Delco-Remy Alternator; Pulley Nut Tightening

Delco-Remy Alternator; Pulley Nut Tightening CONT.

TM-5-3805-263-14P-2 Grader Heavy Road Motorized Type I Nonsectionalized Type II Sectionalized Manual
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ELECTRICAL SYSTEM Delco-Remy Alternator; Pulley Nut Tightening Tighten nut holding the pulley to a torque of 75 ± 5 lb. ft. (100 ± 7 N•m) with the tools shown. STARTING SYSTEM Tools Needed: 5P300 Electrical Tester NOTE: Make reference to the instructions inside the cover of the tester, when testing with the 5P300 Electrical Tester. Use a D.C. Voltmeter to find the starting system components which do not function. Put the DISCONNECT SWITCH in the ON position. Move the starting control switch to activate the starter solenoid. Starter solenoid operation can be heard as the pinion of the starter motor is engaged with the ring gear on the engine flywheel. If the solenoid for the starter motor will not oper- ate, it is possible that the current from the battery is not getting to the solenoid. Fasten one lead of the voltmeter to the connection (terminal) for the bat- tery cable on the solenoid. Put the other lead to a good ground. No voltmeter reading shows there is a broken circuit from the necessary when there is a TESTING AND ADJUSTING TM 5-3805-263-14&P-2 battery. More testing is reading on the voltmeter. The solenoid operation also closes the electric cir- cuit to the motor. Connect one lead of the voltmeter to the solenoid connection (terminal) that is fastened to the motor. Put the other lead to a good ground. Activate the starter solenoid and look at the volt- meter. A reading of battery voltage shows the prob- lem is in the motor. The motor must be removed for further testing. No reading on the voltmeter shows that the solenoid contacts do not close. This is an indication of the need for repair to the solenoid or an adjustment to be made to the starter pinion clearance. Make a test by fastening one voltmeter lead to the connection (terminal) for the small wire at the solen- oid and the other lead to the ground. Look at the voltmeter and activate the starter solenoid. A volt- meter reading shows that the problem is in the solen- oid. No voltmeter reading shows that the problem is in the heat-start switch or wiring. Fasten one voltmeter lead to the heat-start switch at the connection (terminal) for the wire from the battery. Fasten the other lead to a good ground. No voltmeter reading indicates a broken circuit from the battery. Make a check of the circuit breaker and wiring. If there is voltmeter reading, the malfunction is in the heat-start switch or in the wiring. Fasten one lead of the voltmeter to the battery wire connection of the starter switch and put the other lead to a good ground. A voltmeter reading indicates a failure in the switch. A starter motor that operates too slow can have an overload because of too much friction in the engine being started. Slow operation of the starter motor can also be caused by shorts, loose connections and/or dirt in the motor. Pinion Clearance Adjustment (Prestolite) There are two adjustments on this type motor. Armature end play and pinion position. Armature End Play Adjust to .005 to .030 in. (0.13 to 0.76 mm) by adding or removing thrust washers on the commuta- tor end of the armature shaft. Pinion Position This adjustment is accomplished in two steps. 1-77

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