hydraulic pump (again)

   / hydraulic pump (again) #1  

TonyD0558

New member
Joined
May 24, 2013
Messages
6
Location
Princeton,NJ
Tractor
New Holland 555C, power trac pt 2425
New subscriber with a pt2425 that continues to go through hydraulic pumps (main). Has anyone ever found satisfactory fix and decent run time with one of these machines?
 
   / hydraulic pump (again) #2  
How many hours are you getting before losing a pump? Which pump do you mean by "main", PTO or tram? Is your primary use hydraulic PTO or non-rotating implement?

This doesn't sound normal, and I don't recall anyone else having to replace their pump more than once.
 
   / hydraulic pump (again) #3  
Welcome to TBN. Sorry for your pump issues. Perhaps a little more information would help.
Which pump is it?
The tram pump, the main PTO pump or the aux PTO/steering/FEL pump?
How many times has it failed?
Any clues from the factory?
 
   / hydraulic pump (again)
  • Thread Starter
#4  
How many hours are you getting before losing a pump? Which pump do you mean by "main", PTO or tram? Is your primary use hydraulic PTO or non-rotating implement?

This doesn't sound normal, and I don't recall anyone else having to replace their pump more than once.



It is the main pump that would supply power to the wheels. part# p154x19. This will be number 4. This time the pedals fwd and rev had zero tension or effect. then when re statrted the machine lept forward and continued forward untill shut down. Pt says send it back and pay $1000.00 to rebuild or $2000.00 to replace.

Killin my business...
 
   / hydraulic pump (again)
  • Thread Starter
#5  
It is the main pto pump. steering is fine.PT says ship it back $1000.00 to fix and $2000.00 to replace. part number is p154x19... 4th pump in under 500 total hours.
 
   / hydraulic pump (again) #6  
It is the main pump that would supply power to the wheels. part# p154x19. This will be number 4. This time the pedals fwd and rev had zero tension or effect. then when re statrted the machine lept forward and continued forward untill shut down. Pt says send it back and pay $1000.00 to rebuild or $2000.00 to replace.

Killin my business...

It is the main pto pump. steering is fine.PT says ship it back $1000.00 to fix and $2000.00 to replace. part number is p154x19... 4th pump in under 500 total hours.

The main PTO pump is not the same pump that supplies power to the wheels. ;)

The main PTO pump supplies power to the implements like mowers, brush cutter decks, trenchers, etc...

The aux PTO pump supplies power to the aux PTO (the knee lever operates the aux PTO) and also supplies power to the steering/lift circuit.

The variable volume pump supplies power to the wheels. Some folks refer to it as the tram pump or the drive pump. I think that is the one you are having problems with.

I have not heard of anyone going through multiple tram pumps. 4 is way too many.
What model year is the PT425 and how many hours are you getting on the pumps before they go bad?
 
   / hydraulic pump (again)
  • Thread Starter
#7  
Hi and thanks, yes the tram pump. I don't replace them myself a local shop does I just make the phone calls to P-T.
It was new model in 2005. I have only owned the business and the PT for the last five years and have used the machine for about 100 hours. Second time this has failed in those 100 or so hours.



The main PTO pump is not the same pump that supplies power to the wheels. ;)

The main PTO pump supplies power to the implements like mowers, brush cutter decks, trenchers, etc...

The aux PTO pump supplies power to the aux PTO (the knee lever operates the aux PTO) and also supplies power to the steering/lift circuit.

The variable volume pump supplies power to the wheels. Some folks refer to it as the tram pump or the drive pump. I think that is the one you are having problems with.

I have not heard of anyone going through multiple tram pumps. 4 is way too many.
What model year is the PT425 and how many hours are you getting on the pumps before they go bad?
 
   / hydraulic pump (again) #8  
This time the pedals fwd and rev had zero tension or effect. then when re statrted the machine lept forward and continued forward untill shut down
Stuck spool in the foot pedal cylinder?

4 pumps in 500 hours? Two the the last 100 hours? I can understand your being upset. I would confidently say that no one else on this site has that level of failure rate. I was expecting you to say something like "second pump in 2500 hours" (which would still be excessive).

When the last pump was replaced, did you drain and refill the hydraulic tank and replace the filter? Your oil must be contaminated to have that kind of problem.
 
   / hydraulic pump (again)
  • Thread Starter
#9  
I will make certain to replace the filter this time. as well as drain the hydraulic tank. Oil was contaminated last time but was clean this time. Frustrating, that when I use it on a job I wind up spending more to fix the machine than I charged for the job...
 

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