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 TM 55-1905-220-14-10
5-19.2. IDLER GEAR - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
TEST (Cont)
2. Attach the third plate to the
idler gear hub with three 3/8"-
16 bolts. Tighten the bolts to
25-40 lb-ft (33.9-54.2 NY ) torque.
m
3. Clamp the idler gear assembly and
fixture in a vise.
4. Attach a cord to the idler gear
and spring scale and check the
bearing pre-load as outlined in
step e 4.
g. If the scale reading is within the
specified 1-1/4 to 6-3/4 lbs (5.56 N
to 30.03 N) specified but fluctuates
more than 2 lbs. 11 ounces (11.98 N)
the idler gear and bearing assemhbly
must not be installed on the engine.
Fluctuations in scale reading may be
caused by the races not being concen-
tric to each other, damaged races or
rollers, or dirt or foreign material
within the bearings. In these cases,
the bearing should be inspected for
the cause of fluctuation in the scale
readings and corrected or a new bearing
installed.
5-354
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