Topic: Re: Bulldozer- weak axle
|Ford 9N, 2N & 8N Discussion Forum|
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|Bulldozer said: (quoted from post at 13:38:26 01/31/13) Have reseached this front loader attachment thing some more.|
Found the sales brochure for the Ford Industrial Step-On loader you previously posted.
Believe is the same as the Ford extra heavy duty series 703 loader.
Also the brackets shown in your last post are hydraulic pump attachment brackets for thr FORD 68 standard loader, Ford heavy duty loader and Ford 79 standard loader and not the loader frame front attachment bracket.
The graphic appears to be is taken from the Supplement No 3, master parts books.
This parts book show two 1" bolts in Figure 4 for attaching loader fram to bracket.
However, the bracket shown in figure 6 does not appear to interface with an N series, maybe a 600 series.
I agree with you on the location of the loader frame front support for all of the Ford Dearborn front end loaders where the attachment is to a replacement king pin or to the axle center support weldment.
It appears that on the Ford 19-8A or 19-22 the original king pin is replaced with another king pin with a steel plate welded to the king pin. The king pin plate has two holes that interface with a steel plate welded to the loader frame.
Maybe other Ford loaders manufactured for N series has this type of front attachment design.
However , found the parts manual for the
Ford 19-7 ,where front attachment appears to interface with four bolt holes on the axle center support engine pan holes. There are two bracket plates, one each side of the center support.
A free body diagram of the loader support frame indicates a force is applied at the
axle hole ~ 2800# ,based on 1000# payload and bucket weight at lowest position. The greatest load is applied to the from axle in the lowest bucket position.
Need to firm up some geometry to better converge on this applied axle force at the center.
I know there is low probability for castropic failure of the cast axle part, but it would not get an FAA certification for flight.
It's a tractor.
Still do not understand the rotation feature front axle.
Seems like for a front end loader it would more desirable for the front axle to be fixed.
All the NH & JD utility tractor brochures show a front end loader on the cover. This still must be the hot ticker demand for utility tractors.
Look - you can argue all you want but I build and sell reproductions of these brackets and I have studied them to death. They all attach to the bolster in one way or another and the brackets in that parts diagram are the front hanger for all of the variously numbered variants of the Ford industrial loaders. The loader has two large pins in the subframe that fit into the large reinforced holes on the bottom outside corners of that front hanger. The 8N version of that hanger also had struts that attach to the bottom of the bolster to further stiffen the hanger.
There have been a multitude of variations on this central design and some versions mount the pump to the hanger - others mount the pump on the loader frame. But the bolster bracket always acts as the front hanger for the loader and all of that weight is carried by the axle center section. It never gets airborne and it handles the additional load fine.
Off the top of my head I can't think of of any model rubber tired agricultural tractor that has a fixed front axle.
The picture below is one of my reproductions of the Dearborn (aka Ford) designed hanger for the 19-8 loader used on the Ford 9N. It is the design that is the basis for all of the later variants.
This post was edited by TheOldHokie at 15:30:51 01/31/13 2 times.
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| Yes, the unpainted plate, welded to the replacement king pin seems to be the design for the Dearborn N series front end loaders. |
Have found Dearborn parts manuals where this replacement king pin/plate weldment was bolted to the loader frame.
Have seen this same plate/king pin in operating manuals with 9N riveted center support and the 8N welment center support.
Have studied many archives where a guy bought a Dearborn loader and could not figure out to attach it to the front. Nothing fit. Believe they finally realized the original king pin would have to removed.
If you look at the design of the NH 1500 utility tractor, JD utility series 1000,2000,3000 all have fixed front axles to the frame.
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