion.
- Clean the turbocharger housing and the backing plate 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 3126B →, Caterpillar 3126B Industrial Engine 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.