69543 1 Mercury TUBE, EXHAUST (SHORT SHAFT)

1. Use tooling (A) to remove two camshaft drive gears (1) from the ends of the crankshaft. 2. Remove bolts (3) to remove bracket (2) from the flywheel housing. 3. Remove bolt (4) and disconnect marine gear oil pressure line (5) and air restriction line (6). 4. Remove bolts (7) to remove housing (8) with three water lines (11) from the engine.5. Remove three bolts (9) to disconnect marine gear oil pressure line (5), air restriction line (6) and two temperature sending unit wires (10) from the flywheel housing. Put the lines and wires out of the way of the housing.6. Drain the oil from the oil pan. 7. Remove all the bolts that hold the oil pan to the engine. Install two 3/8"-16 NC guide bolts (12) in each side of the oil pan. Fasten a hoist to the engine and lift the engine approximately 12 mm (0.5 in.) off of the oil pan. Put two 50 mm wide x 100 mm long x 6 mm thick (2" wide x 4" long x 1/4" thick) plates (13) in position between the cylinder block and the oil pan on each side of the engine. Lower the engine on plates (13) and remove the hoist. The weight of the 3512 Engine is approximately 5902 kg (13,000 lb.) and the 3508 Engine is approximately 4445 kg (9800 lb.). 8. Use tooling (B) to fasten a hoist to flywheel housing (14). Remove two of the bolts that hold flywheel housing (14) in position and install two 1/2"-13 NC guide bolts (15). Remove the remainder of the bolts that hold flywheel housing (14) and pull it from the dowels in the cylinder block. Remove the flywheel housing from the engine. The weight of the 3512 Flywheel Housing is 245 kg (540 lb.). The weight of the 3508 Flywheel Housing is 202 kg (445 lb.).Install Flywheel Housing
1. Put the flywheel housing gasket in position on the rear of the cylinder block. 2. Install two 1/2"-13 NC guide bolts in the rear of the cylinder block. Fasten a hoist to flywheel housing (1) with tooling (A).3. Put flywheel housing (1) in position on the guide bolts. Install the bolts in the housing and tighten the bolts evenly. Remove the guide bolts and install the remainder of the bolts.4. Cut the flywheel housing gasket even with the bottom of the bolts. 5. Fasten a hoist to the engine and lift the engine enough to remove the plates between the cylinder block and the oil pan. If the oil pan gasket is damaged, the engine will have to be removed from the oil pan to make a replacement of the gasket. Lower the engine on the oil pan and remove the guide bolts from the oil pan. Install all bolts (2) that hold the oil pan in position. 6. Install housing (3) with the three water lines on the engine. 7. Put air restriction line (6), marine gear oil pressure line (5) and two sending unit wires (4) in position on the flywheel housing. Connect the two lines and install the bolts that hold the lines and wires in position. 8. Install bracket (7) and the bolts that hold it to the flywheel housing. 9. Put drive gears (8) in position on camshafts (9) and install the plates and bolts that hold drive gears (8) in position. Tighten the bolts evenly to a torque of 100 15 N m (75 10 lb. ft.). Hit the plates with a hammer and tighten the bolts again to the same torque. Do this until the torque does not change.10. Fill the engine with oil to the correct level.end by:a) install exhaust elbowb) install tachometer drivec) install crankshaft rear seal and wear sleeved) install air starter