D6K Track-Type Tractor Electrohydraulic Power Train Caterpillar

Brake and Final Drive Group

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Illustration 1	g03422547

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Table 1
Specification for 239-1245 Final Drive and Parking Brake Gp and 239-1244 Final Drive and Parking Brake Gp
Item	Qty	Part	Specification Description
Low Ground Pressure (LGP) machines have an inner hub that is wider than the hub on the standard machines. Both machines have the same specifications and the same installation procedure
1	Each side has four friction discs and three parking brake plates. Before assembly, dip the parts in the SAE 30 oil. Thickness of four new friction discs and three new parking brake plates for the brake is 22.90 ± 0.87 mm (0.902 ± 0.034 inch).
	4	170-8714 Friction Disc	Thickness of one new friction disc is 4.00 ± 0.12 mm (0.157 ± 0.005 inch).
	3	3W-5159 Parking Brake Plate	Thickness of one new parking brake plate is 2.30 ± 0.13 mm (0.091 ± 0.005 inch).
2	2	5F-0585 Bearing Cone	The bearing cone may be frozen in order to aid installation. Heat the bearing cone to 120°C (248°F) for a maximum of eight hours. After the assembly has cooled, position and install the bearing cone squarely against the locating shoulder.
3	2	5F-0589 Bearing Cup	Before installation, lubricate the bearing surfaces with SAE 30 oil.
4	3	287-3585 Bolt	Torque to 570 ± 80 N·m (420 ± 59 lb ft).
5	3	6V-0439 Magnetic Plug	Torque to 105 ± 10 N·m (77 ± 7 lb ft).
6	2	2K-2939 O-Ring Seal	Lubricate the bore lightly with the lubricant that is being sealed.
7	2	5S-3676 O-Ring Seal	Lubricate the bore lightly with the lubricant that is being sealed.
8	9	6V-3823 Bolt	Procedure for Preloading the Sprocket Bearings: 1. The parts must be clean and free of dirt. Lubricate bearings with SAE 30 oil. 2. Continuously rotate sprocket hub (B) . 3. Seat bearings against plate (C) . Gradually apply an axial load of 120000 ± 10000 N (27000 ± 2250 lb). 4. Tighten three equally spaced bolts (8) with an axial load against plate (C) to 95 ± 10 N·m (70 ± 7 lb ft). 5. Remove the axial load from plate (C) . 6. Tighten all bolts (8) to 120 ± 20 N·m (88 ± 15 lb ft).
9	1	2H-6489 Bearing Outer Race	Before installation, lubricate with SAE 30 oil. The bearing may be frozen in order to aid installation. Heat the bearing to 120 °C (248 °F) for a maximum of eight hours. After the assembly has cooled, position and install the bearing squarely against the locating shoulder.
10	1	6Y-0859 Duo-Cone Seal Gp	All the surfaces that are contacting the rubber toric seals must be clean and dry at assembly. Before assembly, apply a thin film of oil to the contacting surfaces of the metal seal rings. The seal rings must be assembled square with the bore and with the toric seal. The seal rings must not have bulges or twists. Refer to Special Instruction, SEHS8364, "Assembly and Installation of Conventional Duo-Cone Seals" for installation instructions.
11	1	5P-9147 O-Ring Seal	Lubricate the bore lightly with the lubricant that is being sealed.
12	1	7D-7519 O-Ring Seal	Lubricate the bore lightly with the lubricant that is being sealed.
13	2	6V-0328 Bearing Cone	Before installation, lubricate the bearing surfaces with SAE 30 oil. The bearing cone may be frozen in order to aid installation. Heat the bearing cone o 120 °C (248 °F) for a maximum of eight hours. After the assembly has cooled, position and install the bearing cone squarely against the locating shoulder.
14	6	1B-3980 Bearing Cone	Before installation, lubricate the bearing surfaces with SAE 30 oil.
-	-	-	The brake assembly must be disengaged in order to allow the carrier assembly to rotate freely. Maximum rate of rotation by the carrier assembly is 1380 kPa (200 psi).
-	-	-	The brake assembly must begin to engage so that the carrier assembly cannot rotate at the minimum rate. Minimum rate of rotation is 1140 kPa (165 psi).
-	-	-	When the brake assembly is fully engaged, the carrier assembly cannot be allowed to rotate at a certain torque. This torque is applied at the input pinion. Torque that is applied at the input pinion is 950 N·m (701 lb ft).