CAP 7J6657 - Caterpillar

Remove Camshafts
start by:a) remove rocker shafts and push rodsb) remove crankcase breathers (left side only)c) remove hydramechanical shutoff drive (right side only)d) remove governor (right side only) 1. Remove access covers (1) from the sides of the engine. 2. Remove bolt (3) and cap (4) that hold fuel rod assembly (2) to the fuel control shaft. 3. Remove bolts (5) to remove lever assembly (6) and fuel rod assembly (2) as a unit from the cylinder heads. If necessary, use tool (A) to turn the flywheel until the camshaft is moved in a position so that the fuel rod assembly can be removed between the engine block and camshaft. 4. Remove cover (7) from the left side of the flywheel housing. 5. Remove the bolts and remove plate (8) from the end of the camshaft on the left side of the engine. 6. Use tooling (B) to remove drive gear (9) from the end of the camshaft on each side of the engine. Remove the drive gears from the flywheel housing. 7. Remove the bolts and remove washer (10) from the end of the camshaft on each side of the engine. 8. Push valve lifters (11) up away from the camshaft into the cylinder heads and hold the lifters in this position. An O-ring seal can be used to hold the valve lifters up. 9. Install the pilot assembly part of tool group (C) on one end of the camshaft. 10. Install the handle part of tool group (C) on the other end of the camshaft. 11. Pull camshaft (12) out of the engine block until a hoist can be fastened to it.12. Put identification on the camshafts as to their location in the engine so they can be installed correctly.13. Remove camshaft (12) and tool group (C) from the engine. The weight of the 3512 camshaft is 63 kg (140 lb.). The 3508 Camshaft weight is 43 kg (95 lb.). 14. If necessary, remove bolts (13) to make a separation of the 3512 Camshaft only.Install Camshafts
1. If the 3512 Camshafts were taken apart, make sure spacer (2) is in position between the camshaft and camshaft assembly. Put 9S3263 Thread Lock on the threads of bolts (1) and tighten the bolts by hand only to a torque of 45 7 N m (33 5 lb.ft.). Make sure the camshafts are installed respective to the marks (Rear L.H., Rear R.H.) on the ends of the camshafts.2. Install the pilot assembly part of tool group (A) to one end of the camshaft and the handle part of tool group (A) to the other end. 3. Fasten a hoist to camshaft (3) and put the camshaft in position and push it into the engine block. Remove the hoist and tool group (A). 4. Install washers (4) on each side of the engine to hold the camshafts in position. 5. Remove timing pins (5) from their storage positions on each side of the engine. 6. Turn the camshafts until timing