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