I pulled the brake drum

M274 Mechanical Mule Wanted, For Sale (NO AUCTION or EBAY), and Knowledge Base
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Frankie
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I pulled the brake drum

Post by Frankie » Sun Apr 23, 2006 12:55 pm

Brakes were not working at all so I pulled the brake drum. All interior parts were heavily soaked in oil, so I imagine the yoke seals are worn. Are these difficult to replace? Also, can anyone tell me which parts will be needed? Will I be able to clean the brake shoes or must they be replaced? TIA, Frank

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Emmett Thompson
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Post by Emmett Thompson » Mon Apr 24, 2006 4:09 am

Frankie,
Not too hard to replace. Changing the shifter rod seals require a special tool (had one made and works fine). You can get a cheap seal puller from NAPA. I suggest replacing the shoes as once the shoes are saturated in oil, it is darn near impossible to get them completley clean. someone else might have a better idea on how to clean up old brake shoes.
ET
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Chuck W.
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Post by Chuck W. » Sat Apr 29, 2006 7:46 pm

You can get a new set of shoes for about $20, so I agree with Emmette, it's not worth the trouble to try to clean them, and even if you use brake cleaner, the linings may crack all to pieces when they dry out. Be safe, get new shoes.
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Rod
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Post by Rod » Sat Apr 29, 2006 8:40 pm

Emmett Thompson wrote:.......Changing the shifter rod seals require a special tool (had one made and works fine)......
Emmett, don't leave us hanging, tell us about the special tool or better yet show us pictures.
I want to live life, til the day I die.

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Emmett Thompson
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Post by Emmett Thompson » Sun Apr 30, 2006 4:54 am

Hello Rod,
I don't know how to put a photo on the site but will be happy to send you one via email. If you can guide me through the process of posting a photo, I will be happy to do so.
Just got Mule 2 back yesterday and had a blast driving around people at a party my brother had.
Going on tuesday to pick up mule 3.
ET
Pay+Perdiem=Pride
EX C-141 FE CAFB SC
Hiller OH-23
M-151 A2, M-274, M-274 A5,
M-38, M-561, M109A3,
M-416, and lots of parts!


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Rod
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Post by Rod » Sun Apr 30, 2006 6:15 am

ET,

Send me the picyure and I post it. Thanks
I want to live life, til the day I die.

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Emmett Thompson
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Post by Emmett Thompson » Sun Apr 30, 2006 7:31 am

Rod,
Photo is on the way...
The tool to the left is used to insert the seals.
The 2 peice removal tools are on the right.

The threaded tool with the nut is hollow and goes over the shifter rods and screwing into the seals. Then the piece on the right goes over the threaded piece and the nut is screwed down thereby pulling the seals out.

I have used it a few times and it works great. You would be hard pressed to remove the 2 seals in each shaft without this neat tool.

The tool can be seen in the manulas like TM 9-2320-246-34 page 2-2. This is what we started with and then did some measuring to have a machine shop make it. Took a few times to get it right.

ET (mule skinner)
Pay+Perdiem=Pride
EX C-141 FE CAFB SC
Hiller OH-23
M-151 A2, M-274, M-274 A5,
M-38, M-561, M109A3,
M-416, and lots of parts!

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Rod
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Post by Rod » Sun Apr 30, 2006 11:42 am

Here is Emmette's Tool

Image
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Chuck W.
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Post by Chuck W. » Mon May 01, 2006 7:10 am

Very nice job on the transmission shaft seal tooling. Works similar to the seal remover for the D18 transfer case shift-shaft seals:
Image
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Emmett Thompson
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Post by Emmett Thompson » Mon May 01, 2006 9:56 am

Very interesting.
I have had 3 people ask where they can get one so I will measure it out so that if someone wants, they can have a machinest make them one.

Mine is made out of common low carbon steel as opposed to machine steel. It works fine for my purposes but would wear out is used too many times. If it is made out of low carbon steel the price to make it is MUCH less than a machine steel unit. I figure I cant possibly have to use it enough times to wear it out but If I let people borrow it I would have to get another one made.

Measurements to follow later today.
ET
Pay+Perdiem=Pride
EX C-141 FE CAFB SC
Hiller OH-23
M-151 A2, M-274, M-274 A5,
M-38, M-561, M109A3,
M-416, and lots of parts!

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