Sargent & Greenleaf Government Combo Pad Lock 8077A

[Raymond]

The most certain and fastest way to open these locks is to drill a sight hole, determine and transfer a combination and then plug the hole. On the 8088's I have drilled the holes in different places and then swapped the back covers from one drilled lock to another. This way the drilled holes through the cover plate and the zamak body are no longer in the same place.

On those that you luckily got open, I hope you opened the change key hole door before relocking it. If the change key hole is open you can walk the wheels around with a sharp probe until they all line up and then set a new combination.

[v12v12]

Unless they're very well made, combination locks have somewhat loose tolerances, and can still be opened if you're a digit off, and sometimes more than that. Using only the even numbers, there are 'only' about 15,000 possible combinations. With an efficient method, you should be able to get the combination within six hours or so of working on it.

Lol I won't be working out at the gym that long I just wanted something with a more advanced measure of security and not have to carry a key around Vs 3-4pin masters, and crappy combo locks... I'm not paying $35+ for a used lock that should go for $17, as that's what the ended auction price was, not including the $20 S/H scam..... I'm so sick of fleabay!!!

[n2oah]

Unless they're very well made, combination locks have somewhat loose tolerances, and can still be opened if you're a digit off, and sometimes more than that. Using only the even numbers, there are 'only' about 15,000 possible combinations. With an efficient method, you should be able to get the combination within six hours or so of working on it.

Well, I would say the 8077 is a very well made lock. I believe dialing tolerances are +/- .5

[v12v12]

Okay so realistically, how much should I expect to pay for a used lock like this... I've seen lows of $17 (+$20 S/H) to $30 + S/H...??? I need to get something, this combo lock I have makes me nervous and my Master 175... what a joke since it's completely bypass-able with the... ******* trick, and I tossed it in the garbage after learning of the bypass.

[TOWCH]

The most certain and fastest way to open these locks is to drill a sight hole, determine and transfer a combination and then plug the hole. On the 8088's I have drilled the holes in different places and then swapped the back covers from one drilled lock to another. This way the drilled holes through the cover plate and the zamak body are no longer in the same place.

On those that you luckily got open, I hope you opened the change key hole door before relocking it. If the change key hole is open you can walk the wheels around with a sharp probe until they all line up and then set a new combination.

Is that why they replaced the 8088 with the 8077?

[Raymond]

They probably replaced it with the armored case as tamper resistance. The one without the case is only held together by several drive in pins arount the case. Remove these pins and the back comes off. Fill the holes with epoxy-steel compounds and the holes won't show. The biggest advantage of the S&G locks is that you can change the combo whenever you want.

If you want a really good basic combo lock try the American brand. It can be shimmed open but it is very difficult. Even if you shim it open the combo cannot be read through the shackle hole like many others.