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Massey Harris & Massey Ferguson Tractors Discussion Forum
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Re: MF50 adjusting brakes

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Masseynut(Australia)

05-31-2020 04:00:55




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To correctly adjust the expanding shoe type brakes, the pull rods need to be released from the brake pedal (RHS) and the thru shaft (LHS). Pull the clevis pins on both sides and go back and adjust the brakes thru the backing plate. Once the drum locks, reconnect the pull rods and stab the brake pedals several times. Now remove the clevis pins once again and adjust the brake up once more. Now adjust the turnbuckle clevis on the pull rod so that the pin can be slid into the clevis while the pedal is at it's highest position, without having to "pull" on the rod to fit it. Once this has been achieved, go back and "back off" the adjuster until the drum or wheel turns relatively freely. Any re-adjustment from this point is only to be done via the adjusting wheel, and not on the pull rod clevis, hope this helps, Evan.

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DavidP,South Wales

05-31-2020 09:06:28




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 Re: MF50 adjusting brakes in reply to Masseynut(Australia), 05-31-2020 04:00:55  
Hi, the brakes should be adjusted as Evan has said. If you find them to be lacking braking efficiency when done check the position of the brake drop arms. These are the arms on the inner ends of the brake shafts. For maximum efficiency they should be no further forward than perpendicular to the axis of the tractor. If they are, it is very likely that the cams on the outer ends of the shafts will be worn at the point where the shoes make contact with them. The cams can be ground back a little and built up with weld and then further ground to size. In the drop arms going too far you are losing leverage on the shoes.
DavidP, South Wales

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Dieseltech

06-01-2020 04:06:17




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 Re: MF50 adjusting brakes in reply to DavidP,South Wales, 05-31-2020 09:06:28  
If brakes need repair on both sides, I swap the brake shafts instead, shoes then work like new on the unworn area of the shafts. No welding needed that way.



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DavidP,South Wales

06-01-2020 05:24:01




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 Re: MF50 adjusting brakes in reply to Dieseltech, 06-01-2020 04:06:17  
Interesting thought....backplate as well?
DavidP



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Dieseltech

06-01-2020 08:16:34




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 Re: MF50 adjusting brakes in reply to DavidP,South Wales, 06-01-2020 05:24:01  
Yes, I did back plates and shafts together when the brakes were apart on my Standard diesel TO-35, brakes work like new now.



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