AC B hydraulic pump.

   / AC B hydraulic pump. #1  

Dstrnad

New member
Joined
Mar 11, 2012
Messages
2
Location
South Boardman, MI
Tractor
Allis Chalmers B
I have an AC B with factory hydraulics, I took the pump apart to clean before i use. The oil was milk shaked and I have never used before, just got the tractor. Anyways I now have a left over check ball the size of a BB. Not sure where it goes. Does anybody have a breakdown of the pump? Also on the pump plungers there are two small groves, are there supposed to be o-rings on these? The only seal appers to be on the lever shaft?
Thanks

Dave
 
   / AC B hydraulic pump. #2  
There are five balls total. One suction ball and one discharge ball for each of the two plungers plus one relief valve ball. I'm not sure if they are all the same size or not. The plungers do not have o-rings.

acbpump1.jpg


acbpump2.jpg
 
   / AC B hydraulic pump.
  • Thread Starter
#3  
Thank you so much,very helpful. I found 1 ball is missing and the other in the wrong spot. Does anyone know how the intake ball check sleve comes out. The pin and ball is missing. Is it pressed in or threaded?

Thanks

Dave
 
   / AC B hydraulic pump. #4  
They are pressed in. They should be internally threaded so you can use a puller to remove. I understand some were not threaded however. I have sent you an email via Tractor By Net.
 

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