425 again…movement problems…

   / 425 again…movement problems… #51  
Yes Terry will be your best bet.

If you look on line to explain how a variable displacement pump works, it may give you some insight when discussing it. Wild guess on my part is that one of the pistons is not in sequence causing the weak movement and noise and you will need to send your pump in for rebuild.
 
   / 425 again…movement problems… #52  
Can you install a pressure gauge in the charge circuit for the hydrostatic pump(s)? Watch the charge pressure at standstill, then trying to drive forward & reverse. It should not change significantly under any of those conditions. I do not know what the charge pressure should be though.
 
   / 425 again…movement problems…
  • Thread Starter
#53  
Can you install a pressure gauge in the charge circuit for the hydrostatic pump(s)? Watch the charge pressure at standstill, then trying to drive forward & reverse. It should not change significantly under any of those conditions. I do not know what the charge pressure should be though.
Hmmm interesting idea…I’ll have to study on how to do that.
 
   / 425 again…movement problems…
  • Thread Starter
#54  
Finally another update…(too much cold, snow, rain, more snow…🤪)
I’ll attach two videos to detail a little better. (I’ve forgotten—can I add videos? Can’t seem to figure it out)
 
   / 425 again…movement problems… #55  
Finally another update…(too much cold, snow, rain, more snow…🤪)
I’ll attach two videos to detail a little better. (I’ve forgotten—can I add videos? Can’t seem to figure it out)
I've posted videos to YouTube then linked to them here. Works well.

 
   / 425 again…movement problems… #56  
Linked to wrong video. It is fireworks.
 
   / 425 again…movement problems…
  • Thread Starter
#57  
Finally another update…(too much cold, snow, rain, more snow…🤪)
I’ll attach two videos to detail a little better. (I’ve forgotten—can I add videos? Can’t seem to figure it out)
I've posted videos to YouTube then linked to them here. Works well.

Thanks for letting me know how…I couldn’t remember if I ever had posted one before—my memory has just too much crap going on and I can’t keep up with where, when, what, etc. I’ve done 😜
 
   / 425 again…movement problems…
  • Thread Starter
#58  
 
   / 425 again…movement problems…
  • Thread Starter
#59  
 
   / 425 again…movement problems…
  • Thread Starter
#60  
And again, pedaling forward there’s hardly any noise like this…and it moves ahead fine. Backwards and it’ll stall at slightest incline.(I haven’t had the time to make the call to Terry and crew)
 

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