3406B (PEEC) DIESEL TRUCK ENGINE Caterpillar


Alternator

Usage:

Delco-Remy 27-SI Alternator

9L5938 12V 65A

Rotation ... CW or CCW.

Polarity ... negative ground.

Rated output (cold):

2000 rpm ... 46A

5000 rpm ... 58A

Rated output (hot) ... 65A

Output voltage ... 14.0 ± .5V

Field current at 12V and 27°C (80°F) ... 5.2 to 5.8A

(1) Torque for pulley nut ... 100 ± 7 N·m (75 ± 5 lb ft)

(2) Terminal torques:

Torque for battery connection nut ... 3.7 ± 0.8 N·m (32.5 ± 7.5 lb in)

Torque for ground connection nut ... 9.0 ± 3.0 N·m (80 ± 27 lb in)

3T7070 12V 65A

Rotation ... CW or CCW.

Polarity ... negative ground.

Rated output (cold):

2000 rpm ... 52A

5000 rpm ... 72A

Rated output (hot) ... 80A

Output voltage ... 14.0 ± .5V

Field current at 12V and 27°C (80°F ... 5.2 to 5.8A

(1) Torque for pulley nut ... 100 ± 7 N·m (75 ± 5 lb ft)

(2) Terminal torques:

Torque for battery connection nut ... 3.7 ± 0.8 N·m (32.5 ± 7.5 lb in)

Torque for ground connection nut ... 9.0 ± 3.0 N·m (80 ± 27 lb in)

Delco-Remy 20-SI Alternator

5N5692 24V 45A

Rotation ... CW or CCW.

Polarity ... negative ground.

Output when cold:

2500 rpm ... 12A

6500 rpm ... 45A

Rated output (hot) ... 45A

Field current at 24V and 27°C (80°F) ... 3.3 to 3.8A

Torque for positive output terminal nut ... 6.2 to 8.0 N·m (55 to 71 lb in)

(1) Torque for five ground screws ... 1.7 to 2.9 N·m (15 to 26 lb in)

(2) Torque for pulley nut ... 100 ± 7 N·m (75 ± 5 lb ft)

Delco-Remy 30-SI Alternator

4N3986 24V 60A

Rotation ... CW or CWW.

Polarity ... Insulated ground.

Output when cold:

2600 rpm ... 46A

6500 rpm ... 60A

Rated output (hot) ... 60A

Field current at 24V and 27°C (80°F) ... 2.5 to 2.8A

(1) Torque for pulley nut ... 100 ± 7 N·m (75 ± 5 lb ft)

(2) Torque for output terminal nuts ... 6.8 to 8.0 N·m (60 to 72 lb in)

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