F6-Tranny and Diff numbers and degreasing

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Mar 2, 2012 | 04:23 PM

fordtreexr

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From: Cleveland, Ohio

F6-Tranny and Diff numbers and degreasing

I was able to clean some of the truck and camwe across these numbers on; the tranny-a big N-9 and also 59T-7006 and for the rear diff what looks like a date 9-48 (when made?) also by this is 19750 (production number??) then towards the bottom of the diff drivers side towards cab is 2015108 (what appearsto be an arrow pointing towardsmore #'s below) 2147145. Can they be parts #'s??Also found model i d plate that says model is WBTH. Any insight???

Mar 2, 2012 | 04:25 PM

fordtreexr

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From: Cleveland, Ohio

oops.. also looking at degreasing. any safe products??

Mar 2, 2012 | 11:53 PM

jmadsen

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From: Utah

Thats a non synchro 4 speed trans (59T). oven cleaner (dollar store) = cheap. and hot pressurized water along with a flathead screwdriver and metal putty knifes help to clean them up.

I borrowed a pressure washer and ran it to the hot water outlet in the house when cleaning up my 52 F6

Mar 3, 2012 | 08:28 AM

fordtreexr

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From: Cleveland, Ohio

thanks for that tranny i.d. I do have the factory shop manual but none of the #s from the parts match what I saw on the truck. Fluids questions too..I'm going to change fluids but the owners manual hasn't come in the mail yet. Diff takes gear lube 90W / tranny uses??? I put 30W non detergent oil in. Wasn't sure though because the shop manual says the heavy trucks used an oil with detergents in them, would a detergent oil at this point clean too much? I've been cleaning with a putty knife wire brush and screw driver. Never thought of oven cleaner. I didn't want to screw up any wires and such. Thank you.