TM 5-4310-451-14
5-40. IDLER GEAR MAINTENANCE (Con’t).
NOTE
Pull required to start Idler gear moving must be at least 0.5 lb (0.2 kg) but less than 4.0 lb (1.8 kg).
15
Wrap A in. (3.18 mm) thick lint-free cord around
idler gear (3) several times and attach to spring
scale.
16
Keeping a steady pull on cord, pull cord several
times and note scale reading to start idler gear
(3) turning.
17
A pull between 0.5 and 6.0 lb 12 oz (0.2-3.1 kg)
is acceptable as long as the maximum pull differ-
ences between pulls Is not more than 2.0 lb 11
oz (1.2 kg).
18
Scale reading of more than 0.5 lb (0.2 kg)
indicates worn bearings.
19
Scale reading of more than 6.0 lb 12 oz (3.1 kg)
Indicates binding of rollers or improper
assembly.
20
Scale fluctuations between pulls of more than
2.0 lb 11 oz (1.2 kg) indicates binding of rollers
or Improper assembly.
21
If any of the readings In steps 17 through 20 are not met, disassemble and repeat steps 1 through 20 of
subparagraph d.
22
Remove three screws (25), lockwashers (24), washers (23), and test fixture plate (18) from idler gear (3).
23
Remove nut (22), screw (19), and two test fixture plates (20 and 21) from idler gear (3).
5-142
