924Board.org

79porsche · Posted: Wed Jan 03, 2007 7:30 am Post subject: Why do door check straps break?

Working on my 924 going from one issue to the next...and making progress. One of the next is two broken door check straps. Is this a common issue...and if so....why would they break. I see no reason why these check straps should be broken.

I'm definately going to need to replace these asap.

Smoothie · Posted: Wed Jan 03, 2007 8:28 am Post subject:

Door stop straps are a secondary failure part - something else has to go wrong first, then the straps fail. It happens like this...something breaks - waterpump, fuel pump, whatever, leaving the car and occupants stranded on the side of the road 10 or more miles from home. Then both doors fly open with excessive velocity and the straps break as the PPOO (previous pissed-off owner) and PPOOPSO (previous pissed-off owners' passenger seat occupant) exit the car, each in a huff.

Mine are still good (my PPOO obviously preferred punching out the dash and elbowing the center armrest), but door strap failure isn't too unusual.
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"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

kojab · Joined: 02 Nov 2002 Posts: 61 Location: Sydney Australia

My drivers side (RH) has broken too. I did notice that the passengers door was getting very hard to close and lubricated the door check strap with grease. What a difference a bit of lube makes. Also noticed how badly worn the surface of the check strap was. Maybe they break because the surface hardening is removed from lack of lubrication which then allows them to possibly stretch and then break.

Where can I buy one of these straps?

Richard

JB 924 · Joined: 03 Apr 2006 Posts: 606 Location: Hessen, Germany

The one on my other car is broken on the driver's side, too. It's because they don't get lubricated, and once the mechanism fails, it can actually rip the door like it had on my 924, and also the Bimmer.

79porsche · Posted: Thu Jan 04, 2007 5:48 am Post subject:

Are the fasteners which hold the strap to the pillar and door a 5 mm (12 point) fastener? Whatever they are...I don't have one.

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

Its metal fatigue from the low grade pot metal stretching every day for 20+ years.
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

79porsche · Posted: Thu Jan 04, 2007 7:27 am Post subject:

The bolts that hold on the check strap are triple square (12-point) fasteners....but not sure what size.

Llamaguy · Joined: 02 Jul 2003 Posts: 711 Location: Indiana

Nobbi · Joined: 24 Aug 2006 Posts: 1396 Location: Germany

On my car all two to get broken and i removed the complete mechanic-stuff from the doors too.I can tell you that heavy stuff makes the diffrence...
(German word for check-strap is Tuerfangband)

Driving without makes live easier.....

Nobbi