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Harry Ferguson Tractors Discussion Forum
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TO-20 Brake adjustment

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jarrott whyte

10-10-2006 14:44:06




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There is supposed to be a hole to adjust the brakes on my tractor. Does anyone know exactly where this hole is? Also what size wrench do I need or is it a blade of a screwdriver? I've been told it's pretty simple to adjust and that adjustment is the most common problem rather than the brakes being worn. I look forward to your responses.




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John (UK)

10-13-2006 10:52:33




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 Re: TO-20 Brake adjustment in reply to jarrott whyte, 10-10-2006 14:44:06  
There is a slot on the brake back plate towards the rear edge, insert a screwdriver in here and push it in, move the handle of the screw driver towards the axle to tighten. The TO20's have 11" Bendix brakes and the TE20 have 14" Girling brakes that are adjusted by turning a big square nut clockwise, after slackening the hexagon nut below it first,if you don't slacken it first it will break off the centraliser. Use about 1/2" blade screwdriver on TO20 and 11/16"a/f wrench on TE20. The oil around there is the oil seal on the axle-shaft leaking as Gerard says. You should tighten the brake adjustment completely, then slacken off 6 clicks and then try to see if they are balanced and pull up in a straight line.

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Keith Pemberton

10-10-2006 17:20:45




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 Re: TO-20 Brake adjustment in reply to jarrott whyte, 10-10-2006 14:44:06  
on my 49 to20 the brake adjustment is done through a slot in the back of the backingplate,toward the rear of the tractor. Useing a flattip screwdriver or a brake adjusting tool. Be sure not tighten to much,as the brake will sometimes lock up.



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jarrott whyte

10-10-2006 17:34:56




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 Re: TO-20 Brake adjustment in reply to Keith Pemberton, 10-10-2006 17:20:45  
According to my last question...about wiring...I was told that it sounded like I had a 49 to20 rather than a 59to30 which I thought it was (this is according to the serial #). Is it similar to the drum adjustment you would do on a car with drum brakes? You know with that little clicker thing??? ("little clicker thing"...pretty stupid sounding huh?)



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DennisPinOhio

10-10-2006 15:22:17




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 Re: TO-20 Brake adjustment in reply to jarrott whyte, 10-10-2006 14:44:06  
My TE 20, which should be the same as your TO 20, has a big square bolt head on the backing plate that you rotate to adjust the brakes.



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gerard

10-11-2006 15:00:20




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 Re: TO-20 Brake adjustment in reply to DennisPinOhio, 10-10-2006 15:22:17  
TE"s and TO"s had different brakes. The TE had 11" and the TO 9". One was bendix, the other Girling - can"t remember which way round. Sure, the TE has a square you put on OE spanner on. Could be the TO has that stupid ratchet tpye hiding behind a slot - the sort the army loved for their trucks.



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jarrott whyte

10-10-2006 17:12:16




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 Re: TO-20 Brake adjustment in reply to DennisPinOhio, 10-10-2006 15:22:17  
Okay, I looked earlier before I got your reply and my wheels are inverted so it's kind of tight. It looks like I might have to take the wheel off to get to it...which since I have a lot of hills I've considered swapping tires side to side to have a wider foot print. Is removing the tire neccessary? And does it get tighter clockwise or counter? If you don't remember I'm sure I can figure it out. Also, there is a lot of dampness arround the backing plate...are there brake cylinders behind there or anything that might leak? I figure there are axle seals...you ever done those? And what is involved in that?? Thanks for your help!

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gerard

10-11-2006 15:14:29




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 Re: TO-20 Brake adjustment in reply to jarrott whyte, 10-10-2006 17:12:16  
Wow - there's a few queries wrapped in one paragraph! 1. if you swap wheels inside for out, tread pattern will be backwards. Doesn't really matter unless you're in loose ground. Actually, on sand, it's an advantage. Just remove rim from centre, turn centre inside out & refit rim - keeps tire same way. You don't need to swap side for side. 2. don't understand 'inverted' or clockwise or counter. Just turn adjusters until wheel won't turn, then back off until it's just free.
3. Brakes are mechanical, so there's no cylinders to leak brake fluid.
4. axle seals - a pest to replace the OE ones. Some use Sure Seals, which fit over the axle without having to remove the bearing and its retaining collar. You have to pull the backplate off complete with axle shaft to do this. This might get complicated if you need to adjust bearing preload if slack in bearings is causing the axle to move radially and thereby give the oil seals a hard time. Come back if you need advice on setting axle bearing clearance, as the half shafts push against each other to maintain correct axle bearing fit.

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jarrott whyte

10-12-2006 15:35:30




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 Re: TO-20 Brake adjustment in reply to gerard, 10-11-2006 15:14:29  
Thanks again!! Can you tell I'm new to tractors? haha



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