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Ford 9N, 2N & 8N Discussion Forum
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the gears and timing cover

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FarmerDawn

04-03-2006 17:01:06




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Aren't they BEAUTIFUL!?!?! I don't know what else to say about them. None of the teeth look chipped or damaged. I'm not honestly sure what else I should check. But wow!




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FarmerDawn

04-03-2006 17:04:40




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 timing gear cover in reply to FarmerDawn, 04-03-2006 17:01:06  
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Here is the inside of the timing gear cover (both parts). Does it look ok?



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FarmerDawn

04-03-2006 17:03:25




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 timing marks in reply to FarmerDawn, 04-03-2006 17:01:06  
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I found the timing mark on the camshaft, that goes against the crankshaft. It's marked with an arrow on the lower right. There is also a mark that is like a timing mark in the middle of the camshaft gear. It looks to me like there is a central axle it sits on there, and that these marks line up the inner and outer parts of that "axle". I can't find what it is in my books, though. Does anyone know?

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TheOldHokie

04-03-2006 17:31:33




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 Re: timing marks in reply to FarmerDawn, 04-03-2006 17:03:25  
That axle is the camshaft. I believe the inner marks are for indexing the gear to the camshaft - I'm not an 8N expert but that's what it looks like off the top of my head. My 9n didn't have that setup. The only wearing part of the front cover is where it meets the end of the camshaft. It acts as a thrust plate to set the camshaft endplay. I believe you have to check that with the cover and gasket temporarily installed. I see you took the ziploc suggestion ;-)

Your on a roll...

TOH

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FarmerDawn

04-03-2006 17:45:23




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 Re: timing marks in reply to TheOldHokie, 04-03-2006 17:31:33  
Oh yeah! You or someone recommended ziplocs back at the beginning, and I'm almost through my second box of them! LOL

Thanks for the info on what that other mark is.

I hope I didn't mess up by checking the endplay BEFORE I took of the timing gear cover? (eek?)



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TheOldHokie

04-03-2006 17:54:07




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 Re: timing marks in reply to FarmerDawn, 04-03-2006 17:45:23  
Hobo had the corect info on the other mark - my guess was off target and my FO-4 doesn't have any info on that setup.

WRT ziploc's you don't need to individually bag each item!

While it might have been informative to know the endplay before disassembly it still needs to be checked on reassembly because the thickness of the cover gasket adjusts it (or at least on a front mount).

TOH



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FarmerDawn

04-03-2006 18:16:09




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 Re: timing marks in reply to TheOldHokie, 04-03-2006 17:54:07  
LOL! I don't individually bag each item! LOL

Well... mostly. :-)

WHEW on the endplay thing.



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Hobo,NC

04-03-2006 17:19:32




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 Re: timing marks in reply to FarmerDawn, 04-03-2006 17:03:25  
Fer git the inner mark it izz a index mark to fit the dist. Drive gear to the shaft. Take time and align the outer mark to the outer mark on the crank gear and lets see were # 1 piston izz. It you still have the valves in it check and see iffin you kin find TDC # 1 my way.
An old trick to see if valve timing is right on or (on the rock) would be to remove the head or lifter cover and bring #1 cyl up to compression stroke. While you are rotating the engine coming up on #1 TDC, #4 should be on overlap exhaust valve closing, intake valve opening) on the rock move the crank either way and a valve will move. This should happen right on TDC #1. If a valve on #4 is wide open or doing nothing at all, the valve timing is off... weather it's the cam gear . crank, gear or key way, broken cam, etc. The reason # 4 is the cyl in question is because that is the "middle" cyl in the firing order 1-2-4-3. The "middle cyl should always be in overlap (on the rock). for instance, on a chevy the firing order is 1-8-4-3-6-5-7-2, so if we wanted to see if the valve timing was off we would look at cyl# 6 to see if it was on overlap rolling the engine over to #1 TDC. It should overlap right at #1 TDC at 0 degrees. This izz E-Zee to do and you should be able to figger this out, if so then you kin master find'in TDC on most enny engine No timing marks needed. Also you will see the crank turns two times to make the cam turn one time. Hope this helps

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FarmerDawn

04-03-2006 18:05:46




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 Re: timing marks in reply to Hobo,NC, 04-03-2006 17:19:32  
Well phooey!! I went and did it too fast after all this!!! The pistons are no longer in there, Hobo. :-(

Now what? Shall I put them back?

Phooey!!!



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Hobo,NC

04-03-2006 18:29:17




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 Re: timing marks in reply to FarmerDawn, 04-03-2006 18:05:46  
No U-kin use the crank journals as a reference just gotta imagine it has a piston rod connected to it. Interested to know if the #1 crank journal izz at 12 o’clock or 3 o’clock when the marks line up



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FarmerDawn

04-03-2006 18:46:41




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 Re: timing marks in reply to Hobo,NC, 04-03-2006 18:29:17  
OK! Cool!



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TheOldHokie

04-03-2006 17:34:16




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 Re: timing marks in reply to Hobo,NC, 04-03-2006 17:19:32  
This is a side mount motor?

TOH



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FarmerDawn

04-03-2006 17:42:43




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 Re: timing marks in reply to TheOldHokie, 04-03-2006 17:34:16  
Yes. Side mount.



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