A/T Differential Carrier Bearing Preload Inspection
Special Tools Required
Image Description/Tool Number
609752.png Preload Inspection Tool 070AJ-0020101
310169.png Driver Handle, 15 x 135L 07749-0010000
1161307.png Attachment, 83 mm 07HAD-SG00100

NOTE: If the transmission housing, the torque converter housing, the differential carrier, the tapered roller bearing, the bearing outer race, or the thrust shim were removed, the bearing preload must be adjusted.

1. Carrier Bearing Preload - Inspect
1.
Remove the bearing outer race (A), the spacer (B), and the 85 mm thrust shim (C) by heating the transmission housing to about 212 °F (100 °C) with a heat gun (D).
NOTE:
Do not heat the transmission housing more than 212 °F (100 °C).
Let the transmission housing cool to room temperature before adjusting the bearing preload.
2.
Replace the tapered roller bearing when the bearing outer race is to be replaced.
3.
Install the 85 mm thrust shim (A) in the transmission housing (B). If you install a new 85 mm thrust shim, use the same thickness shim as the old one.
NOTE: Do not use an 85 mm shim on the torque converter housing side.
4.
Install the spacer (C) by aligning the tab (D) with the groove (E).
5.
Set the bearing outer race (F).
6.
Drive the bearing outer race securely using the 15 x 135L driver handle and the 83 mm attachment so there is no clearance between the bearing outer race, the spacer, the 85 mm thrust shim, and the transmission housing.
7.
Install the differential assembly (A).
8.
Install a new gasket (B) and two dowel pins (C).
9.
Place the transmission housing (D).
10.
Install the transmission housing mounting bolts (E: 8 mm bolts, F: 10 mm bolts) along with the skid block (G), and tighten the bolts in at least two steps in a crisscross pattern to the specified torque.
11.
Rotate the differential assembly in both directions to seat the bearings.
12.
Measure the starting torque of the differential assembly with the preload inspection tool, a torque wrench (A), and a socket (B).
NOTE: Measure the starting torque at normal room temperature in both directions.
Standard
 
New bearings:
   
3.9?5.6 N·m (40?57 kgf·cm, 35?50 lbf·in)
 
Reused bearings:
   
3.6?5.3 N·m (37?54 kgf·cm, 32?47 lbf·in)
13.
If the measurement is out of the standard, remove the 85 mm thrust shim, and measure its thickness.
14.
Select a new 85 mm thrust shim.
To increase the starting torque, increase thickness of the 85 mm thrust shim.
To decrease the starting torque, decrease the thickness of the 85 mm thrust shim.
Changing the 85 mm shim to the next size will increase or decrease the starting torque about 0.5? 0.6 N·m (5.10?6.12 kgf·cm, 3.8?4.5 lbf·in).
THRUST SHIM, 85 mm
No.
Thickness
A
1.350 mm (0.05315 in)
B
1.375 mm (0.05413 in)
C
1.400 mm (0.05512 in)
D
1.425 mm (0.05610 in)
E
1.450 mm (0.05709 in)
F
1.475 mm (0.05807 in)
G
1.500 mm (0.05906 in)
H
1.525 mm (0.06004 in)
I
1.550 mm (0.06102 in)
J
1.575 mm (0.06201 in)
K
1.600 mm (0.06299 in)
L
1.625 mm (0.06398 in)
M
1.650 mm (0.06496 in)
N
1.675 mm (0.06594 in)
O
1.700 mm (0.06693 in)
P
1.725 mm (0.06791 in)
Q
1.750 mm (0.06890 in)
R
1.775 mm (0.06988 in)
S
1.800 mm (0.07087 in)
T
1.825 mm (0.07185 in)
U
1.850 mm (0.07283 in)
V
1.875 mm (0.07382 in)
W
1.900 mm (0.07480 in)
X
1.925 mm (0.07579 in)
Y
1.950 mm (0.07677 in)
Z
1.975 mm (0.07776 in)
AA
2.000 mm (0.07874 in)
AB
2.025 mm (0.07972 in)
AC
2.050 mm (0.08071 in)
AD
2.075 mm (0.08169 in)
AE
2.100 mm (0.08268 in)
AF
2.125 mm (0.08366 in)
AG
2.150 mm (0.08465 in)
AH
2.175 mm (0.08563 in)
AI
2.200 mm (0.08661 in)
AJ
2.225 mm (0.08760 in)
AK
2.250 mm (0.08858 in)
AL
2.275 mm (0.08957 in)
AM
2.300 mm (0.09055 in)
AN
2.325 mm (0.09154 in)
AO
2.350 mm (0.09252 in)
AP
1.250 mm (0.04921 in)
AQ
1.275 mm (0.05020 in)
AR
1.300 mm (0.05118 in)
AS
1.325 mm (0.05217 in)
15.
Install a new thrust shim, then recheck the starting torque.