Dodge RAM TRUCK 1500 1995 Service Manual page 269

§ - 21 CLUTCH
BR
MOUNTING STUD DIAL INDICATOR
OR ROD
INDICATOR
PLUNGER
CLUTCH
HOUSING
BORE J9006-26
Fig. 22 Checking Clutch Housing Bom Runout
.000
CLUTCH
HOUSING
BORE
CIRCLE
+ .002
+ 004
-.001
(SAMPLE READINGS) J9Q06-27
Fig. 23 Housing Bore Measurement Points And
Sample Readings
SLOT SHOWS DIRECTION
OF OFFSET
OFFSET
DOWEL
(4) Subtract the lowest reading from the highest to
determine total runout. As an example, refer to the
sample readings shown in Figure 26. If the low read­
ing was minus 0.004 in. and the highest reading was
plus 0.009 in., total runout is actually 0.013 inch.
(5) Total allowable face runout is 0.010 inch. If
runout exceeds this figure, runout will have to be
corrected. Refer to Correcting Clutch Housing Face
Runout.
C O R R E C T I N G CLUTCH HOUSING FACE
RUNOUT (NW4500)
Housing face runout, on gas or diesel engines, can
be corrected by installing shims between the clutch
housing and transmission (Fig. 27). The shims can be
made from shim stock or similar materials of the re­
quired thickness.
As an example, assume that face runout is the
same as shown in Figure 26 and in step (4) above. In
this case, three shims will be needed. Shim thick­
nesses should be 0.009 in. (at the 0.000 corner), 0.012
in. (at the -0.003 corner) and 0.013 in. (at the -0.004
corner).
After installing the clutch assembly and housing,
tighten the housing bolts nearest the alignment dow­
els first.
Clutch housing preferred bolt torques are:
• 41 N-m (30 ft. lbs.) for 3/8 in. diameter bolts
» 68 N-m (50 ft. lbs.) for 7/16 in. diameter bolts
• 47 N-m (35 ft. lbs.) for V10 and diesel clutch hous­
ing bolts
D O W E L S E L E C T I O N
T I R
V A L U E
O P F S E T D O W E L
K i W i H i D
0.011 -0.021 inch
0.007 inch
0.022 - 0.035 inch
0.014 inch
0.036 - 0.052 inch
0.021 inch
J9206-7
Fig. 24 Housing Bore Alignment Dowel Selection
(3) Measure and record face runout at four points
90° apart around the housing face (Fig. 26). Perform
the measurement at least twice for accuracy.