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Re: M500 Brake Drum Removal

Unread postby H2Lou on Sat Oct 25, 2014 10:49 am

:? hhmmmmm...my 270 Travco is a 71, there does not seem to be a hole in the back plate like that.
and i expected a wheel like that when i took the grommet out...hhhmmm.
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Re: M500 Brake Drum Removal

Unread postby badbillybiker on Sat Oct 25, 2014 4:42 pm

I will look for a pic of a 1971 brake backing plate or of the brake installation. The only holes visible in my 1976 are for the dual wheel cylinders as shown. I am presuming the "No-Star" backing plate brake adjustment is done thru the "rocking" in reverse where the cam action walks the brake shoes to a point of automatic adjusting as if the cam action were walking a "star" wheel about, making the adjustment... In my mind that is how the no-star braking adjustment is being made. Not a mechanic but this is just my presumption based on rear brake adjustments automaticaally working. else the necessity for manually removing the drum and manually adjusting the shoes and replacing the drum, repeating until satisified with the adjustment. And I dont believe this is a requirement Out of ideas at this end unless shown a clear picture of the star adjusters and their locations... Just my $.02 worth.
Hope I am helping out here, and not confusing the current issue .
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Re: M500 Brake Drum Removal

Unread postby badbillybiker on Sat Oct 25, 2014 5:29 pm

Just got done doing a quick search. Statement is that your brakes have "automatic"adjusters.
Here is the short NFO... HTH
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Re: M500 Brake Drum Removal

Unread postby Roadrash on Sat Oct 25, 2014 7:11 pm

I don't know what system you have there. It's interesting. It looks like the rubber plug is in the backing plate. The ones with star wheels are also self adjusting. The star wheels, in the ones that have them, are part of the self adjusting mechanism.
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Re: M500 Brake Drum Removal

Unread postby H2Lou on Sat Oct 25, 2014 9:18 pm

thanks guys...it really puzzled me, all the old 70's stuff i have worked on in the past had the star wheels.
I'm able to rotate the drum now and i will try to get it off when it stops raining for a few hours. 8-)
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Re: M500 Brake Drum Removal

Unread postby Roadrash on Sat Oct 25, 2014 9:40 pm

Raining in Campbell River? That's surprising. Just like North Van it never rains here either. I'm glad to hear you've made some progress. Did you have the star wheel?
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Re: M500 Brake Drum Removal

Unread postby H2Lou on Sat Oct 25, 2014 9:48 pm

no...the small slot shows very little with a mirror and light... i see a metal rib of some sort but it won't move no matter what i do.
I will take a picture of it tomorrow...if it stops raining long enough.
we moved here 2.5 years ago and it has been amazing weather...the last 3 weeks have been steady rain :roll: :lol:
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Re: M500 Brake Drum Removal

Unread postby H2Lou on Sun Oct 26, 2014 5:55 pm

success.
well...that's a lot of rust.
adjusters seized solid.
I resorted to a big puller and finally was able to get it off.
they had disconnected the rear brakes years ago ... well, that was an understatement. :twisted:
now at least every neighbor for blocks won't come running out of the house due to the super loud squealing whenever i back this guy up. 8-)
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Re: M500 Brake Drum Removal

Unread postby 77Travco on Sun Oct 26, 2014 6:29 pm

Glad to hear that!
The shoes look pretty decent... Hopefully just rebuilding the wheel cylinders, cleaning everything up and some bleeding will take care of it.
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Re: M500 Brake Drum Removal

Unread postby H2Lou on Sun Oct 26, 2014 7:50 pm

yes, they do look good...going to turn my drums at work.
anyone have the maximum tolerance for them?
I'm going to replace the bearings and all the brake lines fittings and hardware while I'm in there.
8-)
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