Distributor Overhaul

DISTRIBUTOR OVERHAUL

DISASSEMBLY PROCEDURE

NOTE: The ignition system distributor driven gear and rotor may be installed in multiple positions. In order to avoid mistakes, mark the distributor on the following components in order to ensure the same mounting position upon reassembly:
- The distributor driven gear
- The distributor shaft
- The rotor holes

Installing the driven gear 180 degrees out of alignment, or locating the rotor in the wrong holes, will cause a no-start condition. Premature engine wear or damage may result.




1. Remove the distributor.
2. Align the white paint mark on the bottom stem of the distributor, with the pre-drilled indent hole in the bottom of the gear (2).
3. With the gear in this position, the rotor segment should be positioned as shown for a V6 engine (1). If not, replace the distributor.




4. Remove the rotor screws.
5. Remove the rotor.




6. Note the locating holes that the rotor screws were removed from:
- The rotor screw holes (1)
- The rotor locator pin holes (2)




7. Line up the square-cut hole in the vane wheel with the camshaft position (CMP) sensor.




8. Remove and discard the CMP sensor screws.




9. Remove the CMP sensor.
10. Note the dimple located below the roll pin hole on one side of the gear. The dimple will be used to properly orient the gear onto the shaft during assembly.

CAUTION: Refer to Safety Glasses Caution.




11. Support the distributor drive gear in a V-block or similar fixture.

12. Drive out the roll pin with a suitable punch.




13. Remove the driven gear from the distributor shaft.
14. Remove the round washer.
15. Remove the tang washer.
16. Remove the shim washer (1).




17. Remove the oil seal.

ASSEMBLY PROCEDURE

IMPORTANT: Installing the driven gear 180 degrees out of alignment, or locating the rotor in the wrong holes, will cause a no-start condition. Premature engine wear or damage may result.




1. Line up the square-cut hole in the vane wheel for the CMP sensor.




2. Install the CMP sensor.

NOTE: Refer to Fastener Notice.




3. Install NEW CMP sensor screws.

Tighten the screws to 2.2 N.m (19 lb in).




4. Identify the correct rotor mounting holes:
- At the rotor screw holes (1)
- At the rotor locator pin holes (2)




5. Install the distributor rotor according to the index marks.
6. Install the rotor screws.

Tighten the screws to 1.9 N.m (17 lb in).




7. Install the shim washer (1) onto the bottom of the distributor shaft.
8. Install the tang washer.
9. Install the round washer.
10. Install the driven gear according to the index marks.




11. Align the rotor segment as shown for a V6 engine (1).
12. Install the gear and align the white paint mark on the bottom stem of the distributor, with the pre-drilled indent hole in the bottom of the gear (3).
13. Check to see If the driven gear is installed incorrectly, the dimple will be approximately 180 degrees opposite the rotor segment when it is installed in the distributor.

CAUTION: Refer to Safety Glasses Caution.




14. Support the distributor drive gear in a V-block or similar fixture.

15. Install the roll pin with a suitable punch and hammer.




16. Install a NEW oil seal under the mounting flange of the distributor base.
17. Install the distributor.