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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Re: jd dozer losing transmission pressure

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Roy Suomi

06-04-2013 21:02:52
76.190.196.2



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At this point , I'll tell you where I would go next.. I'd start the disassembly process and actually see where the leak is at..




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brock70

06-05-2013 19:57:41
70.194.0.17



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 Re: jd dozer losing transmission pressure in reply to Roy Suomi, 06-04-2013 21:02:52  
I think at this point I am going to put the cover back on with the new parts and see if the three things I found bad actually fix the problem, i.e the plugged bypass orifice, the barrel off the end of the screen that was lodged in the supply port, and the leaking supply line to the clutch valve.

I am not really sure I have an interior valve body leak and was asking if you have any knowledge of what happens when you pressurize the system with compressed air. I think that the tolerances in the spools are such that they are probably not air tight anyway. It was the air leaking by these that I had mentioned was leaking.

I will post the results when I get it back together and see what happens. Thanks again for your input.

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Roy Suomi

06-08-2013 12:59:52
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 Re: jd dozer losing transmission pressure in reply to brock70, 06-05-2013 19:57:41  
Most of HLR leaks are at either the 5 sealing rings at the rear of the clutchpack shaft or piston sealing rings



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brock70

06-06-2013 20:17:03
70.194.1.176



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 Re: jd dozer losing transmission pressure in reply to brock70, 06-05-2013 19:57:41  
BACK IN BUSINESS:
I got it back together today and everything seems to be normal again. The transmission oil pressure is 80 psi at idle and 175 at 1800 rpm. I am hoping what I have done fixed the problem. I did not put any hours on it but I will know for sure after a few hours of operation. Thanks again for the input.



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