09450-02910 PUMP ASSY, INJECTI Calibration Data

Introduction
This Special Instruction gives detailed instructions on the disassembly and assembly of the 144-0835 Unit Injector Hydraulic Pump . The 144-0835 Unit Injector Hydraulic Pump was not previously serviceable. The pump will have a kit that will contain serviceable parts. The rear bearing and the bearing kits for the pump will be serviceable on an individual basis.Note: This instruction should also be used when you are servicing the former 134-9405 Unit Injector Hydraulic Pump .Serviceable Parts
154-6732 Fuel Injection Pump Kit
Control Piston
Shaft
Yoke
Seal Kit
Front Bearing
Rotating Group
154-6734 Bearing
154-6735 Bearing Kit Required Tools
Contact the Caterpillar Dealer for the dimensions and specifications that are needed in order to fabricate the tools.
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FT-2606 Yoke Fixture
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Two FT-2607 Bearing Installation Tools
Illustration 3 g00295535
FT-2608 Bearing Installation Tool
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FT-2609 Valve Block Positioner
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FT-2610 Driver Tube
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FT-2611 Bearing Support
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FT-2612 Bearing Removal Tool Disassembly Of The 144-0835 Unit Injector Hydraulic Pump
Start by removing the 128-3552 Unit Injection Hydraulic Pump and Mounting Gp from the engine.Reference: Consult the Service Manual, SENR1063 for additional information.Note: Do not disconnect the fuel transfer pump from the 128-3552 Unit Injection Hydraulic Pump and Mounting Gp before servicing. The coupling between the two pumps will be used later.
Illustration 8 g00295292
(1) Fuel Transfer Pump. (2) Bolts.
Remove the four bolts (2) from the fuel transfer pump (1). Remove the fuel transfer pump (1) .
Illustration 9 g00295294
(3) Compensator. (4) Bolt.
Remove the four bolts (4) from the compensator (3). Remove the compensator (3) and the adapter. Do not adjust the compensator (3) .
Illustration 10 g00295295