Generator & Regulator: Removal & Installation Lexus SC I

Removal

Note. Work must be started after 90 seconds from the time the ignition switch is turned to the "LOCK" position and the negative (-) terminal cable is disconnected from the battery.

1. Disconnect the generator connector.
2. Remove the nut, and disconnect the generator wire.
3. Disconnect the wire harness from the clip.
4. Remove the pivot bolt, plate washer, adjusting lock bolt and generator.

Installation

1. Install generator. Mount generator on the generator bracket with the pivot bolt and adjusting lock bolt. (Scheme 6) Do not tighten the bolts yet. Connect the generator connector. Connect the generator wire with the nut.
2. Install drive belt. Install the drive belt with the adjusting bolt. Using a belt tension gauge, measure the drive belt tension. See «ES300»(ref-60541-S28617097332001011800000).
3. Tighten the pivot bolt and adjusting lock bolt. Torque: 56 Nm (570 kgfcm, 41 ftlbf) for pivot bolt, 18 Nm (180 kgfcm, 13 ftlbf) for lock bolt * After installing a belt, check that it fits properly in the ribbed grooves. Check by hand to confirm that the belt has not slip out of the groove on the bottom of the pulley. After installing a new belt, run the engine for about 5 minutes and recheck the belt tension.
4. Connect negative (-) terminal cable to battery.
5. Perform on-vehicle inspection. See «ON-VEHICLE TESTING»(ref-60541-S37694143822001011800000).

Scheme 6

Note. Work must be started after 90 seconds from the time the ignition switch is turned to the "LOCK" position and the negative (-) terminal cable is disconnected from the battery.

1. Disconnect negative battery cable.
2. Remove engine undercover.
3. Remove drive belt. Loosen the belt tension by turning the drive belt tensioner counterclockwise, and remove the drive belt.
4. Remove generator. Disconnect the generator connector. Remove the cap and nut, and disconnect the generator wire. Remove the bolt, and disconnect transmission oil cooler pipe bracket from the generator. Remove the nut and generator.

1. Install generator. Install the generator and transmission oil cooler bracket with the bolt and nut. Torque: 37 Nm (380 kgfcm, 27 ftlbf).
2. Connect the generator connector. Connect the generator wire with the nut and cap. (Scheme 10)
3. Install drive belt. Install the drive belt by turning the drive belt tensioner counterclockwise. (Scheme 9)
4. Connect negative (-) terminal cable to battery.
5. Perform on-vehicle inspection. See «ON-VEHICLE TESTING»(ref-60541-S37694143822001011800000).
6. Install engine undercover.

Scheme 7

Note. Work must be started after 90 seconds from the time the ignition switch is turned to the "LOCK" position and the negative (-) terminal cable is disconnected from the battery.

1. Disconnect negative battery cable.
2. Remove engine undercover.
3. Remove drive belt. Loosen the belt tension by turning the drive belt tensioner counterclockwise, and remove the drive belt.
4. On A/T models, remove the bolt and pipe clamp. Disconnect the 2 A/T oil cooler pipes from the generator.
5. Remove generator. Disconnect the generator connector. Remove the cap and nut, and disconnect the generator wire. Remove the bolt, and disconnect transmission oil cooler pipe bracket from the generator. Remove the nut and generator.

Install generator in reverse order of removal. Install the generator and transmission oil cooler bracket with the bolt and nut. Torque: 37 Nm (380 kgfcm, 27 ft lbf). Perform on-vehicle inspection. See ON-VEHICLE TESTING .

Scheme 8

Note. Work must be started after 90 seconds from the time the ignition switch is turned to the "LOCK" position and the negative (-) terminal cable is disconnected from the battery.

1. Disconnect negative battery cable.
2. Remove engine undercover.
3. Remove drive belt. Loosen the belt tension by turning the drive belt tensioner counterclockwise, and remove the drive belt.
4. Remove power steering vane pump pulley (if necessary).
5. Remove generator. Disconnect the generator connector. Remove the cap and nut, and disconnect the generator wire. Remove the bolt, and disconnect transmission oil cooler pipe bracket from the generator. Remove the nut and generator.

1. Install generator. Install the generator and transmission oil cooler bracket with the bolt and nut. Torque: 37 Nm (380 kgfcm, 27 ft lbf).
2. Connect the generator connector. Connect the generator wire with the nut and cap.
3. Install power steering vane pump pulley (if removed).
4. Install drive belt. Install the drive belt by turning the drive belt tensioner counterclockwise. see scheme 109
5. Connect negative (-) terminal cable to battery.
6. Perform on-vehicle inspection. See «ON-VEHICLE TESTING»(ref-60541-S37694143822001011800000).
7. Install engine undercover.

Scheme 9

Removal & Installation

1. Disconnect negative battery cable. Remove battery clamp cover.
2. Remove air cleaner cover. Remove No. 2 air cleaner hose.
3. Loosen belt tension by turning drive belt tensioner counterclockwise, and remove drive belt.
4. Remove engine under cover. Remove RH rear engine side under cover.
5. Disconnect power steering oil cooler pipe from oil pan.
6. Disconnect generator connector. Remove rubber cap and nut, and disconnect generator wire. Disconnect generator wire clamp from generator.
7. Remove bolt and clamp, disconnect 2 oil cooler pipes from bracket.
8. Remove bolt, nut, bracket and generator.
9. To install, reverse removal procedure.

Scheme 10

Note. Work must be started after 90 seconds from the time the ignition switch is turned to the "LOCK" position and the negative (-) terminal cable is disconnected from the battery.

1. Disconnect negative battery cable.
2. Remove engine undercover.
3. Remove drive belt. Loosen the belt tension by turning the drive belt tensioner clockwise, and remove the drive belt.
4. Remove generator. Disconnect the generator connector. Remove the cap and nut, and disconnect the generator wire. Remove the bolt, and disconnect transmission oil cooler pipe bracket from the generator. Remove the nut and generator.

1. Install generator. Install the generator and pipe bracket with the bolt and nut. Torque: 37 Nm (380 kgfcm, 27 ft lbf).
2. Install the 2 A/T oil cooler pipes with the pipe clamp and bolt. Install wire clamp to clip on generator.
3. Connect the generator connector. Connect the generator wire with the nut and cap.
4. Install drive belt. Install the drive belt by turning the drive belt tensioner clockwise. see scheme 122
5. Connect negative (-) terminal cable to battery.
6. Perform on-vehicle inspection. See «ON-VEHICLE TESTING»(ref-60541-S37694143822001011800000).
7. Install engine undercover.