If the flywheel extends beyond the housing bell, the bore and face must be checked separately. Use the special
adapter in the tool set to check the housing bore.
Tap the front end of the crank- shaft with a soft hammer or pry it toward one end of the block
to ensure end play is in one direction only.
Adjust each dial indicator to read zero at the 12 o'clock position. Then rotate the crankshaft
one full revolution, taking readings at 45intervals (8 readings each for the bore and the bolting flange face).
Stop and remove the wrench or cranking bar before recording each reading to ensure accuracy. The maximum
total indicator reading must not exceed 0.013 inch for either the bore or the face.
If the runout exceeds the maximum limits, remove the flywheel housing and check for dirt or
foreign material (such as old gasket material) between the flywheel housing and the end plate and between the
end plate and the cylinder block.
Reinstall the flywheel housing and the flywheel and tighten the attaching bolts in the proper
sequence and to the specified torque. Then recheck the runout. If necessary, replace the flywheel housing.
12. Install the clutch housing, if used. Tighten the 3/8-16 attaching bolts to 30-35 lb ft (41-47 Nm)
torque and the 3/8-24 nuts to 35-39 lb ft (47-53 Nm) torque.
Install tool J 9748 in one of the crankshaft boltholes.
Install dial indicator J 8001-3 and position it to read the bore runout of the housing (Fig. 6).
Now check the runout by rotating the crankshaft. The runout should not exceed 0.008 inch.
Figure 6. Checking Bore Runout
Reposition the dial indicator to read the face runout and rotate the crankshaft. The maximum
allowable runout is 0.008 inch.
If the bore or face runout is excessive, loosen the housing attaching bolts and nuts slightly
and tap the housing with a soft hammer in the required direction until the runout is within limits. Tighten the
attaching bolts and nuts evenly to 30-35 and 35-39 lb ft (41-47 and 47-53 Nm) torque respectively. Then
recheck the runout.
Use a new gasket and install the oil pan. Install and tighten the 1/2-13 reinforcement bolts.
Remove the engine from the over-haul stand and complete assembly of the engine.