432E, 434E, 442E and 444E Backhoe Loaders Transmission (Autoshift) Caterpillar

Illustration 1	g01619222
Rear view

(1) Torque for 10 plug assemblies ... 40 to 54 N·m (30 to 40 lb ft)

(2) Thickness of five new friction discs and five new clutch discs for the reverse clutch is 19.40 ± 0.65 mm (0.764 ± 0.026 inch).

Thickness of one new 6Y-7929 Friction Disc ... 2.05 ± 0.08 mm (0.081 ± 0.003 inch)

Minimum thickness of one worn 6Y-7929 Friction Disc ... 1.62 mm (0.064 inch)

Thickness of one new 274-4553 Clutch Disc ... 1.78 to 1.88 mm (0.070 to 0.074 inch)

(3) As required, use the following shims in order to obtain a end play of 0.03 to 0.08 mm (0.001 to 0.003 inch):

Note: All the shims must be located against the bearing cup of the rear case. The 122-1879 Spacer must be in contact with the transmission case.

122-1879 Spacer

Quantity ... 2

Thickness of one spacer ... 2.0 mm (0.08 inch)

Outside diameter ... 67.5 mm (2.66 inch)

104-3288 Shim

Quantity ... 2

Thickness of one shim ... 0.05 mm (0.002 inch)

Outside diameter ... 67.5 mm (2.66 inch)

121-2059 Shim

Quantity ... 2

Thickness of one shim ... 0.08 mm (0.003 inch)

Outside diameter ... 67.5 mm (2.66 inch)

121-2060 Shim

Quantity ... 2

Thickness of one shim ... 0.18 mm (0.007 inch)

Outside diameter ... 67.5 mm (2.66 inch)

121-2061 Shim

Quantity ... 2

Thickness of one shim ... 0.60 mm (0.024 inch)

Outside diameter ... 67.5 mm (2.66 inch)

(4) Remove the plugs in order to check the end play of the bearings. Apply Loctite 648 to the outer circumference of the plugs.

(5) Torque for two plug assemblies ... 20 to 27 N·m (15 to 20 lb ft)

(6) Torque for the plug assembly ... 34 to 54 N·m (20 to 40 lb ft)

(7) Torque for 18 bolts ... 45 to 64 N·m (33 to 47 lb ft)

Illustration 2	g01619223
Section A-A

(8) Thickness of six new friction discs and six new clutch discs for the forward high clutch is 23.28 ± 0.78 mm (0.917 ± 0.031 inch).

Thickness of one new 6Y-7929 Friction Disc ... 2.05 ± 0.08 mm (0.081 ± 0.003 inch)

Minimum thickness of one worn 6Y-7929 Friction Disc ... 1.62 mm (0.064 inch)

Thickness of one new 274-4553 Clutch Disc ... 1.78 to 1.88 mm (0.070 to 0.074 inch)

(9) Thickness of five new friction discs and five new clutch discs for the forward low clutch is 19.40 ± 0.65 mm (0.764 ± 0.026 inch).

Thickness of one new 6Y-7929 Friction Disc ... 2.05 ± 0.08 mm (0.081 ± 0.003 inch)

Minimum thickness of one worn 6Y-7929 Friction Disc ... 1.62 mm (0.064 inch)

Thickness of one new 274-4553 Clutch Disc ... 1.78 to 1.88 mm (0.070 to 0.074 inch)

(10) Before assembly, apply 6V-6640 Sealant to the flange faces.

(11) Torque for two bolts ... 7 to 10 N·m (5.0 to 7.5 lb ft)

(12) As required, use the following shims in order to obtain a end play of 0.03 to 0.08 mm (0.001 to 0.003 inch):

Note: All the shims must be located against the bearing cup of the rear case. The 121-7398 Spacer must be in contact with the transmission case.

121-7398 Spacer

Quantity ... 1

Thickness of the spacer ... 2.0 mm (0.08 inch)

Outside diameter ... 79.5 mm (3.13 inch)

121-7399 Shim

Quantity ... 1

Thickness of the shim ... 0.05 mm (0.002 inch)

Outside diameter ... 79.5 mm (3.13 inch)

121-7400 Shim

Quantity ... 1

Thickness of the shim ... 0.08 mm (0.003 inch)

Outside diameter ... 79.5 mm (3.13 inch)

121-7401 Shim

Quantity ... 1

Thickness of the shim ... 0.18 mm (0.007 inch)

Outside diameter ... 79.5 mm (3.13 inch)

121-7402 Shim

Quantity ... 1

Thickness of the shim ... 0.60 mm (0.024 inch)

Outside diameter ... 79.5 mm (3.13 inch)

(13) Torque for the plug assembly ... 40 to 54 N·m (30 to 40 lb ft)

(14) Torque for four bolts ... 13 to 31 N·m (10 to 23 lb ft)

(15) Thickness of eight new friction discs and eight new clutch discs for the first speed clutch is 31.04 ± 1.04 mm (1.222 ± 0.041 inch).

Thickness of one new 6Y-7929 Friction Disc ... 2.05 ± 0.08 mm (0.081 ± 0.003 inch)

Minimum thickness of one worn 6Y-7929 Friction Disc ... 1.62 mm (0.064 inch)

Thickness of one new 274-4553 Clutch Disc ... 1.78 to 1.88 mm (0.070 to 0.074 inch)

(16) As required, use the following shims in order to obtain a end play of 0.03 to 0.08 mm (0.001 to 0.003 inch):

Note: All the shims must be located against the bearing cup of the rear case. The 7T-2646 Spacer must be in contact with the transmission case.

7T-2646 Spacer

Quantity ... 2

Thickness of one spacer ... 2.00 ± 0.02 mm (0.079 ± 0.001 inch)

Outside diameter ... 79.5 mm (3.13 inch)

6T-9166 Shim

Quantity ... 2

Thickness of one shim ... 0.051 mm (0.0020 inch)

Outside diameter ... 79.5 mm (3.13 inch)

6T-9165 Shim

Quantity ... 2

Thickness of one shim ... 0.076 mm (0.0030 inch)

Outside diameter ... 79.5 mm (3.13 inch)

6T-9164 Shim

Quantity ... 2

Thickness of one shim ... 0.178 mm (0.0070 inch)

Outside diameter ... 79.5 mm (3.13 inch)

6T-9163 Shim

Quantity ... 2

Thickness of one shim ... 0.599 mm (0.0236 inch)

Outside diameter ... 79.5 mm (3.13 inch)

(17) Torque for two bolts ... 68 to 88 N·m (50 to 65 lb ft)

(18) Apply 4C-9506 Retaining Compound over the output shaft in order to fix the gear.

(19) Thickness of eight new friction discs and eight new clutch discs for the second speed clutch is 31.04 ± 1.04 mm (1.222 ± 0.041 inch).

Thickness of one new 6Y-7929 Friction Disc ... 2.05 ± 0.08 mm (0.081 ± 0.003 inch)

Minimum thickness of one worn 6Y-7929 Friction Disc ... 1.62 mm (0.064 inch)

Thickness of one new 274-4553 Clutch Disc ... 1.78 to 1.88 mm (0.070 to 0.074 inch)

(20) Thickness of five new friction discs and five new clutch discs for the third speed clutch is 19.40 ± 0.65 mm (0.764 ± 0.026 inch).

Thickness of one new 6Y-7929 Friction Disc ... 2.05 ± 0.08 mm (0.081 ± 0.003 inch)

Minimum thickness of one worn 6Y-7929 Friction Disc ... 1.62 mm (0.064 inch)

Thickness of one new 274-4553 Clutch Disc ... 1.78 to 1.88 mm (0.070 to 0.074 inch)

(21) Thickness of eight new friction discs and eight new clutch discs for the all wheel drive clutch is 31.04 ± 1.04 mm (1.222 ± 0.041 inch).

Thickness of one new 6Y-7957 Friction Disc ... 2.05 ± 0.08 mm (0.081 ± 0.003 inch)

Minimum thickness of one worn 6Y-7957 Friction Disc ... 1.62 mm (0.064 inch)

Thickness of one new 274-4553 Clutch Disc ... 1.78 to 1.88 mm (0.070 to 0.074 inch)

(22) As required, use the following shims in order to obtain a end play of 0.03 to 0.08 mm (0.001 to 0.003 inch):

Note: All the shims must be located against the bearing cup of the rear case. The 122-1879 Spacer must be in contact with the transmission case.

122-1879 Spacer

Quantity ... 2

Thickness of one spacer ... 2.0 mm (0.08 inch)

Outside diameter ... 67.5 mm (2.66 inch)

104-3288 Shim

Quantity ... 2

Thickness of one shim ... 0.05 mm (0.002 inch)

Outside diameter ... 67.5 mm (2.66 inch)

121-2059 Shim

Quantity ... 2

Thickness of one shim ... 0.08 mm (0.003 inch)

Outside diameter ... 67.5 mm (2.66 inch)

121-2060 Shim

Quantity ... 2

Thickness of one shim ... 0.18 mm (0.007 inch)

Outside diameter ... 67.5 mm (2.66 inch)

121-2061 Shim

Quantity ... 2

Thickness of one shim ... 0.60 mm (0.024 inch)

Outside diameter ... 67.5 mm (2.66 inch)

(23) Torque for the bolt ... 30 to 40 N·m (20 to 30 lb ft)

Illustration 3	g01619225
Right side view

(24) Torque for the temperature sender assembly ... 15 to 24 N·m (11 to 18 lb ft)

(25) Torque for the relief valve group ... 23 to 30 N·m (17 to 22 lb ft)

(26) Torque for two plug assemblies ... 40 to 54 N·m (30 to 40 lb ft)

(27) Torque for three bolts ... 18 to 31 N·m (13 to 23 lb ft)

(28) Torque for the relief valve group ... 45 to 64 N·m (33 to 47 lb ft)

Illustration 4	g01619227
Top view

Note: Replace the plugs after installation.

(29) Torque for 12 bolts ... 7 to 9 N·m (5.0 to 6.3 lb ft)

(30) Torque for two bolts ... 45 to 64 N·m (33 to 47 lb ft)

(31) Remove the plug in order to check the end play of the bearing. Apply Loctite 648 to the outer circumference of the plug.