BUCKET & ADJUSTER GP 5411751 - Caterpillar

Start By:a. remove timing gear coverb. remove valve lifters 1. Turn the engine to top center compression stroke for the No.1 piston.2. Remove four bolts (2) and plate (1) that holds the idler gear in place.3. Remove idler gear (3). 4. Remove two bolts (4) and retainer (5) that holds the camshaft to the cylinder block.5. Carefully remove the camshaft assembly from the cylinder block. 6. Remove camshaft gear (6) from the camshaft with tooling (A). The following steps are for the installation of the camshaft. 7. Heat camshaft gear (6) to a maximum temperature of 315°C (600°F).8. Put the key in the camshaft in alignment with the groove (keyway) in gear (6). Install gear (6) on the camshaft.9. Put clean engine oil on the lobes and journals of the camshaft.10. Carefully install the camshaft assembly in the cylinder block.11. Install the retainer that holds the camshaft in the cylinder block.12. Install idler gear (3) on its shaft. Be sure the "V" mark on the idler gear (3) is in alignment with the "B" mark on the crankshaft gear. The "K" marks on the camshaft gear can be seen at the edge of the idler gear. It will be necessary to check the timing of the governor and fuel pump drive. See the topic, Camshaft Timing For Fuel Injection Pump, in Testing And Adjusting.End By:a. install timing gear coverb. install valve lifters