PUMP GP-GEAR 4973512 - Caterpillar

Start By:a. remove governor **See Governor, Disassemble & Assemble 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 the bolts and the plate from side of the fuel injection pump housing.2. Install Tool (A) in the fuel injection pump housing. Move the rack until Tool (A) can be installed to hold the rack in the center position. The rack must be in the center position to remove the fuel injection pumps.3. Use Tool (B) to remove bushing (1) from the fuel injection pump housing.4. Remove the O-ring seal from the fuel injection pump housing. 5. Install Tool (C) on the bonnet and remove the fuel injection pump. 6. Remove spacer (2) from the fuel injection pump housing. Spacers (2) are the same thickness for each fuel injection pump so they can be mixed. The fuel injection pump plungers and barrels are in sets and can not be mixed.7. Do Steps 3 through 6 to remove the other fuel injection pumps.Install Fuel Injection Pumps
1. Installer spacer (2) in the fuel injection pump housing. 2. Install Tool (A) in the fuel injection pump housing. Move the rack until Tool (A) can be installed to hold the rack in the center position. The rack must be in the center position to install the fuel injection pumps.3. Turn camshaft until the lobe of the camshaft is down for the pump to be installed.4. Install Tool (C) on the bonnet of the fuel injection pump. 5. Install the fuel injection pump in the pump housing with saw cut (slot) (4) in the gear in alignment with the small pin (3), and groove (5) in the barrel in alignment with dowel (6) in the pump housing.6. Put clean oil on the O-ring seal and install it in the fuel injection pump housing.7. Install the bushing by hand until the bushing is even with the top of the housing. If the bushing can not be installed this far by hand, remove it. Remove the fuel injection pump and put the pump in alignment again and install the bushing again. 8. Install Tool (B) on the bushing and tighten the bushing to a torque of 190 14 N m (140 10 lb ft). 9. Install Tooling (D) to measure total rack travel. Correct rack travel is 15.70 mm (.618 in). A smaller measurement is an indication of wrong fuel injection pump installation.10. Do Steps 1 through 9 again for installation of the other fuel pumps.11. Install the cover and gasket on the fuel injection pump housing.End By:a. install governor **See Governor, Disassemble & AssembleDisassemble & Assemble Fuel Injection Pumps
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