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 962 of 1563

TM 9-2815-220-24

COUPLING, FUEL INJECTION PUMP, REPLACE/REPAIR

0116 00

INSPECTION (Continued)

3. Check backlash of assembled coupling.

a. Install screw (18), flat washer (19), and two nuts (20) in hub (12).

b. Temporarily assemble two hubs (5 and 12) and two sleeves (4 and 11) using four

spacers (21), four lock washers (22), and four screws (23).

c. Clamp hub (5) in machinist’s vise.

d. Using bolt (18) as a turning device, check backlash between hubs (5 and 12) at a point

1-5/16-inches (3.3375mm) from shaft center on any of the four flats.

If backlash exceeds

0.006-inches (0.1524 mm), replace flexible shaft coupling assembly.

4. Remove assembly from vise and remove four screws (23), four lock washers (22), four

spacers (21), two sleeves (4 and 11), two hubs (5 and 12), two nuts (20), flat washer (19), and

screw (18).

Discard lock washers.

18

12

19

12

11

23

22

21

20

5

4

18

5

Place dial indicator here

to measure backlash

x

4

1

20

1

Vise

WP 0116 00-6