PUMP GP-FUEL INJECTION 3937672 - Caterpillar

Remove ten bolts (7) and the washers that hold cover (8) to flywheel housing (9). Remove cover (8) from flywheel housing (9). Remove the gasket from cover (8) .
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Remove thrust washer (11). Remove 12 twelve point head bolts (12) that hold shaft (13) to gear (10). Remove shaft (13) from gear (10) .
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Remove gear (10) from the flywheel housing.
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Remove four bolts (14), the hard washers, and the sealing washers that hold bracket (15) and cage assembly (16) in position. Remove bracket (15) from the flywheel housing. Remove thrust washer (17) and cage assembly (16) from the flywheel housing.Installation Procedure
Note: Check all of the O-ring seals and the components for wear or for damage. Replace the components, if necessary. Lubricate all of the O-ring seals lightly with the lubricant that is being sealed. Clean all of the components with a cloth that is free of loose material (lint).
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Position cage assembly (16) and thrust washer (17) inside the flywheel housing, as shown. Position bracket (15) on the flywheel housing. Install four bolts (14), the sealing washers, and the hard washers that hold bracket (15) and cage assembly (16) in position.
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Lubricate the sleeve bearing in gear (10) and shaft (13) with clean engine oil. Position gear (10) in the flywheel housing. Install shaft (13) in gear (10) .
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Install 12 twelve point head bolts (12) that hold shaft (13) to gear (10). Tighten the bolts to a torque of 90 15 N m (66 11 ft). Position thrust washer (11) on shaft (13) .
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Install a new gasket on cover (8). Position cover (7) on flywheel housing (9). Install ten bolts (7) and the washers that hold cover (8) to flywheel housing (9) .
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Install O-ring seal (18) on adapter assembly (5). Position adapter assembly (5) on shaft (13). Install full nut (6) and the hard washer that holds adapter assembly (5) in position. Tighten the full nut to a torque of 65 10 N m (48 7 lb ft).
Install seal (3) and lip seal (4) in adapter assembly (5), as shown. Make sure that the seals are seated correctly.
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Note: The torque converter has been removed for photographic reasons.
Position yoke (2) on the shaft of the accessory drive. Make sure that the mating surfaces of locknut (1) and the shaft are clean. Install locknut (1) and the hard washer that holds yoke (2) to the shaft. Tighten the locknut to a torque of 650 50 N m (479 37 lb ft).End By: Install the pump drive shaft. Refer to Disassembly and Assembly, "Pump Drive Shaft - Remove and Install" for the Machine Systems.