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Farmall & IHC Tractors Discussion Forum
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300 utility brakes

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D Sellers

01-09-2005 17:50:20




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I am trying to get brakes working on 300u,have took apart and cleaned, shined and greased steel balls and ramps.This greatly improved brakes,however they ain't quite as good as they are supposed to be yet. Is there some sort of solvent or cleaner I can use on the disc, or is it time for a new set of disc? Also, what is the thickness of a new disc, so I will know how much mine are worn. Thanks DSellers

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Ibby

01-10-2005 02:53:27




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 Re: 300 utility brakes in reply to D Sellers, 01-09-2005 17:50:20  
A new set (4 disks) will run you around $40 on eBay (plus shipping). They May NOT solve the problem, though. In addition to the metal friction plates getting glazed, they wear enough to put the actuator mechanisim at the limit of their travel. The cure for that is to take the covers to a good machine shop, and have the rims cut down enough so they just clear with the brakes off. (Mine had to go down an 1/8". I used a 4" side grinder and coarse paper sanding disk to roughen up the friction surfaces in a nice swirling pattern. Your goal is to provide friction, not remove metal, so go easy. Do both sides of the actuators, too. Check and/or replace your brake return springs, too. Mine were weak, letting the pedals sag enough to slightlly engage the brakes at all times, Would have glazed them again, quick. They work like power brakes, now. When that pedal(s) go down, the tractor's stopping - no ifs, ands, buts or maybes.

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Aces

01-09-2005 19:36:44




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 Re: 300 utility brakes in reply to D Sellers, 01-09-2005 17:50:20  
D hang them outside on a post for awile they will work like new.



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ny bill

01-09-2005 18:18:16




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 Re: 300 utility brakes in reply to D Sellers, 01-09-2005 17:50:20  
a wood rasp will work to rough up the glazed surface on the brake discs.



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K.B.-826

01-09-2005 18:10:15




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 Re: 300 utility brakes in reply to D Sellers, 01-09-2005 17:50:20  
Do you have oil leking past the bull pinion shaft seals and into the brake housings? Those seals are known to leak. If so, thats the place to start. Any good auto parts store will have "Brake and Parts Cleaner" in spray cans. Make sure all of your brake parts are 100% free of oil and grease. Lubricate the steel balls with graphite. Don't know the thickness of a new disc, but for what they cost, replace them if you're doubting your old ones.

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PAULIH300

01-09-2005 18:04:51




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 Re: 300 utility brakes in reply to D Sellers, 01-09-2005 17:50:20  
The brake discs are pretty cheap,I would recommend replacing them.I need to on mine.Good right brake but zero left.Its amazing how little care some people give to things all the while they are working the devil out of it.
At this rate its going to take me years to get this one up to snuff..... .everytime I look at something else,I find a whole nother botch job.
Geez....



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CNKS

01-09-2005 17:55:39




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 Re: 300 utility brakes in reply to D Sellers, 01-09-2005 17:50:20  
I don't know the original thickness, they can be machined. I have done two sets with sandpaper, they work ok, don't know how long they will last.



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CNKS

01-09-2005 18:04:04




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 Re: 300 utility brakes in reply to CNKS, 01-09-2005 17:55:39  
I meant the metal surface can be machined, but I used sandpaper. Unless your disks are oil soaked or badly glazed an indication may be how much adjustment you have left. If any doubt I just replace them, but you will spend $80-$100 if I remember right.



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