HARNESS AS 4736993 - Caterpillar

start by:a) remove fuel pump drive gear and automatic timing advance Before any timing gears are removed, make sure the "C" mark on the crankshaft is in alignment with the "C" mark on the camshaft gear. 1. Remove two bolts (1) and plate (3). Remove idler gear (2). 2. Remove the idler gear bearing with tooling (A). 3. Remove four bolts (4) and washers. Remove camshaft drive gear (5). If the camshaft drive gear is hard to remove, hit it with a soft hammer.4. Remove the three nuts and washers that hold the fuel injection housing to the timing gear plate. 5. Remove bolts (6) and locks (7) and (8). 6. Remove timing gear plate (9).Install Timing Gears And Plate
1. Put the gasket and timing gear plate (1) against the cylinder block. Install the two locks and six bolts that hold the timing gear plate in place.2. Install the three nuts and washers that hold the fuel injection pump housing to the timing gear plate. 3. Install the camshaft drive gear. Make sure the "C" mark on the crankshaft gear is in alignment with the "C" mark on the camshaft drive gear. Install the four washers and bolts.4. Use tool (A) and a press and install the bearing in the idler gear. Install the bearing to a depth of .060 in. (1.52 mm) below the outside surface. The bearing diameter after installation must be 1.3781 .0019 in. (35.000 0.048 mm). 5. Install idler gear (2). Install plate (3) and bolts (4) that hold the idler gear in place.end by:a) install fuel pump drive gear and automatic timing advance