TM 9-2320-272-24-1
3-43. ACCELERATOR LINKAGE (M939A2) MAINTENANCE (Contd)
1.
For general cleaning instructions, refer to para. 2-14.
2.
For general inspection instructions, refer to para. 2-15.
3.
Replace all parts failing inspection.
1.
Position nut (13) to mark on accelerator rod (15).
2.
Install ball joint (12) on accelerator rod (15).
3.
Install rod (20) on quick-disconnect socket (21).
4.
Install nut (19) on rod (20). Finger tighten nut (19).
5.
Install yoke (18) on rod (20) so several threads are between yoke (18) and nut (19).
6.
Install yoke (18) and spring (17) on accelerator rod (15).
NOTE
Assistant will help with step 7.
7.
Compress spring (17) and install pin (16) in accelerator rod (15).
1.
Install
bracket (8) on bracket (4) with throttle shaft (6), two washers (7), and new cotter pins (5).
2.
Install
connector (10) and cable (3) on bracket (8) and tighten screw (11).
3.
Install
ball joint (12) on bracket (8) with new locknut (9).
4.
Install
throttle return spring (14) on accelerator rod (15) and throttle shaft (6).
NOTE
1.
Position control lever (2) to idle position.
2.
Turn rod (20) until control lever (2) moves forward 0.125 in. (3.2 mm).
3.
Tighten nut (19) securely.
4.
Depress spring-loaded sleeve (22) and install quick-disconnect socket (21) on ball joint (1).
5.
Check for engine idle at 550-650 rpm.
NOTE
Perform steps 6, 7, and 8 as necessary to obtain correct idle speed.
6.
Compress spring-loaded sleeve (22) and disconnect socket (21) from ball joint (1).
7.
Loosen jamnut (19) and lengthen or shorten rod (20) by turning rod (20) into or out of yoke (18) to
obtain correct movement for idle speed.
8.
Depress spring-loaded sleeve (22) and install quick-disconnect socket (21) on ball joint (1).
9.
Tighten jamnut (19) when correct idle speed is obtained.
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