DANA 30 question

Nowik35 · Sep 5, 2018

So I recently tore apart my dana 30 with the drums down to every screw. After i painted everything i wanted to Dumb me mixed up my backing plates for the drum brakes. They look identical to me but can anyone tell me I'd it matters driver side from passenger side and if it does matter how do i tell them apart??? I hate to assemble the whole hub just to find out i have to take everything apart to swop the backing plates. any help would be greatly appreciated!

Rustytruck · Sep 5, 2018

read post 12

http://classicbroncos.com/forums/showthread.php?t=277439&highlight=backing+plate+part+numbers

thegreatjustino · Sep 5, 2018

Rustytruck said:
read post 12

http://classicbroncos.com/forums/showthread.php?t=277439&highlight=backing+plate+part+numbers

That list is for the rear 9" brakes. The OP is asking about the front drums on a Dana 30.

The only difference I can potentially think of is how the wheel cylinder would mount. The fitting for the brake line would need to thread in correctly. Since wheel cylinders are typically left and right, see if they will only bolt up to one backing plate. Then check the orientation to the brake line.

Nowik35 · Sep 5, 2018

Agreed. That thread is all about this rear end

Nowik35 · Sep 5, 2018

Only problem I have is. I haven't bought the brakes yet or brake lines. Was going to put together the axle first. Get my frame rolling then install the brakes and break lines...

thegreatjustino · Sep 5, 2018

Without the brakes, putting on and taking off hubs, rotors, spindles, and backing plates, is a 30 minute job tops. Having to swap them side to side is no big deal without all the brakes and springs in place.

Boss Hugg · Sep 6, 2018

The wheel cylinders will bolt into either side. Its a matter which direction the line hole is machined in. I can't help answer the original question tho.

I will offer this tho. Compare the plates and see if you can tell if the wheel cylinder hole is offset for caster. I would expect Ford to have wanted the cylinder to mount level to the ground for bleeding purpose, but it may not be a big enough issue for them to have made two separate plates.

Rustytruck · Sep 6, 2018

Check the brake adjuster slot that would be offset. But then you have to know if the slot is towards the front or towards the rear. Please see if there are part numbers stamped in the backing plates. So we can add to the list.

migs · Sep 6, 2018

The slot for the adjuster should be towards the rear, and the hole for the brake line fitting on the wheel cylinder should face forward.
Here is a pair I rebuilt a little while back.
The backing plates are stamped with Bendix part #319020 for the driver's side and part # 317372 for the passenger side.

Nowik35 · Sep 9, 2018

Thank you! That helped i got the dana 30 all put together! I ended up putting one side hub together 3 times before I got it right and so many paper towels! It's a learning curve.

DANA 30 question

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