Diesel Data: Automotive Repair

Distributor: Testing and Inspection

INSPECTION

1. Inspect Distributor Shaft. Turn the shaft and check that it is not rough or worn. If it feels rough or worn, replace the Distributor Housing Assembly.





2. Inspect air gap; Using Special Service Tool or equivalent for G1 and G2 pickups and a feeler gauge for the NE pickup, measure the air gap between the signal rotor and pickup coil projection (SST 09240-00020 for G1 and G2 pickups).

Air gap: 0.2 - 0.5 mm (0.008 - 0.020 in)

If the air gap is not as specified, replace the distributor housing assembly.

3. Disconnect Distributor Connector.





4. Inspect Pickup Coil resistance; Using an ohmmeter, measure the resistance between terminals.

Pickup coil resistance (Cold):
G1 and G (-): 125 - 200 Ohms
G2 and G (-): 125 - 200 Ohms
NE and G (-): 155 - 250 Ohms


Pickup coil resistance (Hot):
G1 and G (-): 160 - 235 Ohms
G2 and G (-): 160 - 235 Ohms
NE and G (-): 190 - 290 Ohms


If the resistance is not as specified, replace the distributor housing assembly.

NOTE: "Cold" and "Hot" in the preceding tests express the temperature of the coils themselves. "Cold" is from -10°C (14°F) to 50°C (122°F) and "Hot" is from 50°C (122°F) to 100°C (212°F).