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How to change combination - Locks & Locksmithing

Posted by Debbie Manning on

  • Brad Brown Dec 18, 2017

    Hi Debbie Manning, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? On what list the make and model



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1 Answer

How reset combination lock

1. Open the lock with the factory preset combination of 0005.
2. Find the tab on the end of the part of the locking mechanism that has the numbers.
Combination Reset Tab
3. Flip the tab up (with the combination set to the open combination). When you flip the tab up, you disengage the number dials from the tumblers, so that you can reset the combination without changing the position of the tumblers.
4. Change the combination to the desired combination.
5. Flip the tab back down. The dials are now re-engaged with the tumblers.

Aug 13, 2014 | OnGuard Doberman Series Lock 8030

1 Answer

Is it possible to reset a Manifoil MkIV combination lock without having to send it away to a specialist?

Hi, by reset, do you mean you have the combination but want to change it?
If so, then you need the special combination change key that came with the safe and the instruction manual (there are copies of the manual online if you don't have that)

If the door is open, but you don't have the combination, there is a technique for finding the combination.

[email protected]

Jan 06, 2011 | Office Equipment & Supplies

1 Answer


No its a fixed combination from the factory,
you cant change the numbers or sequence.

Jan 28, 2009 | Sentry Fireproof Safe

1 Answer

Changing the combination

These sentry safes dial combinations are not built to be changed as they have no key change hole. Switching the order of the tumblers could be done by a trained locksmith. I would suggest buying the electronic sentry safes as these safes can be reprogramed.

Jan 04, 2009 | Sentry Fireproof Safe

1 Answer

Erased the code

The door must be open.
On models with the passage feature, make
sure the passage feature is disengaged: turn
knob or key should be in vertical
position (A) (see figure 14-1).
1. Insert the DF-59 control key (B) into the
combination change plug assembly (C)
and unscrew the cylinder by turning the
key counterclockwise. Remove the combination
change plug to gain access to
the combination change sleeve (see figure
2. Turn the outside knob once clockwise
(all the way, until it stops) then release.
The latch should not retract (see figure
3. Enter the existing combination. On new
installations, use the factory-set combination:
depress 2 and 4 simultaneously,
(release), then 3 (release). You should
feel a slight click as each button is
4. Insert the spanner wrench as shown in
Figure 14-2 to engage the combination
change sleeve (A). Gently turn the
spanner wrench clockwise to the stop
position (a slight click should be felt),
then turn the spanner wrench counterclockwise
to the stop position (A) (see figure
14-3). Remove the spanner wrench.
5. Turn the outside knob once clockwise all
the way until it stops, then release. The
latch should not retract (see figure 14-4).
6. Choose your new combination, write it
on page 26, then enter the new combination
— depress buttons care-fully
(a slight click should be felt as

Dec 08, 2008 | Simplex Kaba Ilco Unican 1000 keyless...

2 Answers

My master lock 1547 lock combination was changed and i cant open it

If you have the change key, you can insert into the lock and make a new combination. Only the Change Key witll allow you to change combination.

Jul 16, 2008 | Master Lock 5400d: Portable Select Access...

2 Answers

Changing the combination

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All you have to do is press program & type in the factory code 2 times & that will erase the number you created.

Then to add a new combination all you have to do is: press program followed by 5 new numbers. Then to see if they new number works, just type in the new combination & the green light should come on & you have 4 seconds to turn the handle

Apr 24, 2008 | Sentry Fireproof Safe

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