HELP - trying to put a 5pin tumbler lock back together

[djdave022002]

Evening,
Would realyl appreciate some experience here - ive spent 3 hours putting a 5pin tumbler lock back together - incredibly fiddly as im sure you know! and finally ive done it but perpendicular to the 5 pins is a much smaller pin, it sits in a channel on the outside of the inner cylinder and its sprung, it points out the back of the lock barrel into a teethed ratchet - when i put teh lock together with this small sprung pin, it stops the inner cylinder from turning ? i cant see what its for but i assume it si important but cant find out how/where to put it ?

Thanks in advance.
Dave.

[keysman]

The make of the lock and perhaps a photo would be very helpful.
you can upload a photo to tinypic.com

[djdave022002]

Evening,
Appreciate the response, there is no make or model on the lock, but ive uploaded photos on below links (Lock2.jpg shows the pin out the back of the barrel) :

http://www.davidjlittle.co.uk/images/Lock1.jpg
http://www.davidjlittle.co.uk/images/Lock2.jpg
http://www.davidjlittle.co.uk/images/Lock3.jpg
http://www.davidjlittle.co.uk/images/Lock4.jpg

[keysman]

The pin you are asking about keeps the cap ( the part with the teeth) from coming loose.. it looks like you have it assembled correctly.
Depress the pin with a straightened out paper clip and turn the cap to loosen or remove. To reassemble:
tighten the cap with the pin depressed just until it stops. Reverse 1 tooth. done

[djdave022002]

Thankyou for your repsonse, i really do appreciate the help, this is teh first lock ive ever tried to fix - Ive managed to put the lock back in the door and it does work, but it seems that when the lock is out of the door the key is stiff to remove (but still removeable) but when the lock is fixed in the door handle assembly, its incredibly hard to remove (ive only managed to remove it once) - any ideas what this could be ?

[Squelchtone]

Thankyou for your repsonse, i really do appreciate the help, this is teh first lock ive ever tried to fix - Ive managed to put the lock back in the door and it does work, but it seems that when the lock is out of the door the key is stiff to remove (but still removeable) but when the lock is fixed in the door handle assembly, its incredibly hard to remove (ive only managed to remove it once) - any ideas what this could be ?

You've either put a pin in upsidedown (the \_/ portion of the key pin should be touching the key, not the |_| square portion) (the flats of the key pins should be touching the driver pins that are pushing against them), or the cap in the back is not on tight enough and there is play in the cylinder allowing the plug to pull away slightly out of the shell and thus making the key difficult to remove.

Here is how the pins should interact with the key in order to put the key in and remove it smoothly and easily:


Squelchtone

[2octops]

The screw on cap is usually the problem when it's difficult to remove the key.

When you install that cap, tighten it until it bottoms out finger tight, then back it off 2 notches.

If it is to tight, it will rub on the back side of the cylinder housing causing the key to be extremely hard to turn.

If it is to lose, then the plug actually tries to pull out of the housing with the key causing the pins to bind inside the bible, making it so that you can not remove the key.

Simple, easy test to see if the cap is loose without remove cylinder from lock. Insert key, try to remove key. If the key seems stuck, press in on the face of the cylinder while pulling out on the key. If the key slides out easily, tighten the screw cap.

[djdave022002]

Thankyou all for your assistance, it seems to be working now!

[raimundo]

2octops has accidentally mistated his advice

where he says press on the cylinder, he actually meant press on the plug, in fact hold the pliug
into the cylinder,

its being pulled out a millimeter or two then the pins can no longer access the
bible of the cylinder and depending on the location of the low cuts and the height
of "teeth" that occur between the cuts

it is possible to have a key that will pull out if the low cuts are all toward the tip \
of the key and the "teeth" are low or non existant, ......but..... if you have a key cut
like this change it, it will cause interesting problems, such a key can be pulled out of the
lock when the plug is turned, it happened to me in a rented space, I lock the door and turn away
from it while simultaneously turning to walk away,
when I return, the lock appears picked, .....but not in the direction that would open it,
the key simply came out before the pins locked up, and left the lock in a condition that most of
us would consider picked,