Dodge dakota 2002 Service Manual page 282

DR
CLUTCH HOUSING (Continued)
Fig. 10 MEASUREMENT POINTS AND READINGS
1 - CLUTCH HOUSING BORE CIRCLE
(9) Subtract each reading from the one 180° oppo-
site to determine runout and direction. Bore runout
example (Fig. 10):
• 0.000 – (–0.007) = 0.007 in.
• +0.002 – (–0.010) = 0.012 in.
• +0.004 – (–0.005) = 0.009 in.
• –0.001 – (+0.001) = –0.002 in.
In this example the largest or total indicator read-
ing (TIR) difference is 0.012 inch. This means the
housing bore is offset from the crankshaft centerline
by 0.006 in. which is 1/2 of 0.012 inch. The dowels
needed to correct this have an offset of 0.007 in. (Fig.
11).
Fig. 11 ALIGNMENT DOWEL SELECTION
1 - SLOT DIRECTION OF OFFSET
2 - OFFSET DOWEL
TIR VALUE
0.011 - 0.021 inch
0.022 - 0.035 inch
0.036 - 0.052 inch
Remove housing and install dowels with the slotted
side facing out so they can be turned with a screw-
OFFSET DOWEL REQUIRED
0.007 inch
0.014 inch
0.021 inch
driver. Then install the housing and mount the dial
indicator and check bore runout again. Rotate the
dowels until the TIR is less than 0.010 inch.
Clutch Housing Face Runout
(1) Position dial indicator towards the housing face
(Fig. 12) with indicator plunger on the rim of the
housing bore.
Fig. 12 DIAL INDICATOR LOCATION
1 - INDICATOR PLUNGER
2 - DIAL INDICATOR
3 - CLUTCH HOUSING FACE
4 - INDICATOR MOUNTING STUD OR ROD
(2) Rotate crankshaft until indicator plunger is at
the 10 O'clock position and zero the dial indicator.
(3) Measure and record face runout readings at
four points 90° apart (Fig. 13). Take measurement at
least twice for accuracy.
Fig. 13 MEASUREMENT POINTS AND READINGS
1 - CLUTCH HOUSING FACE CIRCLE (AT RIM OF BORE)
(4) Subtract lowest reading from highest to deter-
mine total runout. If low reading was minus 0.004
in. and highest reading was plus 0.009 in. the total
runout is 0.013 inch.
CLUTCH 6 - 9