JDcrawlers Messageboard

Sherburne is bout 1/2 way between Binghamton and utica ny, just lost mabey half of our snow to day but snowing now. Looks like gona get ot all back and mabey more. If the truck can't get there and the tractor can't the dozer is yet to disappoint, it's pulled them both out before
Eric

Built a grease gun with a pressure relife valve set to a tad over 250 psi with a guage built in. Clumbsy but better that blowing out roaler seals!

My love of these dozers started when my mother bought a 2 cylinder jd m, 1950, then i found out that they built a dozer w the same chassis. I was gogel- eyed ever sense. The adjustment on the track tensioners was very unbalanced inside to outside. I have eavened the spring tension but they are too t...

I must ask what the proper terms are for dozer blade movements? Angle, bevel, tilt, attack angle, ECT. When using terms it always a great idea to use terms properly so as to be on the same page. Thanks and will at some point post some pics of the blade on my 420c, maybe some overall pics of the doze...

Up date. I have decided to use a plane spherical bearing for the main pivot, 2 1/2 Id 4 3/8 od. Overkill but the eBay price was right, and more surface area. The spherical bearing is a high misalignment model, 14 deg one way, 28 deg total. On a 75 inch blade if I remember the math right gives about ...

This may sound strange but has any one used a 3 inch ball hitch for gooseneck trailers for the main pivot to build a 6 or 8 way conversion? I have a 56 420, but need to learn which inside frame blade it has as I am not familar with the differences in the types. Any help either way is much appreciate...

#1 no help here, sorry #2 endplay. endplay is the amount of travel along the length of a shaft for example, pulling sideways on a wheel, tighten up the wheel bearings, less end play. ( most typicaly wheel bearings are checked by hand in a rocking motion not a pulling motion ) #3 preload. preload, to...

After a quick look it seems to be a problem in the float latch accentuating perhaps a small amount of timing issue. Sill not sure of the origin of the sticking.

Thank you for the info. This is my first time with a dual piston valve. My first thought was that the piston was sticking and the slop in the linkage was causing an out of time condition.? Well will have to check into it more carefully and in-depth. Thanx for the help.

Not sure if it is the linkage for sure but the hydraulics wine when the sticking happens. And yes it is a factory valve. Is there a "rebuild kit"?
Thank you for the help and the web site.

New here, thank you for the sight, very much appreciated!javascript:emoticon(':D') Just bought a '56 420c, there are a few things that it needs done to it. but the first thing I'm looking at is rebuilding the valve that raises the blade. The valve sticks at times when trying to raise the blade. A tu...