CYLINDER HEAD GP 1291674 - Caterpillar

Remove Timing Pin Plug
(1) Timing pin plug.2. Remove the plug at the front end of the fuel injection pump housing.3. Install 6V2112 Timing Pin (end with taper) through the hole in the injection pump housing.4. If timing is correct, the timing pin will go into the notch in the camshaft and the timing bolt will turn into the threaded hole in the flywheel. If timing is NOT correct, the timing must be changed. If timing is correct, BE SURE TO REMOVE TIMING PIN AND TIMING BOLT.
Access Cover To Automatic Timing Advance Unit
(2) Cover.If timing was NOT correct, remove timing pin and use the procedure that follows to change the timing.a. Remove access cover (2) to the four bolts of the automatic timing advance unit.b. BE SURE the timing pin is removed before you loosen the bolts. Loosen the four bolts (3) which hold automatic timing advance unit (4) on the fuel pump camshaft.
Automatic Timing Advance Unit
(3) Bolts. (4) Automatic timing advance unit.c. Tighten the bolts (3) with fingers until there is a small amount of friction (slight drag) between the retainer and the timing advance unit (4). This friction will hold the unit against the timing gears. This prevents play (backlash) when gears are turned to the correct position.d. Remove the timing bolt. Turn the flywheel until the timing pin will go into the groove in the injection pump camshaft.e. With the timing pin installed, turn the flywheel clockwise (opposite the direction of engine rotation) a minimum of 30 degrees. The reason for this step is to be sure the play is removed from the timing gears when the engine is put on top center (TC).f. Turn the flywheel in the direction of engine rotation until the No. 1 piston of the engine is on top center compression stroke. Then turn the timing bolt into the threaded hole in the flywheel.g. Tighten bolts (3) to 25 N m (20 lb ft). Then remove the timing pin from the injection pump housing.h. Tighten bolts (3) to 230 15 N m (170 11 lb ft). Then remove the timing bolt from the flywheel.5. Turn the crankshaft two complete revolutions and check the timing again to see that timing pin will go into notch in camshaft with bolt in flywheel.6. If timing is not correct, do the procedure of Steps b through h again. It timing is correct, BE SURE TO REMOVE TIMING PIN AND TIMING BOLT.P-302: Rack Position Sensor Calibration
1. Shut the engine OFF. Turn power off to the PEEC ECM.
Fuel Injection Pump Housing
(1) Rack solenoid (BTM). (2) Cover. (3) Plug.2. Remove plug (3) and cover (2) and rack solenoid (BTM) (1) from the fuel injection pump housing.
Fuel Timing Pin Installed
(A) 4C9581 Rack zero pin. (4) Rack servo.3. Install 4C9581 Rack Zero Pin (A) in the top of the fuel injection pump housing. Make sure rack servo (4) is pushed toward the rear of the engine before the timing pin is installed.
Install Gauge Block
(B) 4C9583 Gauge block.4. Install