Usage:
Start By:
a. remove timing gear cover
b. remove valve lifters
FLUID SPILLAGE CONTAINMENT
Care 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 PRODUCT GUIDE, NENG2500", for tools and supplies suitable to collect and contain fluids in Caterpillar machines. Dispose fluids according to local regulations and mandates.
1. Turn the engine to top center compression stroke for the No. 1 piston.
2. Remove four bolts (2) and plate (1) that hold the idler gear in place.
3. Remove idler gear (3).
4. Remove two bolts (4) and retainer (5) that hold 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).
Install Camshaft
1. Heat camshaft gear (1) to a maximum temperature of 315°C (600°F).
2. Put the key in the camshaft in alignment with the groove (keyway) in gear (1). Install gear (1) on the camshaft.
3. Put clean engine oil on the lobes and journals of the camshaft.
4. Carefully install camshaft assembly (2) in the cylinder block.
5. Install the retainer that holds the camshaft in the cylinder block.
6. Install idler gear (3) on its shaft. Be sure the "V" mark on idler gear (3) is in alignment with the "V" mark on the crankshaft gear. The "K" marks on the camshaft gear can be seen at the edge of the idler gear.
7. Install plate (4) and the bolts that hold the idler gear in place.
NOTE: 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 Systems Operation Testing & Adjusting Manual.
End By:
a. install valve lifters
b. install timing gear cover