From dale_at_unofficialbmw.com Mon Jan 26 20:37:56 1998
From: Dale Beuning <dale_at_unofficialbmw.com>
Subject: Re: E30 lock replacement - help
To: mjc29_at_chrysler.com, bmw-digest_at_mailgate.wizvax.net (BMW List)
Date: Mon, 26 Jan 1998 20:37:52 -0800 (PST)
Cc: dale_at_unofficialbmw.com ()
I just did a rebuild on the drivers door lock on my 1988 325is.
The new locks cyl are a better design, the old one has
an internal ball bearing which is the failure point from concentrating
too much force on the cyl, wearing a grove, causing the failure.
The new lock cyl has a roller bearing with much more surface area
over which to distribute the load.
If you need pics of what the lock cyl is supposed to look like, check these out:
To remove the existing lock cyl:
- remove door panel
- peal back protective plastic on inside of door near the lock mech.
- using a long screwdriver, pry the C clip holding the lock in place
to the right. The C clip has a lip so it's easy to get the screwdriver
in there and twist to get it started.
- careful you don't drop the C clip
- once the C clip is out, the lock cyl comes straight out, with
a twisting, 90 deg pivot to clear the actuating arm on the end.
Hope this ASCII art makes sense
#1 o <-lock cyl
----]o[-------------outer door skin
#2 oo-l <-lock cyl
----]l[-------------outer door skin
#3 oo-l <-lock cyl
----] [-------------outer door skin
You have two choices for the lock cylinder:
- buy a whole new assembley with 2 new keys for aprox $70 from the dealer
- buy a rebuild kit that you can create a lock cyl keyed to your
car for aprox $32 from your local BMW dealer.
I chose to go this route as I hate carrying around a bunch of keys,
and it was a heck of a lot cheaper!
Keying the new cylinder
- 51-21-9-061-343 (Central locking, left side)
- 51-21-9-556-313 (all other door locks)
- insert the cylinder, reverse of above.
- be sure the actuating arm goes into it's groove
- seat the cyl against the outer door skin
- time for the C clip, you have to start it by hand
- hold the cyl in place with your left hand
- try out the lock action to insure it works correctly
- get your right hand/arm all greasy inserting the C clip
in place, just get it started, then use your trusty screwdriver
to get it seated into place
- restick plastic
- reinstall door panel
The Unofficial E36 Homepage http://www.unofficialbmw.com/e36.html
The Unofficial E30 Homepage http://www.unofficialbmw.com/e30.html
> I have a 1991 E30 four door, that the driver's door lock stopped
[ Help ]
> working. So I bought the replacement from the dealer, and started to
> replace it; however, I couldn't figure out how to remove the old lock.
> It's pretty tight around the lock, and I cannot reach it. Is there a
> trick to it? I really would like to lock and unlock my car from the
> driver's door again, and not have to admit that I cannot not do a job
> (and hence take it to the dealer). Any help would be much appreciated.
> Michael Cari