Maintains constant chain tension on main drive chain
NSN 5990-01-042-1984
NSN 5910-00-843-9157
NSN 5925-00-937-1586
NSN 5835-01-492-4318
NSN 6610-01-288-2339
NSN 5965-01-322-3271
NSN 5996-00-454-7938
NSN 6220-00-452-5308
NSN 7035-00-973-9215
NSN 6685-00-177-6491
NSN 5930-01-128-6433
NSN 6240-00-225-5128