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6 - 4
CLUTCH
MOUNTING STUD
OR ROD
DIAL INDICATOR
INDICATOR
PLUNGER
CLUTCH
HOUSING
BORE
J9006-26
Fig. 2 Checking Clutch Housing Bore Runout
.000
CLUTCH
HOUSING
BORE
CIRCLE
+ .002
+ .004
.001
(SAMPLE READINGS)
J9006-27
Fig. 3 Housing Bore Measurement Points And
Sample Readings
SLOT SHOWS DIRECTION
OF OFFSET
OFFSET
DOWEL
1 DOWEL SELECTION 1
TIR
\falue
Dowel
m
Dowel
Offset
.011 - .021 inch
1736347
.007 inch
.022 - .035 inch
1736348
.014 inch
.036 - .052 inch
1736353
.021 inch
MEASURING
CLUTCH
HOUSING
FACE
RUNOUT
(1) Reposition t h e d i a l indicator plunger o n t h e
housing face (Fig. 5). Place t h e indicator plunger a t
the r i m o f t h e housing bore as shown.
(2)
Rotate
t h e crankshaft
u n t i l
t h e indicator
plunger i s a t t h e t e n o-clock position o n t h e bore.
T h e n zero t h e d i a l indicator.
(3) Measure a n d record face r u n o u t a t four points
90 degrees a p a r t around t h e housing face (Fig. 6).
Perform the measurement a t least twice for accuracy.
(4) Subtract t h e lowest r e a d i n g from t h e highest t o
determine t o t a l r u n o u t . A s a n example, refer to t h e
sample readings shown i n F i g u r e 6. I f t h e l o w read-
i n g was m i n u s .004 i n c h a n d t h e highest reading
was p l u s .009 i n c h , t o t a l r u n o u t is actually .013
inch.
(5) T o t a l allowable face r u n o u t is .010 inch. I f
r u n o u t exceeds t h i s figure, r u n o u t w i l l have t o be
corrected. Refer t o Correcting C l u t c h Housing Face
Runout.
INDICATOR
PLUNGER
DIAL INDICATOR
CLUTCH
HOUSING
FACE
INDICATOR MOUNTING
STUD OR ROD
J9006-29
Fig. 5 Measuring Clutch Housing Face Runout
CORRECTING
CLUTCH
HOUSING
FACE
RUNOUT
Housing face r u n o u t can be corrected b y i n s t a l l i n g
shims between the c l u t c h housing and transmission
(Fig. 7). T h e shims can be made from s h i m stock or
s i m i l i a r materials of the required thickness.
As a n example, assume t h a t face r u n o u t is t h e
same as shown i n Figure 6 a n d i n step (4) above. I n
t h i s case, three shims w i l l be needed. S h i m t h i c k -
nesses should be .009 ( a t t h e .000 corner), .012 (at
the -.003 corner) and .013 i n c h (at t h e -.004 corner).
After i n s t a l l i n g the c l u t c h assembly a n d housing,
t i g h t e n t h e housing bolts nearest t h e alignment dow-
els first. Correct housing bolt torques are: 30 ft-lbs
for 3/8 diameter bolts a n d 50 ft-lbs for 7/16 diameter
bolts.
J9006-28
Fig. 4 Housing Bore Alignment Dowels
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