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Disassembly and Assembly 784C, 785C and 785C HAA Off-Highway Truck/Tractors Power Train

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Disassembly and Assembly 784C, 785C and 785C HAA Off-Highway Truck/Tractors Power Train

Media Number -

Publication Date -01/08/2004

Date Updated -12/08/2004

Differential and Bevel Gear - Disassemble

SMCS - ;

Начало формы

Disassembly Procedure

Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	FT-2392	Adjusting Nut	1
B	FT-2391	Adjusting Nut	1
C	5P-1730	Holding Fixture	1
D	1P-0510	Driver Group	1
E	1P-0520	Driver Group	1
F	1H-3110	Bearing Puller	1
F	1H-3107	Push Puller	1

Start By:

Remove the differential and bevel gear. Refer to Disassembly and Assembly, "Differential and Bevel Gear - Remove".

NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.

Dispose of all fluids according to local regulations and mandates.

Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.

Note: Put identification marks on all hose assemblies and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss and this helps to prevent contaminants from entering the system.


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Illustration 1	g00567241

Use a suitable hoist in order to place differential carrier assembly (1) on the fixture. The weight of differential carrier assembly (1) is 862 kg (1900 lb).


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Illustration 2	g00565118

Remove two bolts (4) and the washers. Remove four twelve point head bolts (2) and the washers. Remove tube assembly (3) and seals from differential carrier assembly (1) .


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Illustration 3	g00565115

Remove four twelve point head bolts (5) and the washers. Remove tube assembly (6) and seals from differential carrier assembly (1) .


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Illustration 4	g00564797

Remove four bolts (8) and the washers. Remove gear pump assembly (7) .


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Illustration 5	g00564759

Remove cotter pin (66). Remove slotted nut (64) and the washer from gear pump assembly (7). Remove gear (65). Remove key (76) (not shown) from the slot on the gear pump shaft.