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RE-Keying Instructions

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A 2.5mm Allen wrench/hex key is recommended for all padlocks. A 3/32” Allen wrench is a sutable substitute.

Quick-Change Cylinder (UCS-1,2,3,4,10)

Step 1: Remove the cylinder security screw

a. Use the key to unlock the padlock
b. Twist the shackle out of the way of the shackle cavity
c. Use a 2.5mm Allen wrench to remove the cylinder security screw by turning the screw counter clockwise

Step 2: Remove the old cylinder

a. Slide the cylinder out of the padlock

Step 3: Insert the new cylinder

a. Insert the new cylinder into the padlock, ensuring the cylinder fully seats into the padlock and is flush with the bottom of the padlock
NOTE: If the padlock is not flush with the bottom of the padlock, turn the key while applying light pressure to the cylinder to help align the driver and cylinder

Step 4: Install the cylinder security screw

a. Hold the cylinder in the padlock and use a 2.5mm Allen wrench to install the cylinder security screw, turning the screw clockwise until tightened
b. Ensure the cylinder is fully seated into the padlock and flush with the bottom of the padlock
c. Close the shackle
d. Insert the key back into the padlock and unlock the padlock to ensure it works properly

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Quick-Change Cylinder (UCS-6)

Step 1: Remove the shackle retaining screw

a. The shackle retaining screw is located on the right side of the padlock
b. Use a 2.5mm Allen wrench to remove the shackle retaining screw, turning the screw counter clockwise

Step 2: Remove the lock cover

a. Use the key to unlock the padlock and remove the lock cover
NOTE: As the cover is under tension from the shackle springs, it’s good technique to hold the cover to ensure it doesn’t pop out

Step 3: Remove the cylinder security screw

a. Use a 2.5mm Allen wrench to remove the cylinder security screw by turning the screw counter clockwise

Step 4: Remove the cylinder

a. Slide the cylinder out of the padlock

Step 5: Insert the new cylinder

a. Insert the new cylinder into the padlock, ensuring the cylinder fully seats into the padlock
NOTE: Turn the key while applying light pressure to the cylinder to help align the driver and cylinder

Step 6: Install the cylinder security screw

a. Use a 2.5mm Allen wrench to install the cylinder security screw, turning the screw clockwise until tightened

Step 7: Reinstall the cover

a. Insert the key into the lock
b. Rotate the key to the unlocked position and hold the key in the fully unlocked position
c. Replace the cover, pushing down until the cover is flush with the base
d. Release the key to the locked position and the cover will stay closed

Step 8: Install the shackle retaining screw

a. Use a 2.5mm Allen wrench to install the shackle retaining screw, turning the screw clockwise until tightened
b. Insert the key back into the padlock and unlock the padlock to ensure it works properly

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Quick-Change Cylinder (UCS-7, 81, 82)

Step 1: Remove the cylinder sleeve retaining screw

a. The cylinder sleeve retaining screw is located on back side of the padlock
b. Use a 2.5mm Allen wrench to remove the black cylinder sleeve retaining screw, turning the screw counter clockwise

Step 2: Remove the cylinder sleeve

a. Use the key to unlock the padlock and remove the black cylinder sleeve by sliding it out of the padlock

Step 3: Remove the cylinder security screw

a. Use a 2.5mm Allen wrench to remove the cylinder security screw by turning the screw counter clockwise

Step 4: Remove the old cylinder

a. Slide the old cylinder out of the black cylinder sleeve

Step 5: Insert the new cylinder

a. Insert the new cylinder into the black cylinder sleeve, ensuring the cylinder fully seats into the padlock
NOTE: Turn the key while applying light pressure to the cylinder to help align the driver and cylinder

Step 6: Install the cylinder security screw

a. Use a 2.5mm Allen wrench to install the cylinder security screw, turning the screw clockwise until tightened

Step 7: Reinstall the cylinder sleeve

a. Insert the key into the lock
b. Rotate the key to the unlocked position and hold the key in the fully unlocked position
c. Slide the black cylinder sleeve into the padlock
d. Release the key to the locked position and the black cylinder sleeve will stay closed

Step 8: Install the cylinder sleeve retaining screw

a. Use a 2.5mm Allen wrench to install the cylinder sleeve retaining screw, turning the screw clockwise until tightened
b. Insert the key back into the padlock and unlock the padlock to ensure it works properly

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Quick-Change Shackle Instructions

Step 1: Remove the shackle retaining screw

a. The shackle retaining screw is located on the back of the padlock
b. Use a 2.5mm Allen wrench to remove the retaining screw, turning it counter clockwise

Step 2: Remove the old shackle

a. As the shackle is under tension from the shackle spring, hold the shackle to ensure it doesn’t fly out. Hold the lock body with the back, retaining screw side facing you, the key in your right hand, and shackle pointing left – this will help ensure that the ball bearing and shackle spring stay in their respective positions
b. Insert the key into the lock, rotate the key (unlocking the padlock) and hold the key in the fully unlocked position
c. Remove the shackle

Step 3: Install the new shackle

a. Ensure that the ball bearing and shackle spring are in their correct positions

i. The ball bearing should be in the ball bearing cavity
ii. The shackle spring should be at the bottom of the
shackle cavity

b. Rotate the key to the unlocked position and hold the key in the fully unlocked position
c. Insert the shackle into the padlock
d. With the shackle completely pushed into the padlock body, release the key and return to the locked position

Step 4: Install the shackle retaining screw

a. Use a 2.5mm Allen wrench to install the retaining screw, turning it
clockwise until tightened

i. Note that there is no need to place thread locking adhesive on the retaining screw as it comes pre-applied with Nyloc

b. Insert the key back into the padlock and unlock the padlock to ensure it works properly

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Now it’s easier to protect your workplace and your lifestyle.

When your security needs grow, so does your need for padlocks. Typically, that means carrying around more keys, or going through the time-consuming process of re-keying your padlocks. But with Paclock’s Universal Cylinder System, you can easily expand your security system whenever necessary, all on the same key.