re assm 6.4 crank spacer???? - Ford Powerstroke Diesel Forum
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Old 04-20-2013, 03:33 PM
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re assm 6.4 crank spacer????

Need to know how to position the spacer that the rear main seal rides on.there is a dowel hole for it but no dowel pin in the crank?I know that it has to be postioned correctly since the flex plate has a counter balance on it.Any help?? thanks Stan
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Old 04-20-2013, 03:56 PM
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dowel pin on spacer goes towards the flywheel. fly wheel goes on one way.
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Old 04-20-2013, 05:30 PM
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if you're talking about the flexplate adapter you're not supposed to remove that. It is machined true after it is bolted to the crankshaft.

It's there because the engine, being of international origin, would not use the same flexplate/flywheel in a medium duty application.

I understand that this adapter is in the way of removing the camshaft, unfortunately for 6.0s and 6.4s the crank must be lowered before removing the camshaft.
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Old 04-20-2013, 07:30 PM
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I realize that now.But what if you need to replace the crank gear then what?ford does sell new bolts[torque to yield] so it can be serviced.What do you do if you need to replace the crank gear?i just need to know the relationship between the carnk gear keyway and the dowel hole in the spacer.then all will be fine.Thanks Stan
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Old 04-22-2013, 06:43 PM
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couldn't tell you. I know for sure there's no procedure in the manual for anything you describe
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Old 04-22-2013, 07:15 PM
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Quote:
Originally Posted by sinner6.0L View Post
couldn't tell you. I know for sure there's no procedure in the manual for anything you describe
That's an incorrect statement, sir.

Quote:
Originally Posted by Ford Workshop Manual
NOTICE: To prevent engine damage, do not remove the rear primary crankshaft flange bolts under any circumstances. If the flange is removed and reinstalled, it will result in engine vibration and premature transmission component wear.
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Old 12-06-2013, 11:48 PM
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6.4 crankshaft adapter

Quote:
Originally Posted by ruslow View Post
Need to know how to position the spacer that the rear main seal rides on.there is a dowel hole for it but no dowel pin in the crank?I know that it has to be postioned correctly since the flex plate has a counter balance on it.Any help?? thanks Stan
So what did you figure out? I have the same problem on a motor I rebuilt.
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Old 12-07-2013, 01:02 AM
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there is hole drilled on the flex plate adaptor to index 180* from the crank shaft gear alignment pin.

the only way to make sure its correct is to make sure that dowel hole on the fp adaptor is directly 180* from the pin that holds the crank gear in place

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Old 12-07-2013, 05:25 AM
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Yes but has someone done this procedure and has it worked out ok for them. Or do they have a continuous vibration.
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Old 12-07-2013, 09:17 AM
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truck had bad vibration. the flex plate adaptor was installed wrong by someone due to the crankshaft not having a dowel hole to index

looking at an prevoius shortblock the cranks dowel hole was drilled 180* from the pin that holds the crank gear inplace realigned and problem solved

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