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Precor CW 813 Manual

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General Safety and Maintenance Manual: Weekly Inspection 19
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 the bushings. Spray directly
onto the guide rod and then rotate the guide rod 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 clot, 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 guide rods and external bearing
surfaces with a cloth to prevent the build up of dust and
perspiration.
• Linear Bearings: Case hardened guide rods are used in areas that
use linear bearings (refer to Figure 10). Inspect each end of the rod
to ensure they are fastened correctly and all bolts are tight.
Wipe down rods using a light application of a silicon spray lubricant
to remove dust, hair, and dirt. Polish the guide rod using fine grade
steel wool if surface rust or oxidation is present.
Important: Do not use petroleum-based lubricants or motor oil.
These lubricants tend to cause a rapid buildup of dirt and hair on
the weight plates, which can cause the plates to stick together.
If you lubricate the rods regularly, then the bearings will function as
designed. Otherwise, the rods may corrode, which can cause the
bearing to become clogged and jammed, leading to the bearing
actually gouging the rod. Be sure to remove surface rust and
oxidation from the hardened rails immediately.
Figure 10: Shows a typical location of a linear bearing in its housing
… 33 …


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