Tractor Repair: case 885xl, relief valve, hydraulic pressure

Question
QUESTION: hi i have a case 885xl lift arms will not lift implements plough, toppers etc . so i fitted a new hydraulic pump and filter plus oil still want lift but if i take a fork lift and lift implement up lift arms will take the weight and hold it

ANSWER:    The hydraulic relief valve is probably bad.  Even with a new pump it won't lift if the relief valve is weak or stuck open.

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QUESTION: hi thanks for the answer i am hopping to get on to it asap but is it possible you can direct me to where the hydraulic relief valve is on the tractor .. regards and thanks

Answer
  First I would suggest checking the hydraulic pressure with a gauge to eliminate any guessing.  You can plug a gauge into a remote coupler and pull the remote lever to do a quick check.  You should have at least 2000 psi.  The relief valve is located in the multiple control valve in front of the left rear axle.  The filter is mounted to the outside of the multiple control valve and the pump is mounted to the inside of it.   You can see a breakdown of the parts by going to caseih.com and selecting parts and services, then select search for parts.  Type your model in the search box and click search.  Select your model from the results and go to the hydraulic section.  You will be able to see exploded views of all the parts and the part numbers.