2N Hydro pump rebuild question

I'm having trouble getting the pump cam into the blocks. One cam block is quite loose and the other is incredibly tight and can only fit in one direction. If I'm not mistaken the side with the "lip" is meant to face the other so they don't slip out of the piston assembly during operation. One of them can't fit that way and wouldn't be secure.

What are the tolerances of these supposed to be and how much slop is okay?
 
It has been several hours with no response, so I think others see your question as I do, which is to say I don't know what you are asking. Expand, clarify please.
 
Huh. Okay.

The brass bearings that fit in the scotch yokes in the hydraulic pump are the subject of my question. How loose/tight should they be. I have one that I can actually wobble with the cam installed and one that is too tight to slip on the cam in the proper direction. Strangely enough the tight one will go on backwards but I can't freely turn it.
 
http://www.external_link.com/images/reference/9N_2N_8N_ITShop_Manual_FO-4.pdf#page=38&zoom=125,-17,470

#15 fits in #16. I have 2 #16s. One is loose enough to wobble a small bit. The other is so tight it won't press on by hand when facing the proper direction.

I know the tight one is not the proper ID. After using my calipers on it I'm confident that I can use a series of super fine sand paper and a dowel to match it to #15 for a smooth fit. On the loose #16; how loose is *too* loose?
 
Okay, one more try;

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http://www.external_link.com/images/reference/9N_2N_8N_ITShop_Manual_FO-4.pdf#page=38&zoom=125,-17,470

Fig. FO92 (yes I know my tractor is a 2N, but the 2/9N diagram doesn't show all the parts)

Part #15 is the Pump Cam.

Parts #16a and #16b are the brass cam blocks, wear parts replaced in an overhaul.

I have one part #16 that fits loosely enough to rattle and clearly see light through the gap between cam and block.

I have one part #16 that is too tight to slip over the cam in the proper orientation(fits backwards though) regardless of what end of the cam I try and fit it to.
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Now, I want to know how much slop, space, thousandths, or whatever measurement up to and including "a little loose is fine, rattling on the cam ain't" those brass parts are allowed to have..

I honestly can't think of any other way to frame my question.
 
Okay, one more try;

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http://www.external_link.com/images..._Manual_FO-4.pdf#page=38&zoom=125,-17,470

Fig. FO92 (yes I know my tractor is a 2N, but the 2/9N diagram doesn't show all the parts)

Part #15 is the Pump Cam.

Parts #16a and #16b are the brass cam blocks, wear parts replaced in an overhaul.

I have one part #16 that fits loosely enough to rattle and clearly see light through the gap between cam and block.

I have one part #16 that is too tight to slip over the cam in the proper orientation(fits backwards though) regardless of what end of the cam I try and fit it to.
------------
Now, I want to know how much slop, space, thousandths, or whatever measurement up to and including "a little loose is fine, rattling on the cam ain't" those brass parts are allowed to have..

I honestly can't think of any other way to frame my question.
 
Okay, one more try;

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FO-4 Manual, page 100.

Fig. FO153 (yes I know my tractor is a 2N, but the 2/9N diagram doesn't show all the parts)

Part #15 is the Pump Cam.

Parts #16a and #16b are the brass cam blocks, wear parts replaced in an overhaul.

I have one part #16 that fits loosely enough to rattle and clearly see light through the gap between cam and block.

I have one part #16 that is too tight to slip over the cam in the proper orientation(fits backwards though) regardless of what end of the cam I try and fit it to.
------------
Now, I want to know how much slop, space, thousandths, or whatever measurement up to and including "a little loose is fine, rattling on the cam ain't" those brass parts are allowed to have..

I honestly can't think of any other way to frame my question.
 
(quoted from post at 10:56:45 02/08/16) Not trying to be rude, but does no one visiting this thread understand what I'm saying or is it that no one has an answer? The silence is killin' me.
Post a picture or two of your problem and perhaps it will help with responses. I personally don't understand the description.

TOH
 
I have never rebuilt a Hydro Pump on one of these before, but it sounds like you might have got a bad kit, where did you buy it?

If those two #16 parts are supposed to be identical then you definately got a bad kit.

And maybe post some pictures of where the parts go and how they fit, pictures always help.
 

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