EQUIPMENT DESCRIPTION AND DATA - TM-9-2920-224-34-P0017

TM 9- 2920- 224- 34&P

EQUIPMENT DESCRIPTION AND DATA

0002 00

THIS WORK PACKAGE COVERS:

Equipment Description and Data

GENERAL DESCRIPTION OF GENERATOR

a. Similarity Among Models. All generators covered in this manual are six--pole, six--brush units. The generator

armature is coupled to the engine's drive mechanism through a drive shaft with spring--loaded friction plates

which dampen and absorb sharp increases in torque from the engine drive mechanism. All models are cooled

by constant air circulation and are equipped with radio--noise suppression capacitors for protection of nearby

communications equipment. All models are alike with respect to output, rotation, drive mechanism, and brush

arrangement.

b. Difference Between Models. The difference between generator models is in the method used to deliver

cooling air to the generator.

1) Model G22--3 (8717421) is equipped with a fan at commutator end mounted directly on tubular armature

shaft. Fan (1) is enclosed by a fan cover assembly (2) which completes the commutator end of generator

housing (3) and contains an air inlet grille at the center of the cover.

2) Model G22--6F (10889713) is equipped with a separate cooling fan assembly (4) attached to the

commutator end of generator (3) in place of an internal fan. This fan unit is mounted axially and attached

to the generator housing through fan adapter (5). This model also has a guard (6) for ground terminal.

0002 00- 1