02 250 bad cross bearings? or something else. - Ford Powerstroke Diesel Forum
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Old 01-03-2013, 09:02 AM
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02 250 bad cross bearings? or something else.

02 f250 auto/4x4 98k miles. about a week ago started hearing chirping under the truck. i assumed the cross bearings/u joints whatever you want to call them, or the support bearing were on their way out on the rear driveshaft.

today jacked the rearend up, tranny in neutral, i spun the tires/driveshaft and couldnt get the sound to occur. there were no visible signs that they were shot that i could see, no play in all 3 joints and no play in the support bearing. I'm thinking maybe they need a load/more speed on them in order for the sound to occur? any help/ideas are appreciated..thanks

Jason
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Old 01-06-2013, 05:53 AM
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does anyone know what size universal joints our trucks take on the rear driveshaft?
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Old 01-27-2013, 02:39 PM
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ok replaced all 3 1410 joints with moog joints and also the support bearing with a timken bearing..in and out no problems back together no problems marked everything...didn't solve my squeaking noise, but all the u joints were shot anyhow truck has close to 100k on it so not a total waste.

however, i now have a vibration above 35 mph that was never there, im guessing i could have been off by one spline on the yoke though i did mark them pretty close but you never know..could anything else have thrown it off? bearing pressed out and back in no problems i wasn't banging on anything to throw off the balance i wouldn't think.

i might try tomorrow to pull the yoke back off and shift it over one spline see if it fixes it otherwise ill suck it up and take it to a shop to get rebalanced.

can anyone think of anything i may have overlooked?

Jason
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Old 01-28-2013, 03:17 PM
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took the yoke back off tonight and moved it over one spline to where i thought it could have gone..still have vibrations but they are a alot better which makes me believe this is where the yoke should have gone and that nothing i did was wrong, shaft just needs to be rebalanced....

anyone know how they balance driveshafts? they leave them on the car/truck or they take them off and mount them to a machine?
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Old 02-01-2013, 08:54 AM
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flange that bolts up to the rear axle was bent..must have done it pressing the old bearings out and didn't notice it..all is well now.
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