How to Rebuild an ATS Turbo

A turbocharged engine is more efficient. The ATS turbocharger contains a turbine which spins at extremely high speeds. Over time, the moving parts will begin to wear out. When that happens, you will hear a high-pitched whine coming from the engine, primarily when you accelerate sharply. Rebuilding a turbocharger is only moderately difficult and can be done with standard tools. If you do this yourself, you can save hundreds of dollars in repair expenses.

Instructions

1

Scribe the compressor housing, backing plate and exhaust housing with the black felt marker to ensure that you can align everything properly on re-assembly. Remove the five bolts on the compressor housing, using the socket wrench and a socket. Tap it lightly with the rubber mallet and remove the housing. The compressor wheel is now exposed. Remove the bolts securing the compressor wheel to the backing plate, using two sockets and both wrenches. Slide the wheel off of the shaft, scribing it and the shaft as you do so to ensure that you can reinstall it in the same alignment. Gently set the compressor wheel aside, taking care not to damage any of the blades. Once the compressor wheel is removed, use a socket and the wrench to remove the four bolts securing the backing plate to the turbocharger housing. Remove the backing plate and set it aside.

2

Remove the exhaust housing from the center section. Remove the bolts one-quarter turn at a time, using the socket wrench and a socket. This allows you to remove the center section in a perfectly parallel fashion so as to prevent the turbine wheel from binding. As you proceed, turn the turbine wheel periodically to ensure that it is free. Once all of the bolts have been removed, gently tap the center section with the rubber mallet and remove it from the exhaust housing. Slide the exhaust wheel and shaft out and set it to one side. Use the carburetor cleaner and brass brush to remove any buildup.

3

Remove the two journal bearings from each side of the center section. Remove the snap rings securing the journal bearings, using the snap-ring pliers and working on one side at a time. Slide out the old bearings. Remove the inner snap rings and replace them. Coat the new bearings and snap rings with engine oil and install them. Slide the exhaust wheel and shaft into the new bearings. Replace the large rubber seal on the compressor side of the center section and attach the backing plate. Slide the compressor wheel onto the shaft and bolt it into place. Reinstall the compressor housing, checking to ensure the scribe marks align properly.

4

Attach the exhaust housing by sliding it into place carefully so that it does not damage the turbine. After checking your scribe marks to ensure everything is aligned properly, bolt the exhaust housing into place. Spin the turbine to ensure that it moves freely.