Re: 2N Hydraulic Problem LOCATED

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Posted by Tim Daley(MI) on October 06, 2018 at 06:51:22 [URL] [DELETE] :

In Reply to: 2N Hydraulic Problem LOCATED posted by Jack - Iowa on October 05, 2018 at 15:37:29:

I don't know where you got that p/n prefix, but it is either a '9N' or an '8N' -two different parts and no they don't interchange. The 9N-526 Ram Rod fastens to the 545 ram arm shaft a clevis pin and cotter pin fastener. I don't know what the differences are, but something changed which would indicate they do not interchange. If a part was used on different modules without any revisions being made, it would retain the original part prefix that it was first used on. For example, the exhaust manifold is p/n 9N-9425. It never changed so is used on the 9N, 2N, and 8N and listed as such in the MPC's. The July, 1947 MPC, the first parts book for the 8N, lists both the 9N-545 arm and an 8N-545 arm and the modules used on. You can go to our MANUALS forum and look at the MPC's yourself, even download a copy to your PC or save it in a folder. I'm also curious as to how you broke yours. That's a pretty beefy part to simply just break, unless there was something else seriously wrong. Can you post pictures? As for a replacement part, you may have to get a whole used 9N top cover with cylinder and parts included in order to find one. I don't think anyone repops just the arm. Try the usual on-line auction sites, our ADS forum, and your local boneyard. Someone may have just a top cover they'd be willing to part with too. If so, it may easier to just replace the entire top cover with lift and cylinder attached than trying to just replace the arm. Either way, I suggest since you have the cover already off, go ahead and replace the cylinder, piston, and O-Ring and avoid any hiccups later on. You may possibly could also drop the pump and do a complete cleaning/rebuild on it. How mucky was the oil? At least clean the valve chambers and install a new safety relief valve.

Tim Daley(MI)


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