TM 5-3810-207-20/TO 36C23-3-37-12
Figure 77. Swing shaft drive chain and tightener, removal and installation .
(2) Inspect the chain for breaks, bent links,
defective rollers, and other damage.
Repair the chain by installing new links
or replace defective chain.
(3) Inspect the chain tightener for broken
teeth, worn bushing, and other damage.
Replace defective chain, tightener.
Installation and Adjustment.
tightener as illustrated on figure 77.
(2) Adjust the drive chain as instructed on
(3) Install the swing gear guard (par. 149).
Section VII. MAIN AND BOOM HOIST DRIVE ASSEMBLY
The main and boom hoist drive assembly is located at
the front-left side of the crane-shovel, inside the cab.
The main hoist drive sprocket, boom hoist drive
sprocket, main drive sprocket, boom hoist shaft
sprocket, main hoist drive chain, and boom hoist drive
chain are inclosed by the main drum drive guard. The
main hoist drive sprocket and the main drum drive