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Mf12G Brake Band


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#1 cheluIS OFFLINE  

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Posted October 15, 2013 - 06:43 AM

Anybody knows the thickness of the brake band ?  I found 2 types : 30 x 4 mm (1.18 x 0.157 inch) and 30 x 3 mm (1.18 x 0.118 inch) . I want to replace the band at the brake shoe and I don't know what thickness to use  . I'm gonna to glue the band with Loctite 3430 - http://www.youtube.c...h?v=5r0PrZO83xM

 

WP_20131015_001.jpg



#2 MH81 ONLINE  

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Posted October 15, 2013 - 06:53 AM

My first reaction was the 3mm for foexibility. Then I did the math and 4mm is only 1/8". I would use the 4mm

#3 cheluIS OFFLINE  

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Posted October 15, 2013 - 07:05 AM

Both have almost the same flexibility , as you can see in the picture . My concern is that the brake drum diameter + brake band thickness  is bigger than the interior diameter of the brake shoe , if you see what I mean .



#4 Sawdust OFFLINE  

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Posted October 15, 2013 - 02:56 PM

I measured mine from a 1968 MF12 H & I'm around 3.6 - 3.9 so I would go with the 4 as well. According to mine I have a lot of room for adjustment to keep the band from being too tight on the brake drum. Hope this helps.


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#5 cheluIS OFFLINE  

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Posted October 26, 2013 - 12:03 PM

Finally I changed the brake band .

The brake band was worn-out unevenly .
WP_20131026_001.jpg

With a chisel remove the old brake band (or what's left of it) .

WP_20131026_003.jpg WP_20131026_004.jpg

Remove the remains with a mini drill or by hand with sandpaper .

WP_20131026_008.jpg

Don't forget the goggles and mask . The dust from the old band I'm pretty sure has asbestos , is very toxic .Sorry for the picture .Hope you don't have a nightmare

WP_20131026_007.jpg

Roughen the surface for bond strenght .Some lines with the tip of the chisel will do the work.

WP_20131026_011.jpg

Cut the necessary lenght of brake band .

WP_20131026_009.jpg

Put some masking tape over the brake drum to avoid bonding the band with the drum in case of adhesive leakage .

WP_20131026_010.jpg .

Prepare for operation . After mixing the 2 components you have aprox. 6 min. to put the brake band and the whole ensemble in place . Don't detach the brake rod . You need to put the whole ensemble in place to draw together the band and the shoe till glued .

WP_20131026_012.jpg

Put the brake back in position and put the varidrive lever in PARK .

WP_20131026_013.jpg

Leave for 24 hours for bonding .

 

Let's hope that will last . I'll keep you informed after few runs (hope the tractor will stop with it's brakes not in a fence or something :hitting_self_roller: )

 

Keep in touch .

 


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#6 Sawdust OFFLINE  

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Posted October 26, 2013 - 01:28 PM

Looks great...nice tutorial too.

#7 MH81 ONLINE  

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Posted October 26, 2013 - 02:11 PM

Thanks for the step by step. That's great. Looks like a nice, long lasting job.

#8 IamSherwood OFFLINE  

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Posted October 26, 2013 - 06:04 PM

Thanks for walking us through that.

Handy info to have around.

Do you use any solvent to clean the metal, before

applying the adhesive?



#9 HowardsMF155 OFFLINE  

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Posted October 26, 2013 - 07:27 PM

With the way the variable clutch works, just slowly depressing the clutch will slow the tractor down quite a bit, even if your brakes aren't working quite right.



#10 cheluIS OFFLINE  

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Posted October 27, 2013 - 02:45 PM

@IamSherwood . After sanding I cleaned with thinner to remove the dust and grease.

 

After 24+ hours I removed the brake band . It looks OK. It seems that is well glued .

I think I put a little to much adhesive .

WP_20131027_005.jpg WP_20131027_006.jpg

 


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#11 ckjakline OFFLINE  

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Posted November 11, 2013 - 07:05 PM

Anybody knows the thickness of the brake band ?  I found 2 types : 30 x 4 mm (1.18 x 0.157 inch) and 30 x 3 mm (1.18 x 0.118 inch) . I want to replace the band at the brake shoe and I don't know what thickness to use  . I'm gonna to glue the band with Loctite 3430 - http://www.youtube.c...h?v=5r0PrZO83xM

 

attachicon.gifWP_20131015_001.jpg

Where did you find the band material at.I think it would be nice to have it around for repairs.


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#12 cheluIS OFFLINE  

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Posted November 12, 2013 - 07:01 AM

@ckjakline . I don't think that my supplier of the brake band can help you . As you can see in my profile I'm from Romania and the shipping to you can cost much more then the value of the band . You can try here :http://www.fermit.ro...xible_tapes.php


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#13 ckjakline OFFLINE  

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Posted November 12, 2013 - 05:47 PM

Oh I see that now.I missed that earlier.I'll have to look into finding some. Thanks


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