TM 55-4920-227-15
CHAPTER 3
OPERATIONAL AND ORGANIZATIONAL MAINTENANCE INSTRUCTIONS
Section I. SPECIAL TOOLS AND EQUIPMENT
There are no special tools or equipment required for the maintenance of the test stand.
Section II. LUBRICATION
(2) Inject new grease into each of the bearings
29. General
This section contains a lubrication chart (fig. 12)
as shown in figure 13 until all evidence of
which is supplemented by the detailed lubrication
the old grease 'has been forced out of the
information contained in paragraph 30.
bearing drain plug holes.
(3) Run unit for approximately 5 minutes to
relieve bearings of any excess grease, and
30. Detailed Lubrication Information'
a. Care of Lubricants and Lubricating Equipment.
replace drain plugs.
Keep all lubricants in closed containers and store in a
clean, dry area away from heat. Do not allow dust, dirt,
Note. Lubriflush bearings yearly or
water, or other foreign material to come in contact with
at 1000 hour intervals whichever occurs
the lubricants. Keep all lubricating equipment clean and
first.
ready for use.
b. Cleaning.
Use a cloth dampened with an
f.
Gearcase.
approved cleaning solvent, and wipe all fittings and
(1) Refer to figure 12 and remove the oil drain
surfaces surrounding the point of application, before
plug. Drain the gearcase and install the
applying the lubricant.
plug.
c. Points of Application. Location of the lubrication
(2) Refer to figure 12 and remove the oil filler
fittings, oil plugs, and the recommended lubricants are-
plug and the oil level plug. Fill the gearcase
given beneath each illustrated lubrication point (fig. 12).
with the proper lubricant until it begins to
d. Operation .After Lubrication. Operate the unit
flow from the oil level hole. Replace the
for 5 minutes immediately after lubrication. Inspect the
plugs.
movable varidiscs for any surplus grease forced out
(3) Operate unit immediately after lubricating as
around the shafts, and remove all surplus lubricant.
described in d above.
Inspect the gear case for leaks and correct as
necessary. Stop the unit, wait 5 minutes and check the
Note. Change oil after the first week
oil level. Add oil if necessary.
of service and at 500 hour intervals
e. Lubriflushing:
thereafter.
(1) Remove the drain plug from each of the
blower and varidrive motor bearings which
indicate lubriflushing (fig. 12).
AGO 6729A
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