Friday, February 24, 2012

Oldsmobile starter solenoid replacement procedure?

The details are as follows :---


All of the starter motor and solenoid assemblies used by vehicles covered by this guide are non-serviceable starter assemblies, with the exception of some 3.8L engines using GM's SD255 starter motor.
3.8L Engine With SD255 Starter Motor Only
  1. Remove the starter motor from the engine as outlined earlier in this section.
  2. Remove the starter solenoid screws.
  3. Rotate the solenoid 90 degrees ( 1 / 4 turn) and pull the solenoid out of the starter.
To install:

Use only GM Part Number 10477431 grease to lubricate the solenoid core. This grease is specially formulated to aid plunger movement and dampen vibration of the plunger as the engine runs. Other greases may eventually degrade and prevent proper plunger movement, causing starter failure.

  1. Clean all parts well. Lubricate the solenoid core. Apply one complete packet (1 gram) of GM Part Number 10477431 grease evenly around the inside edge of the solenoid core. Apply all grease thickly to the first 1 / 2 inch (13mm) inside the edge of the core. Plunger movement will distribute grease properly. Avoid getting dirt or other contamination in the grease before installing the solenoid to the starter.
  2. Assemble the solenoid over the plunger by compressing the spring and aligning the solenoid motor field terminal with the field lead on the starter.
  3. Tighten the starter solenoid to starter motor screws to 58 inch lbs. (6.5 Nm). Tighten the solenoid motor solenoid to field terminal screw to 65 inch lbs. (7.3 Nm).
  4. Install the starter motor using the procedure described above.

The starting, or cranking system consists of the battery, starter motor, ignition switch and related wiring. These components are connected electrically. When the ignition switch is turned to theSTART position (and the theft protection module recognizes the key code, as equipped) battery voltage is applied to the starter solenoid (through the theft deterrent relay, as equipped) S terminal and the solenoid windings are energized. This causes the plunger to move the shift lever, which engages the pinion with the engine flywheel ring gear. The plunger also closes the solenoid contacts, applying battery voltage to the starter motor, which cranks the engine.
When the engine starts, the pinion will over-run and spin at engine speed (rather than starter motor speed) to help prevent flywheel and starter motor damage. When the ignition switch is released (removing the voltage from the solenoid) the plunger return spring disengages the pinion. In order to prevent excessive over-run, the ignition switch should be released as soon as the engine starts.

This details will help you.

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