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brian stanek Regular
Joined: 06 Nov 2007 Posts: 337
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Posted: Tue Jan 08, 2019 4:14 pm Post subject: tea 20 |
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need to replace broken valve spring. can I put a rope in cyl and slowly move pistn up to hold valve up while I make up a gadget to remove the keeper? thanks for any info |
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Steve@Advance Tractor Guru
Joined: 12 Nov 2013 Posts: 12442
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Posted: Tue Jan 08, 2019 7:17 pm Post subject: Re: tea 20 |
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I've heard of that method, never tried it.
I have used air pressure, remove the pushrods on that cylinder, put an adapter in the spark plug hole, air pressure will hold the valves up. |
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ghostdncr Regular
Joined: 02 Dec 2018 Posts: 115
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Posted: Wed Jan 09, 2019 12:31 am Post subject: Re: tea 20 |
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I think the rope trick will work on any overhead valve engine. Only exception I can think of may be some types of overhead cam motorcycle engines where it really is easier to pull the heads for valve keeper replacement. |
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Charles in Aus. Tractor Expert
Joined: 16 May 2011 Posts: 2140 Location: Victoria , Australia
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Posted: Wed Jan 09, 2019 4:42 pm Post subject: Re: tea 20 |
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Yes you can , it works very well and is easy to do .
Use soft sash cord , make sure it is clean and feed it in while the piston is at its lowest . Use the hand crank to raise the piston hard up against the rope and tie it or block it into position . Ensure you leave a long tail hanging out of the plug hole by the way
A piece of flar bar or angle can be fitted across the rocker cover hold down studs to give you a place to lever from or mount whatever you need to remove the collets . The collets will spring away and hide from you , laughing all the time so cover them with a cloth and block any other areas where they will flee to .
This is what I used .
I bent a crappy mower spanner into shape , welded it to the angle , then compressed the spring by tightening the rocker cover nuts . |
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brian stanek Regular
Joined: 06 Nov 2007 Posts: 337
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Posted: Wed Jan 09, 2019 5:45 pm Post subject: Re: tea 20 |
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so I wasn't able toget much pressure on the valve for some reason or another however I made up a good gadget to be able to remove the keepers so will see how assembly goes when valve shows up/ tried air pressure with a cigarette liter compressor and I could nor keep enough pressure to hold valve so hope a valve is not burnt? |
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Ark68SS Regular
Joined: 02 Feb 2013 Posts: 420 Location: Arkansas
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Posted: Wed Jan 09, 2019 7:50 pm Post subject: Re: tea 20 |
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That little compressor doesn't supply enough air. Use the rope trick and you'll be good.
BillL |
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