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Garden Tractors Discussion Forum

Lawn Tractor Brakes

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Larry Hardesty

07-19-2012 06:59:10
74.38.150.71



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I purchased recently a replica of a 1903 (or thereabouts) Oldsmobile Curved Dash Runabout. Previous owner said transmission was from "an old lawn tractor."

Well, the brakes do not work. There is a small disc connected to the trasmission. When the brake lever is pushed a pad goes up against the disc. The pad is worn and does not connect up to the disc. Looks like the pad is either welded in, soldered in (would think heat would affect it) or JB welded in.

I cannot find any numbers on the transmission to give an idea of manufacturer or model, but it is two speed forward and one reverse (so I would think either an early or very small lawn tractor). The lever (with spring) connecting to the brake apparatus looks John Deere green, which may or may not mean anything.

Any ideas on how to make the brakes work? The pad is maybe an inch wide and inch and quarter long and curved on the top side. Are they meant to be replaceable? If so, any ideas where to get them?

Got the little Olds for chuckles and grins and for my wife to drive to the mail box (3/8 mile away on gravel road with couple of pretty good hills). With the hills it is a bit of a thrill to go down them without brakes. Engine is 6.5 horsepower Briggs and Stratton and will hold it back a bit but not much.

Thanks in advance.

Larry Hardesty

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rustyj14

07-20-2012 18:28:37
71.182.206.250



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 Re: Lawn Tractor Brakes in reply to Larry Hardesty, 07-19-2012 06:59:10  
Take the brake assembly apart (remember how it goes back together. Clean the two plastic pins, lube the metal casting, buy a new brake pad, and reassemble it. Oil it greatly, and make sure when you push the brake pedal that the lever on the brake assembly moves forward and back. that lever has two bent areas that push the little round pins in and in turn, they push the brake pad in to make contact with the brake disc! Most any lawn tractor repair place will have brake parts. Note: There might be a small steel plate inside the assembly, that goes in on top of the brake pad/ block. the brake operating rod should have an adjustment on it, too. Don't worry about getting oil on the brake pad, or anything else. It will keep it operating well. Been fixing lawn tractors for about 20 years. RJ

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Larry Hardesty

07-20-2012 20:48:01
74.38.150.71



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 Re: Lawn Tractor Brakes in reply to rustyj14, 07-20-2012 18:28:37  
"Take the brake assembly apart (remember how it goes back together. Clean the two plastic pins, lube the metal casting, buy a new brake pad, and reassemble it. Oil it greatly, and make sure when you push the brake pedal that the lever on the brake assembly moves forward and back. that lever has two bent areas that push the little round pins in and in turn, they push the brake pad in to make contact with the brake disc! Most any lawn tractor repair place will have brake parts. Note: There might be a small steel plate inside the assembly, that goes in on top of the brake pad/ block. the brake operating rod should have an adjustment on it, too.
Don't worry about getting oil on the brake pad, or anything else. It will keep it operating well. Been fixing lawn tractors for about 20 years."

Rusty, no plastic parts and cannot find someone who has the brake puck. I put it back together and adjusted it. Works but probably I need to install a go cart brake. Thanks Larry

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rustyj14

07-28-2012 08:35:08
71.182.206.250



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 Re: Lawn Tractor Brakes in reply to Larry Hardesty, 07-20-2012 20:48:01  
Any lawn mower repair place should have those two little "Plastic" pins, which i said are the only plastic parts in the brake assembly! I did NOT say that there were any other plastic parts in the brake assembly! I don't know what the brake pad (puck) is made of! But, it is NOT plastic! Rusty J.
P.S.: Maybe you should enrich the knowlege of the rest of us, by having the little pins examined by some place that does those things, report back to us, and then we can be literally correct in our descriptions of items! Rusty Jones, The Mower Man

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mstas

07-20-2012 17:41:47
204.145.101.45



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 Re: Lawn Tractor Brakes in reply to Larry Hardesty, 07-19-2012 06:59:10  
That trans looks a lot like the 1 one an old montgomery wards rear engine rider that we had in the early 70s. 2 Foreward 1 reverse i think in a straight line. probably doesnt help much.



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Larry Hardesty

07-20-2012 20:49:41
74.38.150.71



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 Re: Lawn Tractor Brakes in reply to mstas, 07-20-2012 17:41:47  
"That trans looks a lot like the 1 one an old montgomery wards rear engine rider that we had in the early 70s. 2 Foreward 1 reverse i think in a straight line. probably doesnt help much."

It could be. The shifter does work in a straight line. Thanks

Larry



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steve_in_mo

07-20-2012 07:48:49
168.166.54.11



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 Re: Lawn Tractor Brakes in reply to Larry Hardesty, 07-19-2012 06:59:10  
A couple of other posters have noted the really bad design on that brake. You are on the right track if you replace it with a go-kart style brake on the axle the wheels are attached to.

You should be able to get one that bolts on your vehicle, and you can up a motorcycle or go-cart cable to actuate it.



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Larry Hardesty

07-19-2012 13:46:46
74.38.150.71



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 Re: Lawn Tractor Brakes in reply to Larry Hardesty, 07-19-2012 06:59:10  

I have tried to attach the photos of the transaxle brake and its parts.

Larry Hardesty



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Larry Hardesty

07-19-2012 13:52:06
74.38.150.71



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 Re: Lawn Tractor Brakes in reply to Larry Hardesty, 07-19-2012 13:46:46  

Well, I think the brake parts are attached this time.

Larry Hardesty



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rrobert

07-20-2012 05:54:33
71.227.6.189



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 old stuff in reply to Larry Hardesty, 07-19-2012 13:52:06  
I have never seen brakes like that. The pads look ok. 1/4" thick should be a good thickness. I would check the cam that squeezes the brake pads together. It might be worn. Does the lever go forward further or is it stopped by the plywood? The plate with two 1/4" bolts doesn't look original to me but I could be wrong.

There are a few posters that will know what that is. If they don't respond in a few days, you might consider top posting so they see the pics.

Good luck with it.

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Larry Hardesty

07-20-2012 11:28:00
74.38.150.71



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 Re: old stuff in reply to rrobert, 07-20-2012 05:54:33  
Robert, I went to a local lawn and garden shop today. The owner recognized the priniciple behind the brake but said it was not exactly like he had seen before.

I will change it to some type of go cart brake to be safe.

Thanks

Larry



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Larry Hardesty

07-19-2012 13:49:21
74.38.150.71



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 Re: Lawn Tractor Brakes in reply to Larry Hardesty, 07-19-2012 13:46:46  
Well, one picture got attached. I will try another with the parts off the transaxle.



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Diydave

07-19-2012 09:47:15
96.244.164.17



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 Re: Lawn Tractor Brakes in reply to Larry Hardesty, 07-19-2012 06:59:10  
In addition to what others have said, crosley motors may have made the tranny. I know that a crosley tranny is on a planet junior 2 wheel tractor.



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rrobert

07-19-2012 07:16:07
71.227.6.189



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 Do you have pictures? in reply to Larry Hardesty, 07-19-2012 06:59:10  
Of the brake pad. You might be able to retrofit go kart brakes on it.
Is it a flat disc? Or a wide drum?
Flat discs use a domino shaped brake pad on both sides of the disc. Very common and any small engine shop could find one if you show the what you need.

A drum is a different animal. JD used a band which is also used on gokarts. You could try and make a pad from an old car tire. You just don't want metal grinding metal.

Yours sounds like a 90 degree arc touching a drum. Not sure without pictures.

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Larry Hardesty

07-19-2012 14:55:08
74.38.150.71



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 Re: Do you have pictures? in reply to rrobert, 07-19-2012 07:16:07  
I have posted some pictures.

Larry



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Larry Hardesty

07-19-2012 07:22:59
74.38.150.71



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 Re: Do you have pictures? in reply to rrobert, 07-19-2012 07:16:07  
They are disc brakes...not expandable drum brakes. The pad is worn and does not fully connect to the disc. The disc is only about 3-4" in diameter. Kind of wonder how well they worked when new?

Sorry, no pictures.

I will try local shops for ideas. Might have to go to a go cart brake.

Thanks

bookman



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rrobert

07-19-2012 08:01:56
71.227.6.189



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 ok, if what I think in reply to Larry Hardesty, 07-19-2012 07:22:59  
The pads should be about 1/4" thick.
There is pad on the transmisison side, then the disc, then another pad, a thin piece of sheet metal, and then 1/4" two pins inside the outer cover. A lever connects to the center of the outer cover. When you move the lever, it pushes on the pins and forces the pads together. The pins are known to rust in the aluminum cover. the cover is held on with two 3/8" bolts. Remove cover and loosen pins up. The center nut that holds the lever can be tightened to put more pressure on the pads.

To avoid breaking the 3/8" bolts, you might be able to remove the center nut and lever in order to free up the two pins.

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Larry Hardesty

07-19-2012 08:43:11
74.38.150.71



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 Re: ok, if what I think in reply to rrobert, 07-19-2012 08:01:56  
Robert, kind of the right principle but not exactly what I have. I think I will take it off and go to a local lawn and garden tractor shop. I suspect I will end up replacing it with a go-cart style brake. If the chain ever breaks or comes off the sprocket while going down hill, it could be quite a ride!!!

Thanks

Larry



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bdunegan

07-19-2012 07:14:29
206.231.103.236



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 brake pad in reply to Larry Hardesty, 07-19-2012 06:59:10  
The pad may or may not be worn out. the actuating rod, when turned, is offset and pushes against one or two small pins which push the pad against the disc thus applying brakes. the pins over time will stick due to rust or dirt and debris. the whole brake assembly is easily removed. remove it, and check pins to make sure they are free. pad should not be welded or glued in at all. it should have a metal spacer behind it that the pins push against. pad should come right out and it can be purchased at any mower parts dealer.

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Larry Hardesty

07-19-2012 07:24:38
74.38.150.71



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 Re: brake pad in reply to bdunegan, 07-19-2012 07:14:29  
I will take it off and take it to a local lawn and garden shop. Thanks much.

Bookman



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ken combs

07-19-2012 12:35:10
70.128.127.215



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 Re: brake pad in reply to Larry Hardesty, 07-19-2012 07:24:38  
Lining material is available from mcmastercarr.com. You can select the thickness you need, shape to fit and apply using the adhesive of your choice. I like 5 min epoxy, others use contact cement.



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rustyj14

07-20-2012 18:34:33
71.182.206.250



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 Re: brake pad in reply to ken combs, 07-19-2012 12:35:10  
Warning: If that brake has the rectangular fiber brake pad, and two little pins, DO NOT GLUE IT TOGETHER!! It will not work! RJ. SHEESH!



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Larry Hardesty

07-20-2012 20:52:06
74.38.150.71



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 Re: brake pad in reply to rustyj14, 07-20-2012 18:34:33  
"Warning: If that brake has the rectangular fiber brake pad, and two little pins, DO NOT GLUE IT TOGETHER!! It will not work! RJ. SHEESH!"

RJ, Nope, nothing like that. Just two metal brake pucks (one on each side of the about 2.75 inch diameter disc.

Larry



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