GM 22522853 MOTOR

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.

Disconnect the ground cable from the battery and raise the vehicle to a satisfactory working height. Disconnect the leads at the starter solenoid, marking each with a coded piece of tape for easy identification upon reassembly, and temporarily replace each of the securing nuts to the terminals to prevent damage to the stubs due to various thread types. Loosen the starter front bracket nut and remove the two mount bolts, then take out the front bracket bolt and rotate the bracket to withdraw the starter by lowering its front end. For installation, reverse the removal process, tightening the mount bolts first to the specified torque before securing the front bracket bolt and nut, and finally install each of the wires to the solenoid terminals using the identification coding.

Disconnect the ground cable from the battery and raise the vehicle to a satisfactory working height. Disconnect the leads at the starter solenoid, marking each with a coded piece of tape for easy identification upon reassembly, and temporarily replace each of the securing nuts to the terminals to prevent damage to the stubs due to various thread types. Loosen the starter front bracket nut and remove the two mount bolts, then take out the front bracket bolt and rotate the bracket to withdraw the starter by lowering its front end. For installation, reverse the removal process, tightening the mount bolts first to the specified torque before securing the front bracket bolt and nut, and finally install each of the wires to the solenoid terminals using the identification coding.

Stand the armature vertically on a piece of wood and position the snap-ring on the end of the shaft. Drive the snap-ring onto the shaft using a hammer and hardwood, then slide it down until it drops into its groove.

Clean the commutator by spinning it while wrapped with number 00 sandpaper, avoiding any other abrasive materials.

Reconnect the field coil connectors to the MOTOR terminal of the solenoid.

Ensure the battery is fully charged, all connections are tight, the engine oil is of the correct grade, and there are no mechanical faults.

Installation is a reversal of removal; tighten the mount bolts first to the specified torque, followed by the front bracket bolt and nut.