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Harry Ferguson Tractors Discussion Forum
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To20 checking timing with timeing light?

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Gene in La.

05-24-2006 22:34:25




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I would like to now if the timing on a TO20 can be checked with a timing light and were do you look for marks; on pully or flywheel; to set it by? TDC is setting, I think I read somewere! Thanks for all help from this forum! Gene in LA.




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dfitch

05-25-2006 04:31:44




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 Re: To20 checking timing with timeing light? in reply to Gene in La., 05-24-2006 22:34:25  
The timing marks are stamped on the flywheel and
are visible through a 1 inch hole located slightly below where the starter mounts. The hole should have a plug in it that you remove with a screwdriver. To be able to see mine I had to remove the inspection cover behind the oil pan locate the marks and paint a thin white strip on the 7 degree BTDC mark. To be able to shin the light into the hole and see the mark I have to go to the front of the tractor with my head pretty close to the fan area ( not the most comfortable feeling) The timing is set with the engine running at 400 RPMs or less. Ater setting the timing it should advance to 30 to 34 degrees
BTDC when you go to max RPMs

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Jerry/MT

05-25-2006 16:42:27




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 Re: To20 checking timing with timeing light? in reply to dfitch, 05-25-2006 04:31:44  
Great response! Does yours actually have the plug in it? I've never seen one with a plug. Do you know where to get them?



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phil(va)

05-27-2006 18:45:08




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 Re: To20 checking timing with timeing light? in reply to Jerry/MT, 05-25-2006 16:42:27  
I have no idea where you can get a plug, but you can make one out of a stopper or cork float or maybe a wine bottle cork, etc. You should do so. Once I had a TO-35 that a mouse crawled into that hole and raised a family. The moisture caused the clutch to freeze to the flywheel and all the efforts I could make would not free it (and I tried most all of them). Had to split the tractor and replace clutch.

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dfitch

05-26-2006 03:49:01




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 Re: To20 checking timing with timeing light? in reply to Jerry/MT, 05-25-2006 16:42:27  
Yes mine does have the plug, but I have never seen them advertised. The next time I can remember to take my camera out to the shed I'll send you a picture of it.



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Gene in La.

05-27-2006 20:29:56




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 Re: To20 checking timing with timeing light? in reply to dfitch, 05-26-2006 03:49:01  
Please send a Picture: I looked and I didn't see anything like a removable plug, if I was looking in correct place! Gene in La.



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dfitch

05-28-2006 08:29:17




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 Re: To20 checking timing with timeing light? in reply to Gene in La., 05-27-2006 20:29:56  
The timing hole is located 4 inches directly
straight down from the starter hosing.

I'll be glad to send pictures if you would drop me an email ddfitch at htc dot net

If you do not have a hole 4 inches below the bottom of the starter then you probably do not have a TO model but a TE instead. What is the serial number on the steering column. The timing marks are located two different places on the TE depending on the serial number.

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gshadel

05-25-2006 09:12:21




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 Re: To20 checking timing with timeing light? in reply to dfitch, 05-25-2006 04:31:44  
Every point is right on the money. Good post! If you don't have a tach, 400 engine RPMs = to 145 PTO RPMS, which is a little easier to count.

You can easily use a "modern" 12V auto timing light on a 6V tractor. The pickup clamp goes on the #1 plug wire, like normal, and you need a 12V source. I've used a 12V battery charger, and pulled my VW up close so I can connct the timing light leads to the VW battery. Works great.

George

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