Backhoe bobcat B250

   / bobcat B250 #1  

robert w white

New member
Joined
Apr 7, 2012
Messages
2
Location
st. croix
Tractor
earthforce {bobcat}B250
Bobcat B250,{earthforce250} Still can;t find problem with no brakes and little drive power. Purchased parts and service manuals. They refer to problems of "main relief valve", etc but in the hundred or so pages never show any of these items in thier locations, In addition these manuals never describe the function of the many "valves" they show. The manuals are of little value unless you ned to know where an obvious nut is. Anyone know of a web site with good details or some other publication that shows the function of these various items. The machine stilll has NO hydro brakes and little power foward or reverse. PLEASE Help Thanks
 
   / bobcat B250 #2  
Bueno la maquina de por si es lenta al ser hydrostatica la velocidad la consigues subiendo las revoluciones del motor. Mi equipo es B200 bobcat.
 
   / bobcat B250 #3  
I'm working on a machine with no hydraulic paking brake, no reverse and sluggish in forward. I'm looking for an answer myself. Went threw a lot on the machine
 
   / bobcat B250 #4  
It's a B250 as well can't find much info online
 
   / bobcat B250 #5  
Bueno el sistema de freno del B200 que yo tengo es mecanico. Referente a lo de reversa hay que empesar por verificar si la bomba hydrostatica esta tirando presion hacia el pedar de palante y pa tras.

https://www.dropbox.com/sc/bb561au7n7uae29/IfZTVa9eqt

Verifica si tu equipo tiene esta misma bomba hydrostatica de las fotos.
 
   / bobcat B250 #6  
B200=B250 more or less/mas o manos?
 
   / bobcat B250 #7  
Probably best to post on the Bobcat Construction Equipment Forum. If you're lucky SSDoxie will happen along with a response.
 
   / bobcat B250 #8  
No hydraulic brake with no or sluggish drive indicates low or no charge pressure. Possible charge pump failure, charge relief stuck, flushing valve stuck open, or hydrostatic pump worn so by-passing internally.
Here are couple pages about testing charge pressure and flusing valve. If charge pressure is low and will not adjust, the pump set needs to come out for inpsection.View attachment b250 charge pump,flushing valve test.pdf
 
   / bobcat B250 #9  
Hola goyo72, veo que conoces este tipo de maquinas,yo tengo una earth force ef-300,igual a la bobcat b250,el problema es que anda muy lenta,demasiado,casi no se mueve,he visto que tiene una valvula selenoide desconectada,con los cables cortados,y el problema es que no tiene los cables para conectarla,esto podria afectar al avance??gracias
 
 
Top