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Vitality Series Selectorized Line Owner's Manual: Maintenance 40
Inspect and Lubricate Bearings and Bushings
Precor uses high quality bearings designed for strength applications and long
service life. Each week, do the following to maintain the bearings and bushings
on the equipment:
Bronze bushings: Precor recommends using a small amount of silicone
spray lubricant to lubricate these bushings, which usually support rotary
shafts. Spray directly onto the shaft, and then rotate the shaft through its
complete range of motion several times. Inspect bushings for excessive
wear and damage. Be careful when using the spray lubricant; it can stain
carpet and clothing. Wipe off any excess lubricant with a cloth.
Nylon bushings: Lubricate the nylon bushings on the guide rods by
applying a light coat of silicone spray lubricant. Spray the silicone lubricant
on a cloth, then wipe the cloth along the full length of the guide rod.
Sealed Bearing Pivot Points: These locations are protected from the
outside environment and require no lubrication. While cleaning the
equipment, wipe down the shafts and external bearing surfaces with a
cloth to prevent the buildup of dust and perspiration.
Linear Bearings: These bearings allow weight plates and other mechanical
parts to travel smoothly along guide rods. (Refer to the following figure.)
Inspect the ends of each guide rod to make sure they are fastened
correctly and all bolts are tight.
Wipe down guide rods using a light application of a silicone spray lubricant
to remove dust, hair, and dirt. Polish the guide rods using fine grade steel
wool if surface rust is present.
Important: Do not use petroleum-based lubricants.
If you lubricate the guide rods regularly, then the bearings will function as
designed. Otherwise, the guide rods may corrode. This can cause the bearings to
become clogged and jammed, leading to actual gouging of the guide rods. Be
sure to remove surface rust and oxidation from the guide rods as soon as you
observe it.
Figure 9: Typical location of a linear bearing in its housing
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