TRIM GP-CAB 3988844 - Caterpillar

start by:a) remove flywheel housing1. Be sure the No. 1 piston is at top center on the compression stroke. See TIMING THE CAMSHAFT FOR THE FUEL INJECTION PUMPS in TESTING AND ADJUSTING. 2. On G379 only, remove the seal ring (1) and spring from thrower. 3. Install tooling (A) on thrower. If necessary use heat on the outer diameter of thrower with an open flame at a maximum temperature of 400°F (204°C). Remove the thrower (2) immediately with tooling (A). 4. Bend the tabs on locks and remove bolts (3) that hold the large camshaft gear to small camshaft gear. Remove gear (4).
Do not turn the crankshaft with large camshaft gear removed and the camshaft installed.
5. Remove bolts (6) and lock that hold the thrust washer (5) to the camshaft. 6. Turn gear (8) for bolt access and remove bolts and lock that hold washer assembly to the cylinder block. Remove washer assembly (7). 7. Remove camshaft gear (8) from camshaft with tooling (B). 8. Remove bolts, lock and retainer that hold the balancer gear on its shaft. Remove rear balancer gear (9). Remove bearing from balancer gear. 9. Remove thrust washer (10) on the balancer gear shaft.Install Rear Timing Gears
1. On G379 only, use tooling (A) to install the bearing in balancer gear. Be sure No. 1 piston is at top center on the compression stroke. See TIMING THE CAMSHAFT FOR THE FUEL INJECTION PUMPS in TESTING AND ADJUSTING. 2. Install thrust washer (1) and balancer gear (2) on shaft. 3. Install small camshaft gear (3), washer assembly (4), lock and bolts. Install retainer. Tighten bolts to a torque of 60 to 70 lb.ft. (80 to 95 N m). 4. Put a mark with chalk on the camshaft gear at the location of timing mark "C". Put a mark with chalk on the tooth of crankshaft gear with punch marks. The back of gears can be marked so the marks can be seen with a mirror (5) after installation. 5. Install large camshaft gear (6). Be sure the "C" mark on gear is in alignment with punch mark on crankshaft gear. On G379 only, move large camshaft gear out enough to turn the balancer gear until "A" marks are in alignment.6. Put large camshaft gear in position on the dowel on small camshaft gear. Install locks and bolts. 7. Heat thrower (7) to a maximum temperature of 400 - 450°F (204 - 232°C). Install thrower (7) on crankshaft. 8. Use tooling (B) to install thrower in correct location on crankshaft.
Do not install a used oil thrower, seal ring or spring.
9. With the thrower at room temperature, put 6V2055 High Vacuum Grease in the groove for the seal ring at assembly one half or more of the depth of the groove. 10. Install the spring and seal ring (8) on thrower with the word "OUT" on the seal ring installed away from the crankshaft. Put the gap of seal ring to top of crankshaft when installed.end by:a) install flywheel housing