TM 5-3805-281-24-2
Crankshaft, Main Bearings, and Flywheel
CHECK OIL SEAL HOUSING RUNOUT
IMPORTANT: On service "short block" assemblies,
rear oil seal housing runout is preset at
the factory. Do not remove housing
from block.
1. Position magnetic base dial indicator (A) on end of
crankshaft flange as shown. Preset dial indicator tip on
I.D. of oil seal housing bore (B).
2. Zero dial indicator and rotate crankshaft one full
revolution, observe full indicator movement. The
maximum oil seal housing bore runout is 0.15 mm
(0.006 in.).
If runout exceeds specification, loosen cap screws and
adjust housing to obtain an acceptable runout while
keeping bottom of seal housing flush with oil pan
mating surface.
Checking Rear Oil Housing Runout
3. Recheck oil seal housing bore runout. If runout still
exceeds specification, oil seal housing bore is possibly
distorted and should be replaced. See INSTALL
CRANKSHAFT REAR OIL SEAL HOUSING, earlier in
this group.
RG,RG34710,1183
1923OCT971/1