966H and 972H Wheel Loaders PowerTrain Caterpillar

Axle Housing - Assemble

Usage:

966H BJ6

Specifications

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Illustration 1	g03355092
Typical example

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Table 1
Specification for 368-9932 Axle Housing Gp and 368-9928 Axle Housing Gp
Item	Qty	Part	Specification Description
Before assembly, apply blue Loctite High Flex GM to the mating surfaces.
1	10	6V-5686 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
2	1	8R-0512 Oil Level Gauge As	Torque to 45 ± 6 N·m (33 ± 4 lb ft).
3	24	8T-0207 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
4	2	5H-3701 Purge Screw	Torque to 11 ± 4 N·m (97 ± 35 lb in).
5	1	8T-0336 Pressure Relief Fitting	Torque to 13 ± 4 N·m (115 ± 35 lb in).
6	24	9X-2075 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
7	1	3B-0551 Pipe Plug	Torque to 45 ± 6 N·m (33 ± 4 lb ft).
8	1	173-0566 Ecology Drain Gp	Torque to the assembly 130 ± 10 N·m (96 ± 7 lb ft).
9	1	175-4966 Drain Plug	Torque to the plug 65 ± 6 N·m (48 ± 4 lb ft). 3/4 inch pipe can be used to active the valve.
10	1	165-4929 Plug As	Torque to 210 to 231 N·m (155 to 170 lb ft).

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Illustration 2	g03358797
Typical example

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Table 2
Specification for 251-4524 Fixed Axle Housing Gp and 129-4291 Fixed Axle Housing
Item	Qty	Part	Specification Description
Apply blue Loctite High Flex GM to the mating surfaces.
1	10	6V-5686 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
2	1	8R-0512 Oil Level Gauge As	Torque to 45 ± 6 N·m (33 ± 4 lb ft).
3	24	8T-0207 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
4	2	5H-3701 Purge Screw	Torque to 11 ± 4 N·m (97 ± 35 lb in).
5	1	8T-0336 Pressure Relief Fitting	Torque to 13 ± 4 N·m (115 ± 35 lb in).
6	24	9X-2075 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
7	1	3B-0551 Pipe Plug	Torque to 45 ± 6 N·m (33 ± 4 lb ft).

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Illustration 3	g03357681

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Table 3
Specification for 129-4293 Oscillating Axle Housing Gp
Item	Qty	Part	Specification Description
Apply blue Loctite High Flex GM to the mating surfaces.
1	2	5H-3701 Purge Screw	Torque to 11 ± 4 N·m (97 ± 35 lb in).
2	1	8T-0336 Pressure Relief Fitting	Torque to 13 ± 4 N·m (115 ± 35 lb in).
3	1	148-8406 Plug As	Torque to 210 ± 231 N·m (155 ± 170 lb ft).
4	1	165-4929 Plug As	Torque to 210 ± 231 N·m (155 ± 170 lb ft).
5	26	6V-8648 Connector	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
6	4	6C-8648 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).

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Illustration 4	g03357696
View A-A

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Table 4
Item	Qty	Part	Specification Description
7	1	9C-9191 Trunnion	Outside diameter of the trunnion 126.80 ± 0.08 mm (4.992 ± 0.003 inch).
8	1	213-1370 Bushing	Inside diameter of the sleeve bearing 127.50 mm (5.020 inch).
8	1	213-1370 Bushing	Outside diameter of the sleeve bearing 140.20 ± 0.08 mm (5.519 ± 0.003 inch).
9	1	155-6456 Trunnion Support	Inside diameter of the trunnion support 139.75 ± 0.05 mm (5.502 ± 0.002 inch).
10	1	3B-0551 Pipe Plug	Torque to 45 ± 6 N·m (33 ± 4 lb ft).
11	4	6V-3531 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
12	24	8T-0207 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
13	1	8R-0512 Oil Level Gauge As	Torque to 45 ± 6 N·m (33 ± 4 lb ft).
14	1	130-8706 Pinion Housing	Outside diameter of the pinion housing 220.00 ± 0.08 mm (8.661 ± 0.003 inch).
15	1	213-1366 Bushing	Inside diameter of the sleeve bearing 220.72 mm (8.689 inch).
15	1	213-1366 Bushing	Outside diameter of the sleeve bearing 235.98 ± 0.08 mm (9.290 ± 0.003 inch).
16	1	129-5398 Trunnion Support	Inside diameter of the trunnion support 235.50 mm (9.272 inch).

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Illustration 5	g03357649

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Table 5
Specification for 368-9935 Oscillating Axle Housing Gp
Item	Qty	Part	Specification Description
Apply blue Loctite High Flex GM to the mating surfaces.
1	2	5H-3701 Purge Screw	Torque to 11 ± 4 N·m (97 ± 35 lb in).
2	1	8T-0336 Pressure Relief Fitting	Torque to 13 ± 4 N·m (115 ± 35 lb in).
3	1	173-0566 Ecology Drain Gp	Torque to 130 ± 10 N·m (96 ± 7 lb ft).
4	1	175-4966 Drain Plug	Torque to 65 ± 6 N·m (48 ± 4 lb ft). 3/4 inch pipe can be used to active the valve for draining.
5	1	165-4929 Plug As	Torque to 210 to 231 N·m (155 to 170 lb ft).
6	26	6V-5686 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
7	4	6C-8648 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).

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Illustration 6	g03357650
View A-A

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Table 6
Item	Qty	Part	Specification Description
8	1	3B-0551 Pipe Plug	Torque to 45 ± 6 N·m (33 ± 4 lb ft).
9	4	6V-3531 Bolt	Torque to 570 ± 80 N·m (420 ± 59 lb ft).
10	24	6C-5304 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
11	24	6C-5303 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
12	1	8R-0512 Oil Level Gauge As	Torque to 45 ± 6 N·m (33 ± 4 lb ft).

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Illustration 7	g03355571

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Table 7
Specification for 368-9936 Axle Housing Gp
Item	Qty	Part	Specification Description
Apply blue Loctite High Flex GM to the mating surfaces.
1	2	5H-3701 Purge Screw	Torque to 11 ± 4 N·m (97 ± 35 lb in).
2	1	8T-0336 Pressure Relief Fitting	Torque to 13 ± 4 N·m (115 ± 35 lb in).
3	1	173-0566 Ecology Drain Gp	Torque to 130 ± 10 N·m (96 ± 7 lb ft).
4	1	175-4966 Drain Plug	Torque to 65 ± 6 N·m (48 ± 4 lb ft). 3/4 inch pipe can be used to active the valve for draining.
5	1	165-4929 Plug As	Torque to 210 to 231 N·m (155 to 170 lb ft).
6	26	6V-5686 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
7	4	6C-8648 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).

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Illustration 8	g03355574
View A-A

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Table 8
Item	Qty	Part	Specification Description
8	1	3B-0551 Pipe Plug	Torque to 45 ± 6 N·m (33 ± 4 lb ft).
9	4	6V-3531 Bolt	Torque to 570 ± 80 N·m (420 ± 59 lb ft).
10	24	8T-0207 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
11	24	9X-2075 Bolt	Torque to 300 ± 40 N·m (221 ± 30 lb ft).
12	1	8R-0512 Oil Level Gauge As	Torque to 45 ± 6 N·m (33 ± 4 lb ft).

Assembly Procedure

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Table 9
Required Tools
Tool	Part Number	Part Description	Qty
A	138-7573	Link Bracket	2
B	1P-2420	Transmission Repair Stand	1
	FT-0996	Positioning Gp (Axle Repair)	4
	FT-0957	Positioning Gp (Axle Repair)	4
C	1P-1863	Retaining Ring Pliers	1
D	138-7575	Link Bracket	3
E	6V-7820	Torque Multiplier Gp	1
E	4C-8500	Spanner Wrench As	1
G	1U-6436	Duo-Cone Seal Installer	1
H	FT-2619	Rolling Torque Bar	1
J	-	Loctite Hi-Temp Flange Sealant	-

Note: The axle housing assemblies that are used in the fixed axle and in the oscillating axle are similar. Therefore, both axle assemblies can be assembled in the same manner.

Note: Cleanliness is an important factor. Before assembly, thoroughly clean all parts in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement.

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Illustration 9	g01159147

Fasten the axle shaft to Tooling (B), as shown.

Raise the temperature of bearing cone (16) and install bearing cone (16) onto axle shaft (4) .
Note: The bearing cone must be seated against the shoulder on the axle shaft. Allow the bearing cone and the axle to reach a uniform temperature. Use a suitable driver or a press in order to reset the bearing cone ensuring that the bearing cone is seated properly.

Note: Make sure that the rubber seals and all surfaces that contact the seals are clean and dry. After installation of the seals, apply clean SAE 30 oil on the contact surfaces of the metal seals and bearing cone (16) .

Use Tooling (G) in order to install the Duo-Cone seal (17) on axle shaft (4). Refer to Disassembly and Assembly, "Duo-Cone Conventional Seals - Install".

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Illustration 10	g01159114

Lower the temperature of bearing cups (13) and (14) and install bearing cups (13) and (14) in the ends of the axle housing (2). The bearing cups must be seated against the shoulder of the mating surface.
Note: Allow bearing cups (13) and (14) and axle housing (2) to reach a uniform temperature. Use a suitable driver or press in order to reset bearing cups (13) and (14). This will ensure that bearing cups (13) and (14) are seated properly.

Use Tooling (G) in order to install Duo-Cone seal (15) in the end of the axle housing. Refer to Disassembly and Assembly, "Duo-Cone Conventional Seals - Install".

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Illustration 11	g01159115

Use Tooling (A) and a suitable lifting device to position axle housing (2) over the axle shaft, as shown. The weight of axle housing (2) is approximately 136 kg (300 lb).

Raise the temperature of bearing cone (12) .

Install bearing cone (12) on the axle shaft so that there is slight end play. When bearing cone (12) is cool, apply clean SAE 30 oil to the bearing cone.

Note: Bearing nut (11) must be installed so that the part number is facing away from bearing cone (12) .

Apply clean SAE 30 oil on bearing nut (11) and install bearing nut (11) on the axle shaft. Tighten the nut until a small amount of end play remains.

The seal drag torque is the torque that is needed to rotate the axle housing. Use one of the following methods to measure the seal drag torque:
1. To measure seal drag torque, install Tooling (H) on the axle housing. Place a torque wrench on the bolt at the center of the bar. Use the torque wrench in order to rotate the housing. Record the reading of the torque wrench. The reading on the torque wrench is the seal drag torque.
1. To measure seal drag torque, install a bolt and a nut through an outer mounting hole on the axle housing. Install a torque wrench on the bolt. Make sure that the handle is aligned with the center of the axle shaft. Use the torque wrench in order to rotate the housing. Record the reading on the torque wrench. Use the following formula in order to calculate the actual seal drag torque:
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  Table 10
  "SDT =" C × (B + A)
  
  B
  
  "SDT" is the actual seal drag torque in newton meters (N·m).
  "C" is the torque wrench reading in newton meters (N·m).
  "B" is the length of the torque wrench in meters.
  "A" is the bolt circle radius of axle housing assembly (2) in meters. This is equal to 0.229 m (9.0160 inch).

Table 10
	"SDT ="	C × (B + A)
B

Tighten nut (11) by using one of the following methods:
1. Rotate the axle housing assembly. Use Tooling (E) in order to tighten bearing nut (11). Install Tooling (H) on the axle housing. Place a torque wrench on the bolt at the center of Tooling (H). The torque wrench reading is equal to the seal drag torque plus the axle bearing preload rolling torque. Use the seal drag torque that was recorded in Step 10.
  Note: The preload rolling torque for new bearings is 9 to 16 N·m (80 to 142 lb in). The preload rolling torque for used bearings is 4.5 to 8 N·m (40 to 71 lb in).
1. Use the torque wrench in order to rotate the axle housing assembly. Use Tooling (E) in order to tighten nut (11). The torque wrench reading must equal the axle bearing preload rolling torque plus the actual seal drag torque. Use the seal drag torque that was recorded in Step 10. Use the following formula to calculate the required torque wrench reading. This formula is used to measure torque at the bolt circle.
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  Table 11
  "C =" B × (T + SDT)
  
  B + A
  
  "C" is the torque wrench reading in newton meters (N·m).
  "B" is the length of the torque wrench in meters.
  "A" is the bolt circle radius of axle housing assembly (2) in meters. This equals 0.229 m (9.0160 inch).
  "SDT" is the actual seal drag torque in newton meters (N·m).
  "T" is the axle bearing preload rolling torque. The preload rolling torque for new bearings is 9 to 16 N·m (7 to 12 lb ft). The preload rolling torque for used bearings is 4.5 to 8 N·m (3.5 to 6 lb ft).

Table 11
	"C ="	B × (T + SDT)
B + A

The axle shaft should have zero end play. If the axle bearing preload rolling torque exceeds the specification, back off bearing nut (11) by 1/8 turn and reseat bearing cone (12) against bearing nut (11). Perform Step 11 again.

The following steps are for the assembly of planetary carrier assembly (5) :
1. Install retaining ring (3) in the carrier.
1. Apply a thin coat of clean SAE 30 oil on all parts of planetary carrier assembly (5) .
1. Install bearing (10) in planetary gear (9) .
1. Install thrust washers (8) and planetary gear (9) in planetary carrier assembly (5) .
1. Install shaft (7) in the carrier. Make sure that the spring pin hole in the shaft is aligned with the spring pin hole in the carrier. Install a new spring pin (6) through the carrier and in shaft (7). Install spring pin (6) slightly below the outside surface of the carrier.
1. Repeat Steps 13.a through 13.e for the remaining two planetary gears.

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Illustration 16	g01159051

Use Tooling (D) and a suitable lifting device to position planetary carrier assembly (5) into the axle housing assembly. The weight of planetary carrier assembly (5) is approximately 80 kg (175 lb).

Use Tooling (C) in order to install retaining ring (3) on axle shaft (4) .

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Illustration 17	g01159049

Remove axle housing assembly (2) from Tooling (B). Install the other half of the axle housing assembly on Tooling (B) in a vertical position.

Apply Tooling (J) on the mating surfaces of axle housing assembly (2) and of the differential housing.

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Illustration 18	g01159047

Use Tooling (A) and a suitable lifting device to position axle housing assembly (2) onto the differential housing, as shown. The weight of axle housing assembly (2) is approximately 365 kg (800 lb).