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Ford 9N, 2N & 8N Discussion Forum

Intake Valve Problem

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Paul (MA)

01-28-2004 14:50:10

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For the second time this month, one of the intake valves on my 52 8N has slipped through the keeper wedges at the bottom of the valve. The first time it happened I replaced the wedges. This obviously was not the solution. This time I figure I will replace the valve and the keepers.

Is there anything else I should replace while I'm at it? I don't know much about engines, is there anything I need to do to the valve seat to accept a new valve?

Any help on this subject would be great.

Thank you.

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01-29-2004 06:03:19

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 Re: Intake Valve Problem in reply to Paul (MA), 01-28-2004 14:50:10  
The valves have almost no relationship to oil consumption in the N engine because of the design.

I think you should look carefully at the valve spring tension as the problem of the keepers coming out. It is almost impossible for the keeper to come out if the spring has enough tension on the retainer etc.

Look at the bottom of the valve too when the keeper is installed on the valve to be sure that the retainer is not sitting too low on the valve. It is possible that the spring retainer is worn enough to allow the keeper to pass through it and become dislodged but I don't think the keepers can come off from the bottom if the spring tension is good.


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01-29-2004 04:21:36

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 Re: Intake Valve Problem in reply to Paul (MA), 01-28-2004 14:50:10  
Replace guide, valve, keepers, retainer and spring. For this to happen somtin wore slap out. If all is in good workin order this could not happen.

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Mark P

01-28-2004 17:52:03

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 Re: Intake Valve Problem in reply to Paul (MA), 01-28-2004 14:50:10  
Paul, you're gonna have to lap the new valve into the seat. To do this you will need lapping compound and a lapping tool (suction cup on a dowel) HTH
By the way, where in MA are ya? I'm in Uxbridge.

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Paul (MA)

01-31-2004 04:50:30

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 Re: Re: Intake Valve Problem in reply to Mark P, 01-28-2004 17:52:03  

Thanks for the help.

I'm from North Andover. It's about 40 min. north of Boston, near Lawrence. It's a nice town but being over-built. I'm lucky to have a couple of acres to fool around on.

I love my N. I bought it about 2 years ago. I knew nothing about tractors. Thank god for this board. I use my N with a 5' brushhog, moldboard plow, disc harrow and dearborn front snow plow.
I hope to purchase more impements in the future but for the time being I've decided to stay married (my wife is very jelious of the ole girl.

Thanks again for the help. I'm ordering new parts today so I hope to be back up and running soon.

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John IA

01-28-2004 17:49:33

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 Re: Intake Valve Problem in reply to Paul (MA), 01-28-2004 14:50:10  
Paul, make sure there are no gouges or pits in the valve seat, As this can come back to haunt you. If your tractor is using any oil at all, you might as well grind and face all the valves. If your weak on compression you might consider putting rings and bearings in it while you have the head off. If not, Just make sure you have a good seat and adjust the valves properly when your done. John

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