Bell Housing: Testing and Inspection
PRELIMINARY STEPS^ Lift the clutch pedal to its uppermost position to disengage the clutch pedal quadrant adjuster pawl from the clutch pedal adjuster quadrant assembly.
^ Hold in this position and, with a rubber band or tape, disengage clutch release lever cable from clutch release lever.
PROCEDURE
1. Remove the transmission and remove the flywheel housing from rear face of engine.
2. Remove clutch release hub and bearing, clutch pressure plate and clutch disc.
3. Inspect, clean and remove all nicks, burrs, paint and other foreign material from the following:
^ front and rear face of flywheel housing
^ flywheel housing bore surface
^ rear face of engine cylinder block
^ engine rear plate
^ flywheel and engine flywheel housing to block dowels. (Missing or damaged flywheel housing to block dowels must be replaced.) Refer to Service and Repair.
4. Install the engine rear plate and flywheel housing to the engine.
5. To check flywheel housing face runout, position the Magnetic Base/Flex Arm D78P-4201-C and Dial Indicator with Bracketry TOOL-4201-C or equivalents on flywheel. Position the dial indicator so the indicator button contacts the circumference just outside the transmission pilot hole. Tighten flex arm securely.
6. Push the crankshaft rearward to remove any end play. Zero the dial indicator.
7. Holding the crankshaft in the rearward position, rotate the crankshaft through one complete revolution by using a wrench on the crankshaft pulley attaching nut. The dial indicator should return to zero after one revolution unless end play or a loose universal clamp has affected the reading.
8. Record the greatest variation between indicator readings for one revolution. Repeat procedure to verify reading.
9. After completion of the flywheel housing face runout check, install Clutch Housing Alignment Adapter T75L-4201-A to the dial indicator and position the assembly to check bore runout. The rubber band shown attached to the lever must be installed as indicated, prior to installation of the lever, to preload the dial indicator for bore readings. Rubber band should be snug and provide light pressure on lever tip on bore of flywheel housing.
NOTE: The rubber band should be installed just snug enough to provide a light pressure of the lever tip on the bore of the flywheel housing. If rubber band is too tight, it may bind the dial indicator or distort reading during this step.
10. Zero the dial indicator. Rotate the crankshaft through one revolution as in Step 7. Record the greatest variation between the indicator reading for the complete crankshaft revolution. Repeat procedure to verify reading.
11. If the maximum variation measurements obtains/in Step 8 show that face runout exceeds 0.254 mm (0.010 inch) Total Indicator Runout (T.I.R.) and/or the bore runout in Step 10 exceeds 0.38 mm (0.015 inch) T.I.R., replace the flywheel housing.
NOTE: Remeasure new flywheel housing to verify proper installation.
BEFORE ASSEMBLY
^ Before assembly of the transmission to the flywheel housing, the front mounting face of the transmission should be inspected and cleaned.
^ Any nicks, burrs, paint or foreign material must be removed to make sure of alignment between these components.
^ If dowels on the flywheel or rear face of the engine are missing or damaged, refer to Service and Repair.