Couplings

MIL-HDBK-1164

e)

Check Lubrication. Be sure to apply lubricant at all force-feed

lubrication fittings and grease cup fittings. Refer to the manufacturer's manual for

(1)

Once every 10 to 14 days, add two or three strokes of

grease through the force-feed fittings at the end of the shifting screw and variable shaft

to lubricate the bearings of movable discs. Shift the drive from one extreme speed to

the other to thoroughly distribute the lubricant over the disc-hub bearings.

(2)

Every 60 days, add two or three shots of grease through the

force-feed fittings that lubricate the frame bearings on the variable-speed shaft.

(3)

Every 60 days, add grease to grease the cup that lubricates

the thrust bearings on the constant-speed shaft.

(4)

Every 60 days, add two or three strokes of grease through

the force-feed fittings on motor-frame bearings. Do not use hard grease or grease that

contains graphite.

(5)

Check the reducer oil level every 30 days and add oil when

necessary. Drain and replace the oil according to the manufacturer's recommendations.

f)

Remove Unit from Service. If the drive will not be operated for

30 days or more, shift the unit to minimum speed. This places the springs on the

variable-speed shaft on minimum tension and relieves the belt of excessive pressure

and tension.

6.7.4

Couplings. Unless couplings between the driving and driven elements of

a pump or any other piece of equipment are kept properly aligned, breaking or

excessive wear occurs in the coupling, the driving machinery, or the driver. Worn or

broken couplings, burned out bearings, sprung or broken shafts, and excessively worn

or ruined gears are some of the damages caused by misalignment. To prevent outages

and the expense of installing replacement parts, check the alignment of the equipment

before damage occurs.

6.7.4.1

Checking Coupling Alignment. Excessive bearing and motor

temperatures caused by overload, noticeable vibration, or unusual noises may all be

warnings of misalignment. Realign when necessary, using a straight edge and

thickness gage or wedge. To ensure satisfactory operation, level up to within

0.005 inch (127 x 10-3 mm), as follows:

118