Turbocharger TD08H 49188-03000 49188-01286 Hyundai Truck

Inspecting the Bearing Housing

The next step is to inspect the bearing housing bore diameters exactly where the turbine end and compressor end bearings ride. This will require the small bore telescoping gauges. Carefully rock the bore gauges back and forth to make sure you have an accurate reading, then use your tenths-reading micrometer to obtain the bearing housing bore size on both the compressor and turbine ends. Don’t be surprised if you find them to be slightly different. The turbine end runs quite a bit hotter and accelerated wear can be seen here. Compare these dimensions to your rebuild specs. If they’re in tolerance, you can proceed with final cleaning and prepare for reassembly.