Chevrolet 10496871 Starter Motor, Remanufactured

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To remove and install the starter, begin by disconnecting the negative battery cable and raising the car on jackstands. Remove any starter braces or shields in the way, then remove the starter motor-to-engine bolts and allow the starter to drop down. Disconnect the solenoid wires and battery cable before removing the starter. To replace the solenoid, remove the starter from the vehicle and remove the screw and washer from the motor connector strap terminal. Remove the screws retaining the solenoid housing to the end frame assembly and twist the solenoid clockwise to remove the flange key from the keyway slot. Remove the solenoid assembly and install the new one by positioning the solenoid body on the drive housing and turning it counterclockwise to engage the flange key in the keyway slot. Install the screws to retain the solenoid housing to the end frame. For an overhaul, start by removing the starter from the vehicle and disconnecting the field coil straps from the solenoid. Remove the through-bolts to separate the commutator end frame, field frame assembly, drive housing, and armature assembly. On diesel starters, remove the insulator from the end frame and the shift lever pivot bolt. On 25 MT diesel starters, remove the center bearing screws and the drive gear housing from the armature shaft. Slide off the 2-piece thrust collar from the armature shaft and use a piece of pipe or socket to drive the retainer toward the snapring. Remove the snapring with pliers and slide off the retainer and starter drive. To reinstall, lubricate the armature shaft and install the starter drive and retainer. Place the snapring on the shaft and tap it into place. Slide the retainer and thrust collar onto the shaft and squeeze them together with pliers. Lubricate the drive housing bushing and engage the shift lever yoke with the clutch. Install the drive assembly into the drive gear housing and reassemble the remaining components. For brush replacement, disconnect the field coil from the motor solenoid terminal and remove the starter through bolts. Remove the commutator end frame and washer, then remove the field frame and armature assembly from the drive housing. Remove the brush holder pivot pin, brush springs, and brushes. Install the new brushes and reassemble the components in reverse order.

If the starter motor does not turn at all when the switch is operated, make sure that the shift lever is in Neutral or Park (automatic transmission) or that the clutch pedal is depressed (manual transmission). Make sure that the battery is charged and that all cables, both at the battery and starter solenoid terminals, are secure. If the motor spins but the engine is not being cranked, then the overrunning clutch in the starter motor is slipping and the motor must be removed from the engine and disassembled. If, when the switch is actuated, the starter motor does not operate at all but the solenoid clicks, then the problem is in the main solenoid contacts or the starter motor itself. If the solenoid plunger cannot be heard when the switch is actuated, the solenoid itself if defective or the solenoid circuit is open. To check out the solenoid, connect a jumper lead between the battery(+) and the S terminal on the solenoid. If the starter motor now operates, the solenoid is OK and the problem is in the ignition or neutral start switches or in the wiring. If the starter motor still does not operate, remove the starter/solenoid assembly for disassembly, testing and repair. If the starter motor cranks the engine at an abnormally slow speed, first make sure that the battery is charged and that all terminal connections are tight. If the engine is partially seized, or has the wrong viscosity oil in it, it will crank slowly also. Run the engine until normal operating temperature is reached, then disconnect the coil wire from the distributor cap and ground it on the engine (remote coil only). On models with the coil in the distributor cap, disconnect the pink wire from the distributor. Connect a voltmeter positive lead to the starter motor terminal of the solenoid and then connect the negative lead to ground. Actuate the ignition switch and take the voltmeter readings as soon as a steady figure is indicated. Do not allow the starter motor to turn for more than 30 seconds at a time. A reading of 9 volts or more, with the starter motor turning at normal cranking speed, is normal. If the reading is 9 volts or more but the cranking speed is slow, the motor is faulty. If the reading is less than 9 volts and the cranking speed is slow, the solenoid contacts are probably burned.

Separate the starter from the engine.