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Took my door lock pump apart. Pretty obvious what the problem was...

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Old 11-15-2004, 07:10 PM   #1
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Default Took my door lock pump apart. Pretty obvious what the problem was...

See my earlier thread from today to see what the symptoms were. I VAGged the central lock system and found 01367 - central locking pump runtime exceeded (likely leak).

So, I located the pump, hit the remote a few times, and confirmed that it still had power (could hear the mechanical sounds trying to do something). Checked some of the visible hoses for leaks, but didn't find any. So, I pulled the pump out and decided to take a peek inside.

Popped off the cream colored top, pryed up the circuit board, removed the three screws holding the cylinder thingy together, and removed the top layer. Here's what I found:



See all those broken pieces inside of the outer ring? Doesn't look right... Dumped it all out, and look at all of the pieces:



Some kind of residue is all over my hands now - seems like it might be graphite? Here's the bottom plate:



So, if I could find a way to replace the thing that broke from the center of the two plates and the outer ring, I should be in business. Any ideas? The wear patterns on the plates seem to indicate that this thing is supposed to spin around inside. Maybe the friction somehow generates the vacuum? I don't even know what this thing was supposed to look like when new.

I have a feeling that I'm going to get stuck buying a new part, though...
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Old 11-15-2004, 07:20 PM   #2
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Default LOL!

Funny how this works...you look at it, it's so simple, but where the hell are you gonna find a piece that you can substitute. Your brain says "I'm not paying $500 just because of one tiny little broken bit"...and a week later, you're spending $500. Call some of the places in my parts thread, and see if they can get it for less.
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Old 11-15-2004, 07:25 PM   #3
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Default Are you still under warrenty? I just had mine replaced for free about 2 weeks ago.

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Old 11-15-2004, 07:32 PM   #4
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Default same problem here but fixed

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Old 11-15-2004, 07:37 PM   #5
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Default 200 miles ago...

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Old 11-15-2004, 07:39 PM   #6
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Default I pieced together all of the broken bits, and they form a disc...

with four rectangular plates radiating out from center. I think the disc is plastic, and the four rectangular plates are what is rubbing on the top/bottom plates. I tried putting it back together without the broken disc in there, but that didn't do any good.
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Old 11-15-2004, 07:50 PM   #7
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Default This post should be nominated for the most boring/useless post of the year.

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Old 11-15-2004, 09:09 PM   #8
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Default Try the junk yards?

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Old 11-15-2004, 09:26 PM   #9
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Default Maybe put the pieces back together, take it to a plastic shop, have them machine a new piece?

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Old 11-16-2004, 03:31 AM   #10
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Default Wow! OWK...if you end up finding the part...can you get some extras?

This failure is pretty common on older A4's, and will eventually be pretty common here. Great link TipSter!!!
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Old 11-16-2004, 03:57 AM   #11
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Default Looks like the TurboLady got lost and hit your lock pump instead. :)

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Old 11-16-2004, 05:22 AM   #12
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Default Yep - that looks like exactly the type of mechanism we have here.

Hmmm - dip into the extended warranty, buy a new pump and be done with it? Or spend lots of time trying to source the replacement part?

Maybe I'll do both and keep the replacement part as a backup if I get one.
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Old 11-16-2004, 05:23 AM   #13
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Default *yawn*

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Old 11-16-2004, 05:52 AM   #14
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Default :-) Maybe it's her sister, the Pump Lady...

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Old 11-16-2004, 05:53 AM   #15
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Default I can get it 90% back together, but the center seems pretty well shattered.

The toothed axis thingy that sticks up out of the pump apparently is meant to spin the disc thingy, and both are missing pieces. Without one reference point, it would be hard to fab up a new one.
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Old 11-16-2004, 05:55 AM   #16
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Default I have the same DTC. Maybe I'll take a look some day when I'm really bored ;-)

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Old 11-16-2004, 05:55 AM   #17
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Default I just emailed the U.S. rep to inquire about getting the parts.

I'll follow up here if it leads anywhere.

Maybe this will lead to the start of KenobiTuning.
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Old 11-16-2004, 06:21 AM   #18
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Default If your pump still works, maybe take it apart now to see whether it's close to failure.

That pump assembly comes apart with only three phillips screws, and it's not very complex. You could easily crack it open to take a peek and then put it back together with little effort.

I'd love to have a picture of the part intact...
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Old 11-16-2004, 07:18 AM   #19
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Default Pump Lady?

TPIWWP?!
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2005.5 A4 Avant 2.0T Quattro 6MT
APR 91/93/100 | APR Exhaust | 19" BBS RS-GT's | Carbonio | Hotchkis | Partridge-in-a-pear-tree
Others:
2006 TL on the block
2001 S4 sold
2000 A4 sold

*** September 11th, 2001 - Never Forget ***
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Old 11-16-2004, 08:20 AM   #20
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Default Exactly my point.

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Old 11-16-2004, 08:20 AM
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2000, 2001, a4, a8, audi, central, door, graphite, lock, locking, parts, power, problems, pump, rear, repair


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