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TM 9-2320-364-34-4
20-171
(15) Position idler gear (1) in vise with soft jaws.
(16) Mount test fixture plate 1 and test fixture plate 2 on idler gear (1) with screw (9) and nut (10). Tighten to
90 lb-ft (122 N.m).
(17) Mount test fixture plate 3 on idler gear (1) with three washers (11), lockwashers (12) and screws (13).
Tighten to 40 lb-ft (54 N.m).
(18) Position test fixture plate 1 in vise so test fixture plate 3 faces upward.
NOTE
Pull to start gear moving must not
be less than 0.5 lb (0.23 kg) or
more than 4.0 lbs (1.8 kg).
(19)
Wrap rope several times around idler
gear (1).
(20)
Attach tension scale to rope.
NOTE
Maximum difference between
pulls in Step (21) is 2 lbs, 11
ounces (1.22 kg). If difference
between pulls does not meet
specifications, replace bearings.
(21)
Pull idler rope several times and record pull
required to start gear turning.
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