924Board.org

Chrenan · Joined: 15 Jan 2003 Posts: 3903 Location: Canada

I installed a replacement hatch for my seperated and leaking rear glass today. The replacement came from a 951. When I turn the hatch release key, the new hatch will come up a bit, but it won't totally release. No matter how hard I pull, it won't open. If I loosen the mounting bolts on the leading edge of the hatch I can jiggle it open.

Any ideas? Is this a symptom of the hatch pegs being too long or short? Is there any ajustment in the release mechanisms that might allow them to open more and release the pegs? Looking for any tips that may speed up my trouble shooting. Thanks guys.
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1987 951 - M193 Version for Japan

J1NX3D · Joined: 06 Feb 2003 Posts: 1333 Location: New Zealand

Are the new hatches prongs and lock assembly the same as the old hatches?
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'86 944

Chrenan · Joined: 15 Jan 2003 Posts: 3903 Location: Canada

I measured the hatch prongs with a caliper, the cone on the end of each prong is the same on the new and old. The lock assembly has not been replaced, same before and after.
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1987 951 - M193 Version for Japan

StienbargerR · Joined: 28 Oct 2005 Posts: 1362 Location: Richmond, IN

I have a similar problem every now and then with mine. My technique, which you may have already tried is pushing down hard on one side, and then try to pull the other side.

When I replaced my hatch, my pins seemed to settle into place over time, maybe if you drive it around for a few days it might start being easier to open.

Ryan
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1978 924 NA
-250lb lowering springs, Euro Pistons

Ozzie · Posted: Mon Jun 11, 2007 12:19 pm Post subject:

The catches the pins go into are moveable (a bit tight though) after you loosen off the nuts.
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Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

RC · Joined: 25 Mar 2007 Posts: 2637 Location: Australia

The catch assembly mounted on the body has enlarged holes to allow for adjustment. It may be necessary to crawl inside your rear with a 10mm spanner and loosen the nuts to move the catch while an assistant turns the key and lifts the hatch.
Found this a real PITA but they can be adjusted.
Also if the rubber cone in the bottom of the catch is shot the pins wont centralise well and tend to catch on the locking arm when released. And it will rattle over bumps too.

Roger

Chrenan · Joined: 15 Jan 2003 Posts: 3903 Location: Canada

Thanks for all the tips guys, definitely some things to try. I think I may start with trying to adjust the receivers a bit, sounds like a bit of chore, but it will be nice to get it working.
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1987 951 - M193 Version for Japan

Mike924 · Joined: 12 Aug 2004 Posts: 2601 Location: IoW UK

If you slacken off the recivers a bit, then gently lower the hatch, the pins will help to locatate and centralize the catches (a bit of jiggling may be required). Then all you have to do is tighten the nuts without letting the catches move...

It's quite a fiddly adjustment. You may need a few goes before you get it 'right'. I did!

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1985 Porsche 924 'Lux', Kalahari Beige (my ex)
1993 Porsche 968 Coupe, Midnight Blue, 6 spd

'There is no substitute for a little grease under your fingernails.' - Chrenan, 924board.org

PORSCHEV · Posted: Mon Jun 11, 2007 7:42 pm Post subject:

I would say that it's not your recievers..you didn't move them. But you did add a new seal which will be thicker the the old worn out one. I would try extending the catch pin a few threads.
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1976 924
5 lug conversion, 17'C2 wheels,custom body work,327 vette engine.

1978-#53 "D" track racer.

Vince Ponz · Joined: 02 Nov 2002 Posts: 3581 Location: Florida

10mm and loosen the catches. A little difficult doing on your back. Do not twist the hatch. You may damage the glass/frame adherence???
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"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock

Chrenan · Joined: 15 Jan 2003 Posts: 3903 Location: Canada

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

When I did mine, I located the hatch without the pins installed, and of course without the shocks hooked up. I sorta wiggled and pressed down on the hatch until it was laying in the seal the way it wanted to, then tightened it up, then installed the pins.

You might also lengthen the pins a bit before you try to latch again. When they get hung up in there, it's because they are too tight. . .IMO the correct adjustment allows for 1/8 inch or so of "give" in the seal when you press down hard on the rear of a latched hatch.

rasta
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

Chrenan · Joined: 15 Jan 2003 Posts: 3903 Location: Canada

Thanks Rasta, good tips.
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1987 951 - M193 Version for Japan

Lizard · Posted: Tue Jun 12, 2007 3:18 am Post subject:

are you sure that the hinges are in the right spot as they have movement there too.
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3 928s,