Dodge 2001 Ram 1500 Owner's Manual page 124

BR/BE
FRONT AXLE - 248FBI (Continued)
Fig. 4 Pinion Gear ID Numbers
1 - PRODUCTION NUMBERS
2 - PINION GEAR DEPTH VARIANCE
3 - GEAR MATCHING NUMBER
Note where Old and New Pinion Marking columns
intersect. Intersecting figure represents plus or
minus the amount needed.
Note the etched number on the face of the pinion
gear head (–1, –2, 0, +1, +2, etc.). The numbers rep-
resent thousands of an inch deviation from the stan-
dard. If the number is negative, add that value to the
required thickness of the depth shims. If the number
Original Pinion
Gear Depth
Variance
+4 +0.008
+3 +0.007
+2 +0.006
+1 +0.005
0 +0.004
−1 +0.003
−2 +0.002
−3 +0.001
−4
PINION DEPTH MEASUREMENT AND ADJUSTMENT
Measurements are taken with pinion bearing cups
and pinion bearings installed in the housing. Take
measurements with Pinion Gauge Set and Dial Indi-
cator C-3339 (Fig. 6).
(1) Assemble Pinion Height Block 6739, Pinion
Block 6736 and rear pinion bearing onto Screw 6741
(Fig. 6).
PINION GEAR DEPTH VARIANCE
Replacement Pinion Gear Depth Variance
−4 −3 −2
+0.007 +0.006
+0.006 +0.005
+0.005 +0.004
+0.004 +0.003
+0.003 +0.002
+0.002 +0.001
+0.001 0
0 −0.001
0 −0.001 −0.002
Fig. 5 Adjustment Shim Loactions
1 - PINION GEAR DEPTH SHIM/OIL BAFFLE
2 - DIFFERENTIAL BEARING SHIM
is positive, subtract that value from the thickness of
the depth shim. If the number is 0 no change is nec-
essary.
−1 0
+0.005 +0.004 +0.003
+0.004 +0.003 +0.002
+0.003 +0.002 +0.001
+0.002 +0.001
+0.001 0 −0.001
0 −0.001 −0.002
−0.001 −0.002 −0.003
−0.002 −0.003 −0.004
−0.003 −0.004 −0.005
(2) Insert assembled height gauge components,
rear bearing and screw into the housing through pin-
ion bearing cups (Fig. 7).
(3) Install front pinion bearing and Cone-nut 6740
hand tight (Fig. 6).
(4) Place Arbor Disc 6732 on Arbor D-115-3 in posi-
tion in the housing side bearing cradles (Fig. 8).
FRONT AXLE - 248FBI
+1 +2 +3
+0.002 +0.001
+0.001 0
0 −0.001
0 −0.001 −0.002
−0.002 −0.003
−0.003 −0.004
−0.004 −0.005
−0.005 −0.006
−0.006 −0.007
3 - 51
+4
0
−0.001
−0.002
−0.003
−0.004
−0.005
−0.006
−0.007
−0.008