777F Off-Highway Truck Machine Systems Caterpillar

Front Wheel, Bearing and Duo-Cone Seal - Remove - Caliper Brakes

Usage:

777F JRP

Removal Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	-	Forcing Screws 3/8 inch by 16 NC	2
B	439-3941	Link Bracket	2
C	439-3938	Link Bracket	2
D	5B-4274	Bolt	2

Start By:

Release hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
Remove the front tire and rim. Refer to Disassembly and Assembly, "Tire and Rim (Front) - Remove and Install".

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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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat^® products. Dispose of all fluids according to local regulations and mandates.

Note: Cleanliness is an important factor. Before the removal 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 helps to prevent contaminants from entering the system.

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Illustration 1	g01332479

Position a suitable container under the front wheel assembly to collect hydraulic oil for storage or disposal. Remove drain plug (1). Drain the oil.
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Illustration 2 g01338172
Remove bolts (2).
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Illustration 3 g01332481
Install Tooling (A). Remove remaining bolts (2). If necessary, use two bolts (2) as pusher bolts to remove cover (3). Remove cover (3). Remove the O-ring seal from cover (3).
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Illustration 4 g01332483
Remove plugs (4).
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Illustration 5 g01332484
Install Tooling (D) to lock the brake.
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Illustration 6 g01332485
Attach Tooling (B) and a suitable lifting device to wheel (5). The weight of wheel (5) is approximately 445 kg (980 lb).
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Illustration 7 g01332486
Remove bolts (6). Remove retainer (7).
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Illustration 8 g01332643
Remove shim (8).
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Illustration 9 g01332646

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Illustration 10 g01332485
Remove bearing cone (9). Use Tooling (B) and the suitable lifting device to remove wheel (5). The weight of wheel (5) is approximately 445 kg (980 lb).
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Illustration 11 g01332654
Remove Duo-Cone seal (10).
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Remove Duo-Cone seal (11). Remove bearing cup (12).
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Illustration 13 g01332683
Remove bearing cup (13).
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Illustration 14 g01332688
Remove bearing cone (14).
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Illustration 15 g01332766
Remove Duo-Cone seal (15).
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Illustration 16 g01332768
Remove Duo-Cone seal (16).
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Illustration 17 g01332769
Attach Tooling (C) to retainer (17). Remove retainer (17).
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Illustration 18 g01332827
Remove O-ring seal (18).