141d master lock

[des804]

it seems to only have 3 pins I cant get a picture sorry... has anyone heard of these locks they are bronze color with black plastic around them that say master lock I have two that I can not open no matter what I try. also is there a way to actually cut them open without damaging the device inside them or are they built in basically.

[Shrub]

I dont know about them but if you can set the pins try pushing somthing against the back of the lock as well as the key may actually push somthing in at the rear (oh err missus)

[Mad Mick]

Do a search for the #140.....it's basically the same lock, but without the 'attractive' plastic cover.

I took one apart many moons ago, here: (Scroll down a bit, past the #3 method.)
viewtopic.php?t=1890

Skold (and Hojo) also co-erced similar locks to come apart, by heating the lock and then dunking it into cold water:
viewtopic.php?t=4001

BTW, to see your lock on the Master website, go here, then type your lock No in the "Enter a product number" box:
http://www.masterlock.com/cgi-bin/select.pl

FYI, the 140 is the basic lock. Other variants of this lock use different third numbers, i.e. your 141. There are other colours available, each with a different third number. Basically, from '0' to '7'. '0' is the naked lock, 1 through 6 are the different colours, and '7' is a chrome-plated variant.
The different keyings (alike/different) are indicated by letters after the model number...such as your 'd', along with other letters indicating whether the locks are single, multi-packs, or have different shackle lengths.
Also, the size of the lock is indicated by the second number. Your lock is in the middle of a series. The 13? series is smaller, and the 15? series is larger.

Have a play with the Master site...it may help you choose your next practice lock. Look for a rekeyable product.

HTH.