TM 55-1930-209-14&P-21
4-16. Drive Chain Case
a.
Removal. Remove winch drive chain case as illustrated in figure 4-6.
(1)
Drain lubricating oil from chain case.
(2)
Disconnect bellows where it joins chain case by removing nuts, bolts and washers.
(3)
Remove nuts, bolts and washers that mate chain case to backing plate.
(4)
Carefully remove fiber glass chain case to avoid damaging foam gasket.
NOTE
If gasket is damaged, replace damaged portion with foam tape of same thickness. Insure that
mating surfaces are cut at a 45° angle or more.
b.
Cleaning, Inspection and Repair.
(1)
Wash all parts with cleaning solvent and dry thoroughly.
(2)
Inspect all hardware for damaged threads.
(3)
Repair by replacement of defective parts..
c.
Installation. Install drive chain case as illustrated in figure 4-6.
4-17. Drive Chain Adjustment
a.
Remove drive chain case (Para 4-16).
b.
Lay a straight edge along faces of the drive and driven sprockets to check for proper alignment. Also check for
excessive chain sag.
c.
If there is misalignment, refer to higher maintenance. Excessive sag indicates a worn chain or sprockets.
d.
Install drive chain case (Para 4-16).
4-16
