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Remove Primary Timing chain w/o loosening jack-shaft bolt

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Old 06-17-2012, 03:54 PM   #1
Jasonx521
San Diego
2000 XLT 4 door 4x4 SOHC
 
Join Date: Dec 2005
Posts: 34

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(Original Poster)
Remove Primary Timing chain w/o loosening jack-shaft bolt

Well, about a week ago I remove my balance shaft, cut the b.s. chain, and plugged the oil holes to balance shaft.

Side note:
I can say for sure that the engine definitely vibrates more. At idle it runs smooth, but you can feel a hum type vibration, and around the 2-3k rpm I can feel it again, then around 5-6k rpm you can again feel it.

And this motor has no oil, water, or air leaks; with new injectors, gaskets, exhaust, main & rod bearings, oil pump, and all timing chains, gears, tensioners, and guides. (all sensors are new as well "motorcraft only")
It ran very smooth before removing the b.s., but made this noise like a bad power steering pump. (I did remove my serp. belt and the noise was still heard)

After removing the b.s. the noise was gone and the engine is quiet again.

I now want to install a new balance shaft, sprockets, chain, guide, and tensioner. (You can buy the bearings for the b.s., but not the bushing type bearing for the sprocket shaft and they are only standard size bearings, so you would not be able to turn the (2) shafts down)

I have perfected removing the upper pan with out pulling the engine, so I plan on installing with engine in the truck. (drop front axle, move the power steering cooler, and then remove upper pan {you have to move it just right, but it will come out toward the rear without lifting the engine})

ACTUAL QUESTION:
I really hope to be able to remove the primary guide, tensioner, and then remove the primary chain without loosening the jack-shaft bolt? Anybody tried this?

I need to slide the primary crankshaft sprocket off the crankshaft to install new b.s. sprocket and chain.

That way I could just hold the crankshaft and right camshaft at TDC (good access from the front of engine) and install the new balance shaft, then primary chain, guide, tensioner, and so on and not have to re-time everything.
????
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Old 06-17-2012, 09:01 PM   #2
2000StreetRod
Elite Explorer
Greenville, SC
 
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2000 Sport SOHC 2WD
 
Join Date: May 2009
Posts: 5,554

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removing primary chain

It is possible to replace the primary timing chain guide and tensioner without removing the primary chain. However, even with the guide and tensioner removed I doubt there is enough slack in the chain to get it off the crankshaft sprocket.
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Hopefully I'm wrong but I suspect the primary chain, crankshaft sprocket, and the jackshaft sprocket will have to be removed as an assembly. To do that the jackshaft sprocket retaining bolt will have to be removed and the camshafts will have to be retimed. You can try sliding the crankshaft sprocket with chain forward and see if you can get it past the end of the crankshaft. Good luck and let us know if its possible.




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Old 07-23-2012, 10:17 AM   #3
Explor2006
 
Join Date: Jul 2012
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Jasonx521

Can you tell me where you are getting your b.s. bearings, I need to find a set.

Thanks
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