Master Lock M930 - Security Pin Query

[ChonkyTonks]

Hey all,

Long time listener, first time caller. I wanted to know if anyone on the forum has looked at the internals of the Master Lock Magnum m930 (M930XDLH). I purchased it a few nights ago and, based upon movement in the cylinder, I am thinking that there is at least one security pin inside. Once that pin goes, I get an easy movement on the torque wrench, but it feels like game over after that. I am trying do pick this with my half diamond and short lifter to practice my spp. Overall, this feels like the typical security pin trap, thus my question about the internals and how many security pins (and type) there are in the Master Lock Magnum M930.

I look forward to your replies.

Thanks,
ChonkyTonks

[ChonkyTonks]

One of the cool things about this lock is that you can re-key it. I ended up unscrewing the allen bolt (7/64) and pulling the cylinder. You can pop out the pins and then (carefully), move the plug so that it aligns for removal, pound the plug out of the cylinder. Unfortunately, I ended up ruining all but one of the springs, but at least I now know that the Master Lock M930 has spindle pins in each plug chamber.

If you want any pictures, I took a few from the dismantling process and also some macros of the spindles/pins, as well.

-ChonkyTonks

[ChonkyTonks]

I now know that the Master Lock M930 has spindle pins in each plug chamber.

spool pins...

[Lucky Devil]

Older post, new questions relating to the cylinder movement he's talking about.

On mine there's two distinct differences in movement. The first when I rake it, the plug moves a fraction of the way then stops but isn't forced back to reset postion. After hitting the other pins the lock will turn and open, but the force apllied to turn to the key stop almost feels like it's off center. Is this because of the spring that resets the plug? Using the key to unlock it, the tension against turning is consistent.

Is there a way (sop) for identifying the types of pin stacks before taking the lock apart? And does this even matter whether spool pins or not they have to be in correct position to open? Another pin question is on a disc padlock (storage type) that has (Ibelieve it's called) deep pin stack/cut. Can that be ID'd by putting tension then seeing which pin won't go down, then using less tension to pick? Thanks for your time.

[entr0py]

One of the cool things about this lock is that you can re-key it. I ended up unscrewing the allen bolt (7/64) and pulling the cylinder. You can pop out the pins and then (carefully), move the plug so that it aligns for removal, pound the plug out of the cylinder. Unfortunately, I ended up ruining all but one of the springs, but at least I now know that the Master Lock M930 has spindle pins in each plug chamber.

If you want any pictures, I took a few from the dismantling process and also some macros of the spindles/pins, as well.

-ChonkyTonks

I just posted a question on this very same lock. I am able to pick it so the plug turns almost 180 degrees but will not open. I'm not sure what i'm missing...

[Rusty_Shackleford]

Have you tried pulling on the shackle when the plug is turned?