TM 5-4310-452-14
4-25. ENGINE THROTTLE CONTROL MAINTENANCE (Con't).
e.
ADJUSTMENT
1.
Make sure throttle arm (8) is resting on full speed stop (27).
2.
Loosen 2 nuts (13) until spring tension is fully relieved.
3.
Remove regulator cover (26) and loosen jamnut (25).
4.
Turn adjusting screw (24) counterclockwise until no tension is felt on adjusting screw, then turn adjusting screw
clockwise one full turn.
5.
Start engine and allow it to warm up (see paragraph 2-12).
6.
When discharge pressure gage (29) on indicator panel (30) reaches 50 psi (350 kPa) and the engine is warm, press
the SERVICE-AIR button (32) on the control panel (33).
7.
When discharge pressure gage (29) reaches 80-120 psi (550-825 kPa) turn adjusting screw (24) until throttle arm (8)
just comes off full speed stop (27).
8.
Tighten jamnut (25).
9.
Pull out SERVICE-AIR button (32) to close valve.
10. Loosen jamnut (23) and turn air cylinder assembly shaft (28) until idle speed on TACH/HOURMETER (31) on
indicator panel (30) indicates 1400 rpm.
11. Tighten jamnut (23).
12. Tighten 2 nuts (13) until distance between retaining plate (21) and seat (14) is 2.375 inches (60.3 mm).
13. Adjust collar (18) until full load idle speed on TACH/HOURMETER (31) is 2500 rpm.
14. Shut down engine (see paragraph 2-13).
TA505446
FOLLOW-ON TASKS:
• Close left door assembly.
4-48
