Best 7KC Series, Service Manual, Page: 32 / 41

Service and Maintenance
L
UBRICATING THE CORES
Do not lubricate cores with oil. Doing so will only attract dirt.
For powdered graphite lubrication:
Caution
For silicone type lubrication:
1. Clean all existing lubricant out of the core.
Do not mix graphite with a silicone-type lubricant.
Caution
2. With the core inverted, spray the lubricant into the key opening
allowing the spray to penetrate the pin segment holes.
Note:
When cores are installed and exposed to harsh weather
conditions, silicone-type lubricants can help displace moisture as
well as spread into pin segment holes and other surfaces.
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7KC Series Service Manual
2. Firmly press the button assembly onto the locking bar until it is
seated.
3. Reinstall the lever ( page 3–2 ).
1. Dip a key in graphite. Insert the key into the keyhole and remove it;
repeat several times.
OR
Spray graphite into the keyhole. Insert the key into the keyhole and
remove it; repeat several times.
2. Allow the graphite to sift into the pin segment holes.