How To: C8A/C15 rear brake: adjustment tool?

[Phil Waterman]

Hi Hanno


Can't find my protractor to measure the angles, but here are the the measurements and the outline of the tool on 1/4" graph paper.


Cheers Phil


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[Lynn Eades]

Hanno, make sure your hand brake is backed off. Do the cables still function as they should? They need to be backed off to their maximum for your best chance. I would see if there is movement between the inner and outer cable,(both sides) and then dis-connect the cable up top.

[Jordan Baker]

Always wondered what this tool was for. I never really looked it over too closely. Now I know.

[rob love]

Another option is to drill some 3/8 holes in the backing plate right behind the brake shoe surfaces. Slip in a small screwdriver and pry the shoes away from the brake drum surface. You may be surprised at how little effort is required to unstick the shoes away from the drum, as opposed to trying to turn the drum.

Of course, that is after checking the park brake cables as Lynn suggests.

You can cover the holes with inspection plugs or weld and grind the holes shut afterwards.

[Hanno Spoelstra]

Thanks again for all the tips and info

Alex van de Wetering looked up and cross matched the lock nut number 473636 as being the same on a GMC truck. So the GMC tool should work on the C15 lock nut as well.

Will report back later!

Hanno

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[Alex van de Wetering]

Will report back later!

Please do Hanno! It seems the GMC tool is not as fancy as the one Owen and Jordan showed, but hopefully it does the trick.

Alex