Usage:
P-301: Camshaft Timing for Fuel Injection Pump
1. Put No. 1 piston at top center (TC) on the compression stroke. Make reference to Finding Top Center Compression Position For No. 1 Piston in the 3412 Industrial Engine Systems Operation Testing & Adjusting, Form No. SENR4652.
NOTE: A 1P3566 9/16 inch Hex Bit cut to a length of 25 mm (1.0 in) can be used to remove the plug from the front end of the injection pump housing.
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.
NOTE: 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.
NOTE: 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 4C9583 Fuel Pump Gauge to hold rack against zero pin.
NOTE: Make sure the rack sensor is "stuck" to the magnet.
5. With power switch(es) OFF, install ECAP.
6. Turn power switch(es) ON, engine OFF. Select the ECAP status display from the main menu that shows "Actual Rack Position" (see the Service Tool Special Instructions).
7. With the rack held back against the "zero pin", read the "Actual Rack Position" on the ECAP display.
a. If the "Actual Rack Position" reading is 9.50 ± 0.25 mm (.37 ± .01 in) the rack position sensor is correctly calibrated.
b. If the "Actual Rack Position" reading is not 9.50 ± 0.25 mm (.37 ± .01 in) the rack position sensor needs adjustment as follows:
8. Remove the wiring connectors from clip assembly. Do not disconnect any wiring at this time.
Adjustment Of Rack Position Sensor
(C) 4C9580 Slotted Socket. (5) Rack position sensor.
9. Use 4C9580 Slotted Socket (C) and a 1/2 inch ratchet to loosen the locknut on rack position sensor (5).
10. Make sure the rack position sensor wiring is connected to the transducer module wiring.
11. With power switch(es) ON, engine OFF, select the status display that has "Rack Position Sensor Calibration" from the main menu on the ECAP.
12. With the rack held back against the timing pin, turn the collar on the rack position sensor in or out until ECAP indicates the rack position sensor is calibrated.
13. Tighten the locknut to 55 ± 7 N·m (41 ± 4 lb ft).
14. Check the rack position calibration reading on the ECAP to make sure that the rack position sensor is still in calibration after tightening the locknut.
15. Turn power switch(es) OFF.
16. Install cover (2) on rack actuator housing. Make sure not to pinch a wire between the cover and housing.
17. Remove the rack zero pin and install plug (3) in top of the fuel injection pump housing.
18. Remove gauge block (B) and push rack servo towards the rear of the engine.
19. Install the Rack Solenoid (BTM).
NOTE: Make sure the lever of the solenoid engages correctly in the sleeve on the rack servo. If the lever is not engaged in the sleeve, the engine may overspeed or may not start.
20. Disconnect the ECAP from the PEEC control module. Connect the PEEC Diagnostic Connector to the wiring harness.
P-303: Engine Speed Sensor Adjustment
Adjustment Of Engine Speed Sensor
(A) 4C9582 Crowfoot wrench. (1) Engine speed sensor.
1. Use the 4C9582 Crowfoot Wrench (A) and a 3/8 inch drive ratchet and extension to loosen the locknut on engine speed sensor (1).
2. Turn engine speed sensor into the threads in the housing until it makes contact with the gear tooth on the fuel pump camshaft retainer. Back the engine speed sensor out 1/2 turn ± 30 degrees. This gives a clearance of .76 ± .15 mm (.030 ± .006 in) between the camshaft retainer and the magnet on the end of the engine speed sensor.
3. Use the 4C9582 Crowfoot Wrench (A) and tighten the locknut on engine speed sensor to a torque of 13 ± 2 N·m (10 ± 1 lb ft). Be careful to prevent rotation of the engine speed sensor while tightening the locknut.
NOTE: Do not over torque locknut. Damage to engine speed sensor may result.
P-304: Boost Pressure Sensor Calibration
The PEEC boost pressure sensor must be calibrated for a zero boost condition with the engine OFF. Calibration is accomplished electronically without need for manual adjustments.
The sensor must be recalibrated whenever the transducer module or ECM has been replaced. Incorrect sensor calibration may result in poor engine response or a Diagnostic Code 25 (Boost Pressure Sensor Fault) or a Diagnostic Code 42 (Check Sensor Calibration).
Calibration Procedure:
1. Turn power switch(es) ON, engine OFF. The sensor will not calibrate if the engine is running.
2. Select the Boost Sensor Calibration screen on the ECAP (see the Special Instructions included with the ECAP).
3. Wait several seconds for the automatic calibration to occur. The screen will display "Calibrated" when finished.
4. If the boost pressure sensor will not calibrate, follow P-224: Boost Pressure Sensor Test.
NOTE: The Transducer Module used on the 3412 (PEEC) Industrial Engine IS NOT interchangeable with the Transducer Module used on the 3406B PEEC Truck Engine.