Detroit Diesel — Disassemble Turbocharger
Repair & overhaul
From a Detroit Diesel service manual — check it applies to your exact model before use.
Before you start
- Exercise care when removing the compressor and turbine housings to prevent damage to the wheels.
Procedure
- Clean the exterior with a non-caustic cleaning solvent. Mark related positions of the compressor housing, center housing and turbine housing with a punch or scribe.
- Loosen the V band coupling securing the compressor housing to the backplate assembly; remove the compressor housing and V band.
- T18A40: bend down lockplate ends and remove the eight bolts securing the four lockplates and turbine housing clamps. TV7101/TV8115: loosen the V band coupling and remove the turbine housing from the c
- Position the turbine wheel in a holding fixture; remove the wheel nut from the shaft using a double universal socket and tee handle to prevent bending the shaft.
- Press the compressor wheel from the wheel shaft assembly. Withdraw the wheel shaft assembly from the center housing.
- TV7101/TV8115: remove and discard the turbine piston ring from the wheel shaft.
- Bend down the lock tabs and remove the four bolts and lockplates securing the backplate assembly; remove the backplate assembly.
- Remove and discard the seal ring from the groove in the center housing. Remove the thrust spacer and piston ring(s); discard the piston rings.
- Remove the thrust collar, inboard thrust washer, bearing, bearing washer and snap ring. Discard the thrust washer, bearing, washer and snap ring.
- Remove the snap ring, bearing, bearing washers and snap ring from the opposite end. Discard the snap rings, bearing and washers.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Detroit Diesel service 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.