Master Lock 48mm-Wide Laminated Magnum Steel Keyed Padlock with 38mm Shackles, Black

Regular cleaning and lubrication every 3-6 months is recommended to keep your locks operating like new. Locks used in extremely dusty or corrosive environments should be cleaned and lubricated every three months. Regular lubrication will also help minimize freezing in cold weather environments.

1. To clean the lock, use pressurized air to blow all dust out of the keyway and shackle openings.
2. For optimal performance, lubricate your lock with a PTFE Lock Lubricant.
3. Lubricate both the keyway and the shackle. Use also to lubricate internal components of rekeyable locks.
4. Apply lubricant sparingly. A very light spray(aerosol) or a few drops (pen oiler) is all that is needed.
5. Allow lubricant to drain deep into the lock. Tapping the lock on a table will distribute the lubricant inside the lock and loosen frozen or sticking parts.
6. After application, insert the key and open and close the lock several times to distribute the lubricant. Wipe excess lubricant off the lock, shackle and key. Let the lock air dry. Once dry, the lock is ready to be put back into use.
7. NEVER use dry graphite, or a silicone lubricant. Graphite is often applied in excess, which interferes with part movement.

Sorry for the experience with your lock. If you would like to provide additional details, please contact us at 1-800-308-9244.