SPRING 7F7779 - Caterpillar

Remove Camshaft
Start By:a. remove timing gear coverb. remove valve lifters and push rods 1. Disconnect oil line (2) from the bottom of the turbocharger.2. Remove oil line (2) and elbow (1) from the flywheel housing. 3. Remove studs (3) that hold elbow (1) on the flywheel housing. 4. Use tool (A) to turn the flywheel enough so that three of four bolts (4) can be removed from the rear camshaft gear. Install tooling (B) as shown. Remove the last bolt that holds the rear camshaft gear in place on the camshaft. Tighten tooling (B) to disconnect the rear camshaft gear from the camshaft. 5. Remove two bolts (5) and plate (6) that holds the camshaft in position in the cylinder block. 6. Remove camshaft (7) from the engine. 7. Use tooling (C) and a press to remove front camshaft gear (8) from the camshaft.Install Camshaft
Make sure the key for gear (1) is in position on camshaft (2) before gear (1) is installed.1. Heat gear (1) to a maximum temperature of 315° C (600° F). Install gear (1) on camshaft (2). Step 2 is for 3408 engines only. The 3412 engines do not have pin (3).2. Install pin (3). Install the pin so it extends 8.76 0.25 mm (.345 .010 in.) above the surface.
Do not let 2P2506 Anti-Seize Compound get on the bearing journals of the camshaft.
3. Put 2P2506 Anti-Seize Compound on the lobes of camshaft (2). Put clean engine oil on the camshaft journals. 4. Turn the crankshaft so that the "V" mark on idler gear (4) is toward the bore for the camshaft.5. Install camshaft (2) in the engine. 6. Make sure "V" mark (5) on the camshaft gear is in alignment with "V" mark (6) on the idler gear. 7. Install plate (7) and the two that hold the camshaft in position in the engine. Steps 8 through 12 are for 3412 engines only.8. Use tool (B), if necessary, to put the bolt holes in the rear camshaft gear in alignment with the holes in the camshaft.9. Install one bolt (8) to hold the rear camshaft gear on the camshaft. Remove tooling (A). Tighten bolt (8) to a torque of 27 4 N m (20 3 lb.ft.).10. Use tool (B) to turn the flywheel so the three other bolts can be installed in the rear camshaft gear. Tighten these bolts to a torque of 27 4 N m (20 3 lb.ft.). 11. Put 9S3263 Thread Lock on two studs (9). Install the two studs in the flywheel housing. 12. Make sure the gasket is in position between oil line (11) and the bottom of the turbocharger. Make sure the gasket is in position between elbow (10) and the flywheel housing. Install oil line (11) and elbow (10).End By:a. install valve lifters and push rodsb. install timing gear cover