924Board.org

isuras2 · Joined: 17 Jun 2005 Posts: 458 Location: Phoenix, AZ

I finally put the rear brakes back together with the new hardware and shoes. The only thing that seems to be different is the e-brake. Before I messed with the brakes, the e-brake handle could be pulled up about 2-3 clicks at most and the wheels would not turn at all. Now I can pull the e-brake all the way and each wheel can still turn, although there is more resistance, but still can turn. The only thing I can think of is that I disconnected the e-brake stuff from the backing plate on the left side, then reconnected it. Other than that, everything has stayed the same. Any thoughts or suggestions as to what to check/try next?
Thanks,
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Rob
'80 931 (sold)
'80 924 NA (sold)
Former Omaha Crew

djeviltwin · Joined: 13 Jun 2006 Posts: 29 Location: Northern CA

I haven't gotten into the brakes on my 924 as of yet, but I have dealt with brake issues.

There should be a tension control on the brake line. When reconnecting brakes this can pick-up slack. I look for that adjustment first.
~E
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1982 924 ~pics coming.... soon

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

Drum rear brakes on a 924 ARE NOT SELF ADJUSTING.

That means that YOU are responsible for adjusting them tight each month so the brakes will work when you step on them, and when you pull the parking brake handle.

When you replace the braking brake shoe, YOU must center and adjust each of the four brake shoes (two on each side). There is a star wheel for each brake shoe (two on each side).

When you first replace or when you disturb the position of the brake shoes, they will no longer be centered under the brake drum. You need to center them as best as possible, then replace the axle nut and torque it, then go inside the car and step on the brake pedal. Now you need to addjust each brake shoe till it can't turn, then back off the adjustment until the each sho can barely turn while dragging when you spin the drum by hand. Now, you go back into the car and step on the brake pedal again to recenter the brake shoes. Now adjust the brake shoes again. floow this procedure about 3-4 times. When you can step on the brake pedal, and the adjustment does not change (you don't have to tighten any of the brake shoes, then you are done with the brake shoe adjustment.

Now, pull the parking brake lever up 3 clicks. The brakes should big dragging, and hard to turn, but you should still be able to turn them. Pull the handle up two more clicks. The rear brakes should not be locked up tight. If they aren't replace the parking brake, and tighten the parking brake cable about 1/8 of a inch at the adjustment barrel on the rear of the parking brake handle and retest. Keep tightening the cable by 1/8" of a turn until the parking brake drags at 3 clicks, and is locked up tight at five clicks.

The adjustment of the rear brake shoes needs to be checked and adjusted every 4-6 weeks to keep the brakes tight and the brake pedal high.

torro · Joined: 07 Jun 2006 Posts: 61

Was it not the earliest models ->77,5 that did not have self adjusting brakes?
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-=Torro=-

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

Any 924 with 4 bolt suspension does not have self adjusting brake drums. You need to adjust them regularly, it is a beginning of every summer job for me.
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1987 951 - M193 Version for Japan

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

When I had drum brakes on my 77 and 81, and was driving them 3K miles a month, I had to adjust the brakes every 3 to 4 weeks.

Stampedetrail · Joined: 29 May 2005 Posts: 274 Location: Fairbanks, Alaska

Hmmm, while we're on the topic, how difficult is it to switch out drums for discs, on say a scale of 1-10?
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1977.5 924 "Martini" head / New Old Stock rebuild
1985.5 944 Why? Because I can.

Ozzie · Posted: Sun Jun 18, 2006 10:30 am Post subject:

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

Ozzie, I can tell you that I have never seen self adjusting rear drum brakes on a US market 924. That's on dozens of 924s that I have seen and the two that I have owned.

Perhaps self adjusting brakes were supplies on cars sent to other markets. I know that some people in Europe have reported that they have self -adjusting brakes, but I have never seen it confirmed with photos.

Stu2j · Posted: Sun Jun 18, 2006 11:35 am Post subject:

>>>The adjustment of the rear brake shoes needs to be checked and adjusted every 4-6 weeks

O'cmon... that ain't never gonna happen. My brakes get inspected and adjusted (if necessary) on an annual basis as part of the state inspection and I've never had a problem.
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-Stu
924 owner since 1988
924S owner since 2002
Click here to view them:

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

Ozzie · Posted: Sun Jun 18, 2006 1:11 pm Post subject:

I stripped down my rear brakes, the shoes were fine but the cylinders needed overhaul.
I can assure you the adjuster is on my car.
part no 113 609 854
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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

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

I don't doubt it, but don't you have an 84? That was 2 years after they stopped selling them here, the self adjusters may never have been available in N. America.
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1987 951 - M193 Version for Japan

Ozzie · Posted: Sun Jun 18, 2006 1:35 pm Post subject:

Pet shows it all models
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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

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

You have to be carefull which PET you look at. There is a N. American and Euro version.

In the Euro version, you can see item 29 (part # 113 609 854) in the lower part of the picture, and also cited on the parts list on the second page.

However, in the N. American version, while item 29 still appears in the lower part of the picture, it does not appear on the parts list on the second page.

The top portion of the picture in both versions of PET is the rear brake drum assembly I recognize, with the non-self-adjusting setup. The self-adjusting setup in the lower portion of the both pictures is cited as available on "S" models (obviously not the 924S with the 2.5 litre as they were rear disc). I'm not sure what the "S" refers to in this case. There were some 924S cars in the 2.0 version, they had a few extra options, and I thought the 931 disc brake setup was part of the package, so I am lost as to what "S" means in this case.
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1987 951 - M193 Version for Japan