G33.30-3135-12
1 Lock side of axle tube (dimension 1 stamped or engraved)
2 Circumference of ring gear (dimension 2 engraved)
3 End face of drive pinion (dimension 3 engraved)
4 End face of lock side of axle tube (dimension 4 engraved)
A Dimension 1
B Dimension 2
C Total height (large tapered roller bearing with outer race)
F Dimension from end face of drive pinion to contact surface of pinion flange
G Dimension 3
H Dimension from bearing inner race to contact surface on differential housing
J Dimension 1 (A) + constant (X)
K Dimension 4
X Constant
S1 Shim thickness (large tapered roller bearing)
S2 Shim thickness (small tapered roller bearing)
S3 Shim thickness (pinion flange)
Determining shim thickness (S1, S2 and S3)
1 Determine shim thickness S1 (large tapered roller bearing).
S1 = J (B + C)
X = Constant (60.51 mm)
Example:
J = A + X
J = 47.60 mm+ 60.51 mm = 108.11 mm
B + C = 77.26 mm + 29.00 mm = 106.26 mm
S1 = 108.11 mm 106.26 mm = 1.85 mm
S1 = 1.85 mm
The dimensions given are all approximate figures, use only the measured values for adjustment.
Dimension "1" (A) is stamped or engraved on the lock side of the axle tube.
Dimension "2" (B) is engraved on the circumference of the ring gear.
2 Measure total height (C) of large tapered roller bearing with outer race from differential.
Calculation:
S1 = J (B + C)
J = A + X
J = mm + mm = mm
B + C = mm + mm = mm
S1 = mm mm = mm
S1 = mm
3 Determine shim thickness S2 (small tapered roller bearing).
S2 = H + I
H = mm
+ I = 0,1 MM
S2 = mm
Dimension (H) from tapered roller bearing inner race to contact surface of tapered roller bearing on differential housing.
Preload I (specified value = 0.1 mm)
4 Install tapered roller bearing outer race in axle tube without shims.
5 Push tapered roller bearing inner race about 2/3 of the way onto bearing seat on differential housing.
6 Place differential in axle tube on lock side.
7 Place long axle tube in position and tighten crosswise with 6 bolts while continuously turning ring gear.
8 Then remove long axle tube and tapered roller bearing outer race again.
9 Measure gap H with feeler gauge and add the preload I to the measured dimension.
10 Place shim S2 equal to determined dimension in axle tube bearing seat and install tapered roller bearing outer race.
11 Install tapered roller bearing inner race on differential up to contact surface.
12 Determine shim thickness S3 (pinion flange).
S3 = (F + G) K
Example:
S3 = (91.80 mm + 85.96 mm) 177.76 mm
S3 = 177.76 mm 176.73 mm = 1.03 mm
S3 = 1.03 mm
The dimensions given are all approximate figures, use only the measured values for adjustment.
13 Measure dimension (F) from end face of drive pinion to contact surface of pinion flange using a depth gauge.
Dimension "3" (G) is engraved on the end face of the drive pinion.
Dimension "4" (K) is engraved on the end face of the lock side of the axle tube.
Calculation:
S3 = (F + G) K
S3 = ( mm + mm) mm
S3 = mm mm = mm
S3 = mm