Generator assy (1MZ−FE/3MZ−FE)

Remove the wire harness clamp.
Disconnect the generator connector.
Open the terminal cap, remove the nut and disconnect the generator wire.

Loosen bolts A and B.
Loosen bolt C to lessen the tension of the V belt.

f. Remove bolts A and B, and the generator.

a. Temporarily install the generator with bolts A and B.

Adjust the V belt tension by tightening bolt C.
- Tighten bolts A and B. Torque: 58 N·m for bolt A 18 N·m for bolt B
- Install the generator wire with the nut. Torque: 9,8 N·m
Connect the generator connector.
Install the wire harness clamp.

HINT:


Clamp SST 2. in a vise.
Insert SST (1−A, B) into SST 2., and attach the pulley nut to SST 2..

d. To loosen the pulley nut, turn SST (1−A) in the direction shown in the illustration.
NOTICE: To prevent damage to the rotor shaft, do not loosen the pulley nut more than one−half turn.e. Remove the generator from SST 2..

g. Remove the pulley nut and generator pulley.

Place the generator on the generator pulley.
Remove the 3 nuts and the generator rear end cover.
Remove generator rear end cover 3. REMOVE TERMINAL INSULATOR
a. Remove the terminal insulator from the generator rectifier end frame.
Remove terminal insulator 4. REMOVE GENERATOR BRUSH HOLDER ASSY
a. Remove the 2 screws and the generator brush holder.
Remove generator brush holder assy 5. REMOVE GENERATOR COIL ASSY
a. Remove the 4 bolts.

SST 09950−40011 (09951−04020, 09952−04010, 09953−04020, 09954−04010, 09955−04071, 09957−04010, 09958−04011)

a. Remove the generator washer and the generator rotor.
Remove generator rotor assy 7. INSPECT GENERATOR BRUSH HOLDER ASSY
a. Check the brush length.
1. Using a vernier caliper, measure the exposed brush length.Specified brush length: 4.5 to10.5 mm (0.177 to 0.413 in.)If the exposed brush length is less than minimum, replace the generator brush holder.
Inspect generator brush holder assy 8. INSPECT GENERATOR ROTOR ASSY a. Check the bearing is not rough or worn.If necessary, replace the generator rotor.

b. Check the rotor for open circuit.
1. Using an ohmmeter, measure the resistance between the slip ring.Standard: 2.3 to 2.7 W at 20 C (68 F)If the resistance is not as specified, replace the generator rotor.

c. Check the rotor for ground.
1. Using an ohmmeter, check the resistance between the slip ring and the rotor core.Standard: 10 kΩ or higher If the resistance is not as specified, replace the generator rotor.d. Inspect slip rings.
1. Check that the slip rings are not rough or scored.If rough or scored, replace the generator rotor.

e. Check the slip ring diameter.
1. Using a vernier caliper, measure the slip ring diameter.Specified diameter: 14.0 to 14.4 mm (0.551 to 0.567 in.)If the diameter is less than minimum, replace the generator rotor.

If necessary, replace the bearing.
Inspect generator drive end frame bearing 10. REMOVE GENERATOR DRIVE END FRAME BEARING
a. Remove the 4 screws and the retainer plate.

SST 09950−60010 (09951−00250), 09950−70010 (09951−07100)

SST 09950−60010 (09951−00470), 09950−70010 (09951−07100)


Place the generator drive end frame on the generator pulley.
Install the generator rotor and the generator washer.
Install generator rotor assy 13. INSTALL GENERATOR COIL ASSY
a. Using a deep socket wrench 21 and a press, press in the generator rectifier end frame carefully.


a. While pushing the 2 brushes to inside the brush holder, insert a pin (f1.0 mm (0.039 in.)) into the brush holder hole.

- Install the generator brush holder with the 2 screws. Torque: 1,8 N·m
Pull out the pin (f1.0 mm (0.039 in.)) from the generator brush holder.

Place the generator drive end frame on the generator pulley.
Install the generator rotor and the generator washer.
Install terminal insulator 16. INSTALL GENERATOR REAR END COVER a. Install the generator rear end cover with the 3 nuts.Torque: 4,6 N·m
Install generator rear end cover 17. INSTALL GENERATOR PULLEY SST 09820−63010 (09820−06010, 09820−06020) HINT:

Install the generator pulley to the rotor shaft by tightening the pulley nut by hand.
- Hold SST (1−A) with a torque wrench, and tighten SST (1−B) clockwise to the specified torque. Torque: 39 N·m
Install generator pulleyTest yourself
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