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  #1  
Old 15-10-19, 00:31
Jordan Baker's Avatar
Jordan Baker Jordan Baker is offline
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Can you fit a drift in the hole then hit that with a mallet? It might get things moving. It sounds like you are due for some replacement parts.
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  #2  
Old 15-10-19, 01:45
rob love rob love is offline
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Did it not work because the angles were not right, or because the adjuster is siezed? If siezed, spray a little penetrating oil at it through the little hole, using the straw that comes with most oil spray cans, and let it sit for for a few days. You will have to clean the drum and shoes afterwards with brakecleaner or alcohol.

If it is the angle of the adjusting tool, then heat the tool with a torch and bend it to the angle you need.
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  #3  
Old 15-10-19, 13:55
Phil Waterman Phil Waterman is offline
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Default Special tool #27257

Hi Hanno

I made it because non of the commercial ones worked. Made from some key stock heated and bent to shape.

Will take a better photo with dimensions and angles.

If you wonder about the Special Tool # 27257 I have a tool drawer where I put all the tools I've made over the years for the CMPs.

Cheers Phil
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  #4  
Old 15-10-19, 22:14
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Hanno Spoelstra Hanno Spoelstra is offline
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Default Waterman Special CMP Tool Co.

Thanks for all the tips and hints, guys. The tool I borrow was made up from an old screwdriver. Angles were not entirely right and I could not put enough leverage on it.

It does not help the cylinders may be seized. I will be soaking them again in WD40 and copy Phil's tool. I have a 10 mm wide cold chisel, some 25 cm long, which I reckon would fold up nicely along Phil's dimensions - if you could please post the dimensions, Phil?

If the brakes are rusted solid and I cannot back off the brakes, I guess I have no choice but to pull the hub + brake drum with force?

Hanno
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  #5  
Old 15-10-19, 23:35
rob love rob love is offline
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If you are unable to back off the adjusters, and even then are unable to free up the drum from the shoes (I take it you are saying the drum will not turn?) then what you could try is to unbolt the cylinder before pulling the drum. I am not up on the smaller brake systems, but if there are bottom anchors, or anchor pins, I would try and remove them at the back of the backing plate as well.

If the drum will turn, but just not back off, then use a bar or wooden handle (ie pick axe handle) on the wheel studs (protect the threads of course) and turn the drum while pulling the drum away from the hub. Again, whatever you can remove for the anchors may help remove the drum.
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  #6  
Old 16-10-19, 12:35
Owen Evans Owen Evans is offline
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Hanno,

If you do end up pulling the hubs, you need a kent-moore J870 wrench (attached - the one I have is missing the tommy bar) for the special locking nuts on the C15 rear axle. You can use a punch and hammer if you don't have that wrench, but be careful not to damage the nuts.

From my recent experience, the brake linings on my C15 were pretty much welded to the drum. To confirm what Rob suggests, I ended up 'working backwards' and unbolting the backplate from the axle, unbolting the wheel cylinder and disassembling that way.

Owen.
Attached Images
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File Type: jpg GM473636 rear axle nut.jpg (215.9 KB, 4 views)
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  #7  
Old 16-10-19, 18:54
Phil Waterman Phil Waterman is offline
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Default Special tool #27257

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


20191016_124227.jpg
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