American Dryer Corp. MD-170 - Manual (Page 46)

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B. ADJUSTMENTS
7 Days After Installation and Every 6 Months Thereafter
Inspect bolts, nuts, screws (bearing set screws), non-permanent gas connections (unions, shut-off valves,
orifices, and grounding connections). Motor and drive belts should be examined. Cracked or seriously
frayed belts should be replaced. Tighten loose V-belts when necessary. Complete operational check of
controls and valves. Complete operational check of ALL safety devices (door switch, lint drawer switch,
sail switch, burner, and hi-limit thermostats).
C. LUBRICATION
The motor bearings, idler bearings...and under normal/most conditions the tumbler bearings are permanently
lubricated. It is physically possible to relubricate the tumbler bearings if you choose to do so even though this
practice is not necessary. Use Shell Alvania #3 or its equivalent. The tumbler bearings used in the dryer do not
have a grease fitting. Provisions are made in the bearing housing for the addition of a grease fitting which can be
obtained elsewhere, or from the manufacturer by ordering kit Part No. 882159, which includes two (2) fittings.
90 DAYS
Re-grease the two (2) 1-3/8-inch bearings that support the impellor/fan shaft. Use Shell Alvania #3 grease
or its equivalent. Impellor/fan shaft bearings should be lubricated.
Check to make sure that the set screws on the impellor/fan shaft bearings are tight.
Remove lint from around tumbler (basket), drive motors, and surrounding areas. Remove lint from gas
valve burner area with a dusting brush or vacuum cleaner attachment.
IMPORTANT: TO PREVENT DAMAGE, AVOID CLEANING OR TOUCHING IGNITOR
and FLAME-PROBE ASSEMBLY
Remove lint accumulation from inside control box and at the rear area behind control box.