brake drum retainers F-579

1971V8 · May 8, 2018

I have an AMK Chassis Fastener Kit, 1971-73 Mustang/Cougar Disc Brake 302/351

with F-579

6 pc. BRAKE DRUM RETAINERS

(GREEN PUSH ON RETAINERS)

and I can not find them in 1971 Mustang Part and Body Illustrations for my 71 front disc

who knows where and if they (6 pieces) are to be pushed on ?

thank you

Wolfgang

Don C · May 8, 2018

They go on three of the wheel lug bolts on each side of the rear after the brake drums are put on. They are usually left off after the first brake job. They keep new brake drums from falling off before the wheels are put on.

Edit: They work fine with stock wheels, but may cause problems with some aftermarket wheels.

Jeff73Mach1 · May 9, 2018

What he said

1971V8 · May 9, 2018

What he said

Thank you- seems luxury but now it is clear !

kind regards

Wolfgang

Jeff73Mach1 · May 9, 2018

Mostly when drum brakes are serviced these are discarded. They are of no real value in daily operation of the vehicle.

midlife · May 9, 2018

Where are these parts located in the blow-out illustration? Or...what number in the illustration are these parts? Just curious...

red351 · May 9, 2018

Some of my cars I gathered way back in the late 80's still had them. Usually only one on each drum (back only). No need for them on the front.

secluff · May 9, 2018

Where are these parts located in the blow-out illustration? Or...what number in the illustration are these parts? Just curious...

midlife, I have not seen these clips illustrated in any Ford Shop Manuals or the MPC. They may be shown in some non Ford published manuals but I don't have any to look at and verify. They are listed after the brake drum applications in the text section of the Ford MPC. Ford part #356080-S32

Hemikiller · May 9, 2018

Just like the copper gaskets under the retainer nuts on the 9" pumpkin, you learn to leave them off after the first time you make the mistake of using them...

red351 · May 10, 2018

I always say no more copper, but why did Ford...So more new C washers

1971V8 · May 11, 2018

Just like the copper gaskets under the retainer nuts on the 9" pumpkin, you learn to leave them off after the first time you make the mistake of using them...

what is the disadvantage of these washers on the 9" axle. I hava a 8" type on my 71 vert?

they are included in my AMK Screw kit

red351 · May 11, 2018

Just like the copper gaskets under the retainer nuts on the 9" pumpkin, you learn to leave them off after the first time you make the mistake of using them...

Click to expand...

what is the disadvantage of these washers on the 9" axle. I hava a 8" type on my 71 vert?

they are included in my AMK Screw kit

The studs are only pressed in. So it possible for some lube to soak out and follow the stud and weep under and around the nuts. The copper washer would seal under the nut. It was needed back in the days when only a gasket was used. Today's permatex and others sealers fix that. Myself I still use the copper washers to help hold the center from shifting. High HP and stump pulling gears and sticky tires makes that possible. The copper washer is pressed in around the stud and down inside when the nut torque down. Their just a pain to get back off.

brake drum retainers F-579

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