M500 Brake Drum Removal

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Travco Model: 1976 270

Re: M500 Brake Drum Removal

Unread post by RobC » Thu Oct 30, 2014 12:28 pm

My 76 had star when adjusters but everything was seized up after a couple years sitting. My brake guy had to seriously beat the **** of shoe flange to get them off inch by inch. My rig says 128,000 miles and he said the drums were well within tolerances. Shop manual probably has the tolerances in it. I will look tonight.\n\nRobC

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Re: M500 Brake Drum Removal

Unread post by Acesneights » Thu Oct 30, 2014 9:24 pm

What's most important is if the drum has become tapered. Run a drum mic on it. As long as it's not tapered or out of round o chewed up bad, it's probably fine.
1977 Travco 270 Elite\n1974 Travco 220 Parts unit

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Re: M500 Brake Drum Removal

Unread post by Dave78Chieftain » Sat Mar 07, 2015 1:55 pm

In response to this thread, I updated my Bendix Twinplex Brake Systems web page to reflect the location of the Brake adjustment Wheels.\nhttp://dave78chieftain.com/TwinplexBrakes.html\n\nRefer to Figures 2 and 2a. I hope no one will be offended by my using a picture from here for that update. :D \n\nPlease note that most every picture on my web brake pages is clickable to bring up a larger size picture in a new window.\n\nDave

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Re: M500 Brake Drum Removal

Unread post by 77Travco » Mon Mar 09, 2015 9:33 am

Thanks for the info Dave!

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Re: M500 Brake Drum Removal

Unread post by H2Lou » Mon Mar 09, 2015 7:03 pm

awesome. 8-)

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Re: M500 Brake Drum Removal

Unread post by Acesneights » Mon Mar 09, 2015 8:16 pm

Dave78Chieftain wrote:In response to this thread, I updated my Bendix Twinplex Brake Systems web page to reflect the location of the Brake adjustment Wheels.\nhttp://dave78chieftain.com/TwinplexBrakes.html\n\nRefer to Figures 2 and 2a. I hope no one will be offended by my using a picture from here for that update. :D \n\nPlease note that most every picture on my web brake pages is clickable to bring up a larger size picture in a new window.\n\nDave
\nNo offense at all. We are part of a community to help each other and any useful info is welcome.\nThanks.
1977 Travco 270 Elite\n1974 Travco 220 Parts unit

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Re: M500 Brake Drum Removal

Unread post by Dodgy71 » Tue Feb 23, 2016 1:00 pm

Can any of you verify that the rear axle bearing nut(s) are 2 7/8" OCTAGON nut? As best as I can measure it with my calipers, while still on the spindle inside the hub, it appears to be very slightly larger (2.885") while 2 7/8" = 2.875". Since OTC makes a 2-7/8" Octagonal socket (OTC-1933) I'm guessing that 2 7/8" is correct, but would like to get a confirmation of the nut size before ordering the socket. BTW, the next size OTC socket is 3" which sounds too big.

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Re: M500 Brake Drum Removal

Unread post by Acesneights » Tue Feb 23, 2016 6:13 pm

I have both 2 7/8 and a 3inch. Not much help am I. I can' remember but I think it was the 2 7/8. I think I bought the 3 by mistake but lately can' remember things well.
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Re: M500 Brake Drum Removal

Unread post by 77Travco » Thu Feb 25, 2016 9:15 am

I didn't have a socket when I did mine... used the hammer and punch method. (yea, yea, I know :D )

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Re: M500 Brake Drum Removal

Unread post by Dodgy71 » Thu Feb 25, 2016 8:52 pm

OK for my late 71 M375 chassis with Spicer 70 axle, the nut size is 2-7/8" and is an octagon. OTC brand socket is 1933.\nJust pulled my rear hub/drum :D \n As an aside, I note that the grease seal seems to have some sort of shroud that appears to be attached to the drum/hub. Never seen this before :? It would seem to complicate the seal installation. Any of you seen something like this and how did you install the seal?

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