TM 5-4310-386-14
4-25.
Compressor Drive Belt and Guard
This task covers:
a.
Adjust
b.
Replace
INITIAL SETUP
Tools
Equipment Condition
General Mechanic's Tool Kit
Compressor unit shut down (para. 2-13).
(NSN 5180-00-177-7033)
Materials/Parts
Compressor COG Beltguard
Compressor COG Belt
a.
Adjust. (figure 4-29)
(1)
Remove four allen screws (1) and lockwashers (2).
(2)
Remove beltguard (3) from compressor (4).
(3)
Loosen allen screws (5) and (6) and push the middle tension pulley (7) in the direction of arrow A.
(4)
Turn eccentric shaft drive gear (8) in clockwise direction until greatest resistance is felt.
(5)
Have Direct Support personnel remove 4th stage valve head and ensure piston is at top dead center.
(6)
Have Direct Support personnel install 4th stage valve head.
(7)
Pull middle tension pulley (7) outward in direction of arrow B at a force of 5.166 Ib-ft (7 NM).
(8)
Tighten all screws (5) and (6).
4-70
