Notice: Never operate the starter motor more than 15 seconds at a time without pausing in order to allow it to cool for at least 2 minutes. Overheating will damage the starter motor.
Notice: Complete the testing as quickly as possible in order to prevent overheating and damaging the solenoid.
Important: If the specified current draw does not include the solenoid, deduct from the armature reading (1) the specified current draw of the solenoid hold-in winding.
6.1. | Rated current draw and no-load speed indicate a normal condition for the starter motor. |
6.2. | Low RPM combined with high current draw is an indication of excessive friction caused by tight, dirty, or worn bearings; a bent armature shaft; a shorted armature; or shorted field coils. |
6.3. | Failure to operate with high current draw indicates a direct ground in the terminal or fields, or frozen bearings. |
6.4. | Failure to operate with no current draw indicates an open field circuit, open armature coils, broken brush springs, worn brushes, high insulation between the commutator bars, or other causes which would prevent good contact between the brushes and the commutator. |
6.5. | Low, no-load speed and low current indicate high internal resistance and high current draw, which usually mean shorted fields. |
Important: If the solenoids is not removed from the starting motor, the connector strap terminals must be removed from the terminal on the solenoid before making these tests.
10.1. | Check the hold-in windings by connecting an ammeter (3) in series with a 12-volt battery, the switch terminal (2), and to ground. |
10.2. | Connect the carbon pile (4) across the battery. |
10.3. | Adjust the voltage to 10 bolts. The ammeter reading should be 13 to 19 amperes. Current will decrease as the windings heat up. Current draw readings that are over specifications indicate shorted turns or a ground in the windings of the solenoid. Both conditions require replacement of the solenoid. Current draw readings that are under specifications indicate excessive resistance. No reading indicates an open circuit. |
Important: Current will decrease as the windings heat up. Current draw readings that are over specifications indicate shorted turns or a ground in the windings of the solenoid. Both conditions require replacement of the solenoid. Current draw readings that are under specifications indicate excessive resistance. No reading indicates an open circuit.
11.1. | Ground the solenoid motor terminal. |
11.2. | Adjust the voltage to 10 volts. The ammeter reading should be 59-79 amperes. |
11.3. | Check the connections and replace the solenoid, if necessary. |
Important: The pinion clearance must be correct to prevent the buttons on the shift lever yoke from rubbing on the clutch collar during the cranking.
Important: A means for adjusting the pinion clearance is not provided on the starter motor. If the clearance does not fall within the limits, check for improper installation and replace all worn parts.
Caution: Refer to Safety Glasses Caution in the Preface section.
Notice: Refer to Fastener Notice in the Preface section.
Tighten
Tighten the starter solenoid assembly screws to
8 N·m (71 lb in).
Tighten
Tighten the starter field coil connector nut to
8 N·m (71 lb in).
Tighten
Tighten the starter through-bolts to 6 N·m
(53 lb in).