PUMP GP-GEAR 4973513 - Caterpillar

Start By:a. disassemble governorb. remove fuel injection pumps Fluid Spillage ContainmentCare must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to "Tools and Shop Products Guide", NENG2500 for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose fluids according to local regulations and mandates. 1. Remove cover (1) and gasket from the fuel injection pump housing. 2. Remove rack (2) from the fuel injection pump housing.
If the original lifters are to be installed in the fuel injection pump housing, put identification marks on them as to their location in the housing.
3. Remove lifters (3) from the fuel injection pump housing. 4. Put the fuel injection pump housing on end on blocks, and use Tool (A) to remove snap ring (4) from the camshaft. 5. Use a soft hammer to push the camshaft toward the governor end of the fuel injection pump housing to loosen washer (5) on the camshaft. Remove washer (5). 6. Remove camshaft (6) from the fuel injection pump housing. 7. Remove bearings (7) from the drive end of the fuel injection pump housing. 8. Remove bearings (8) from the governor end of the fuel injection pump housing.Assemble Fuel Injection Pump Housing
Be sure all oil passages are clear, and put clean oil on all parts before assembly. 1. Use Tooling (B) to install bearing (10) in the governor end of the fuel injection pump housing with junction (joint) (11) toward the top of the fuel injection pump housing. Install the bearing so it is 0.25 0.20 mm (.100 .008 in) below the surface of the housing.2. Use Tooling (B) to install bearing (9) in the governor end of the fuel injection pump housing so it is 7.16 0.13 mm (.282 .005 in) below the surface of the housing. 3. Use Tooling (B) to install bearing (12) in the drive end of the fuel injection pump housing with the junction (joint) in the bearing toward the top of the fuel injection pump housing. Install the bearing so it is 1.00 0.25 mm (9.039 .010 in) below the surface of the housing. 4. Install plate (13) of Tooling (C) on the drive end of the fuel injection pump housing to install the bearing for the rack. Use clean grease to hold the new rack bearing on driver (14) of Tooling (C). Install the driver and bearing in plate (13) with the groove in the driver in alignment with the pin in the plate and use a hammer to push the bearing into position. The bearing will be installed to the correct depth when the shoulder of the driver is against plate (13).5. Remove Tooling (C) from the fuel injection pump housing. The rack bearing must be installed so it is 0.25 0.25