Posted by The tractor vet on October 06, 2012 at 06:28:01 from (18.104.22.168):
In Reply to: 1456 IH FARMALL ? posted by barry brenda vaughn on October 06, 2012 at 05:43:57:
That tractor has THREE hyd pumps. One for the rear hitch and remotes , one for the PTo that is built into the PTo and One for steering , brakes , T/a and cooling and lubing the trans and rear end . The pump in question is behind the MCV located on the left side of the center section. Now maybe the pump is bad and maybe not . First things to check is is the Hyd. oil low ?? , is the hyd. filter plugged ? replace it along with the o/ring. Next start and run the engine at around 1800-2000 RPM and turn the steering wheel to the left and keep turning it as tis will help bleed any air in the system and help the pump pick up prime . If this does not do anything in a couple min. then it is time to look deeper into this problem. If you have no idea about working on the MCV then get someone that does. As the problem may be stuck valves broken springs bad pump . and other cheap trick is to once you have the fluid level up to the full make you can dump and addional five gallon in as it will not hurt a thing . Doing so will eliminate the chances of it sucking air at the o/ring between the center section and the rear end . But since you say the three point is working i do not think that is the problem i believe it is a MCV issue.
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