Bearing Clearance Check
WARNING: This page is about a different car, the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, 2003 Ford Excursion, and 2003 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
When bearing damage is suspected, verify using the following procedure.
Check for Free Rotation
- Press and rotate the radial shaft, then repeat from the opposite side. If either the compressor wheel or the turbine wheel contacts the housing, the bearings are bad, and a new turbocharger must be installed.
NOTE:
The turbocharger must be preoiled before carrying out this check. Turbine and compressor wheels must spin freely when turned by hand. No housing contact is permitted.
Check Axial End Play
- Position the dial indicator on the turbine end of the radial shaft and zero the indicator. See Fig 1.
- Move the radial shaft back and forth by hand and record the reading.
- If readings exceed .0036" (.091mm), install a new turbocharger.
NOTE:
Radial shaft movement cannot readily be measured on this turbocharger.