need help in finding a hydraulic pump for mm445.

glvu

Member
My hydraulic pump for mm445 is not producing any pressure. Has anyone found a suitable aftermarket pump replacement?
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HIP in galesburg il would be able to either fix your
old one or help you identify a new one. Hydraulic
industrial products.
 
Which pump are you talking about? the standard Tel-O-Flo pump, or the Industrial side pump?
I was just talking about the Industrial pump on the 602 loader thread.
MMDEL
 
Just read your 602 post and was wondering how I can use the industrial pump from the bottom left to power my tel-o-flo. How do I connect them? more photos of the industrial pump
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It could be rebuilt at a hydraulic shop.
Make sure that there is no stuck Valves
bad drive couplings and so on.
 
That wouldn't be feasible be cause the passage from the 3PT Pump to the 3PT is internal. And you would not have any Power Steering
MMDEL
 
NO. Powersteering does not work. It was thinking of splitting the pressure line from the industrial pump and T-off to the powersteering and loader. Powersteering has connection that passes pressure to the 3PT. What do you think?
 
Your 3PT pump has a priority flow valve built into the pump for fluid to the PS. this valve makes sure the PS has priority for fluid over anything else so as to not effect steering when other hyd levers are engaged. It also controls the amount of pressure to the PS. As I just reread your post. You can't plumb into the feed for the 3PT. It is a passage through the differential case and up to the 3PT housing. The external line goes directly to the PS, and the return line dumps back into the 3PT reservoir. May I suggest that you remove the PS line from the pump, and crank it over to see if there is any pressure coming out the port. It is quite likely that the coupling that drives the pump is wore out and the pump is not turning. Did this problem come on gradually or did it quit all of a sudden? If it Quit all of a sudden, the coupling is no doubt shot. It is not a big job to remove the pump to examine. Drain fluid first.
MMDEL
 
"Did this problem come on gradually or did it quit all of a sudden?" I don't know. Bought the tractor with the 3pt not working. Where can I purchase this coupling If it was the problem?
 

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