G379, G398 & G399 ENGINES Caterpillar


Magneto Drive

Usage:

Rotation of magneto drive is clockwise as seen from rear of engine.

(1) Diameter of drive shaft ... 25.425 ± 0.013 mm (1.0010 ± .0005 in.)

(2) Diameter of front bearing surface (journal) of drive shaft ... 15.829 to 15.845 mm (.6232 to .6238 in.)

Bearing bore ... 15.888 to 15.939 mm (.6255 to .6275 in.)

(3) Torque for retaining bolts for drive gear (apply 4S3263 Thread Lock to threads) ... 25 ± 3 N·m (18 ± 2 lb ft)

Position of drive tang from magneto - Fairbanks Morse:

(A) G399 Engine (both magnetos):

Angle from horizontal ... 30°

(B) G398 Engine:

Angle from vertical ... 45°

G379 Engine:

Angle from vertical ... 30°

Position of drive tang from magneto - Altronic:

All Engines:

Angle from vertical ... 0°

Back to top
The names Caterpillar, John Deere, JD, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
CH-Part.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only.