TM-9-2815-220-24

AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL FOR AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines

TM-9-2815-220-24 - Page 1327 of 1563

TM 9-2815-220-24

GENERATOR DRIVE MECHANISM REPLACE/REPAIR (650 AMPERE)

0156 00

DISASSEMBLY (Continued)

4. Remove bearing (20) from idler spur gear (10).

a. Remove retaining ring (21) from spur gear (10).

Discard retaining ring.

b. Using an arbor press, remove and discard ball bearing (20) from spur gear (10).

1

20

21

0

INSPECTION

1. Measure inside diameter (A) of bearing bore in generator adapter (4).

Replace generator

adapter if it is not within specifications in the following table.

2. If bearings were removed, measure outside diameter (B) on both ends of generator drive

gear (19).

Replace drive gear (19) if it is not within specifications in the following table.

Location

Sizes and Fit of New Parts - inches (mm)

Wear Limits

A

2.8346 (71.9988)

2.8353 (72.0166)

2.8356 (72.0242)

B

1.3781 (35.0037)

1.3785 (35.0139)

1.3779 (34.9986)

B

19

B

4

A

WP 0156 00-5