Installation Procedure

Important:  The calibrating resistor is specific to the injection pump. Do not damage the resistor. The calibrating resistor indication number (2) is located on the front of the calibrating resistor. If the calibrating resistor is damaged or lost, the injection pump must be removed for replacement or taken to a Stanadyne dealer for calibration.

1. Install the calibrating resistor in the new fuel solenoid driver using snap ring pliers (the resistor is keyed to fit in only one way). Install the resistor with the indication number facing upward. If the fuel solenoid driver calibrating resistor is missing, DTC 1218 will set.
   Fig 1: Installing Fuel Solenoid Calibrating Resistor

   Courtesy of GENERAL MOTORS CORP.

   Important:  The pad is designed to transfer heat generated by the PMD to the pump housing so the heat can be dissipated. Do not install the fuel solenoid driver without a new heat transfer pad. Do not reuse a heat transfer pad. Use a new heat transfer pad only. The heat transfer pad is required to prevent rapid failure of the fuel solenoid driver from overheating. The heat transfer pad is not a seal or a gasket. The pump comes with new screws and a new heat transfer pad.

2. Place the new heat transfer pad (1) on the side of the new fuel solenoid driver and insert the four fuel solenoid driver mounting screws into the fuel solenoid driver.
   Fig 2: Fuel Solenoid Driver, Wiring Connector & Heat Transfer Pad

   Courtesy of GENERAL MOTORS CORP.
   NOTE: Refer to FASTENER NOTICE .

   Important:  Do not over tighten the fuel solenoid driver mounting screws. Damage to the fuel solenoid driver will result. Damage to the PMD from overtightening the mounting screws is very common.

3. Align the fuel solenoid driver mounting screws with the holes in the pump housing and tighten.

   Tighten 

   Tighten the fuel solenoid driver mounting screws to 2.75 N.m (24 lb in.)

4. Connect the fuel solenoid driver wiring harness connector.
5. Loosen the upper injection pump retaining nut approximately 1/2 turn using the J 41711  . Do not remove the nut.
6. Using the J 29872-A  , rotate the pump back to the pump's original position using the reference mark you created in step 2 Removal Procedure.
7. Install the intake manifold. Refer to INTAKE MANIFOLD REPLACEMENT - UPPER and INTAKE MANIFOLD REPLACEMENT - LOWER .
8. Perform the injection timing adjustment procedure. Refer to Fuel Injection Pump Timing Adjustment .
   Fig 3: Fuel Solenoid Driver At Pump Housing

   Courtesy of GENERAL MOTORS CORP.