TM 9-4910-692-14&P
2.4.
Belt Adjustment and Replacement
2.4.1. Loosen the four motor mount bolts and replace belt. Pull motor and mounting plate back until belt is
tight. Correct belt tension is indicated when belt can be moved approximately 1/2" vertically at midpoint
between pulleys. Hold motor in this position and tighten hold-down bolts.
3
PREVENTATIVE MAINTENANCE
3.1.
Lubrication
3.1.1. Gear Reducer. Gear reducer is filled to level of test plug when shipped. Check on arrival and every
six months thereafter. Fill to level of test plug. DO NOT OVERFILL. Use SAE 90 Automotive
Transmission Oil.
3.1.2.
Motors. Motors without oil cups are sealed bearing motors and require no lubrication. Motors with oil
cups have sleeve bearings which are lubricated by a reservoir filled with oil-saturated Permawick.
Lubricate every six months with 3 or 4 drops of light mineral oil such as SAE 10 W. DO NOT
OVEROIL. EXCESS OIL WILL FLOW IN MOTOR WINDINGS.
3.1.3.
3.1.4.
Elevator Guides and Cables. Grease once a month. Use No. 130 AA Lubriplate.
3.1.5.
Reversing Switch. CAUTION: First disconnect power cord from electrical outlet. Twice a year
remove cover, clean contact points and lubricate lightly with petroleum jelly.
3.1.6.
20 W.
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