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690d pilot pressure adjust

W

wrc

Well-Known Member
Joined
Feb 20, 2014
Messages
156
Location
Topeka
can any one tell me the exact process to check and adjust pilot pressures on a 1987 690d deere? I believe I have seen in the past pressure should be 500 psi but I don't know where to start and have no manuals
 
A

AndrewC

Senior Member
Joined
Feb 2, 2013
Messages
458
Location
Miles away
Install a gauge with a 8 jic tee at the regulator under the control valve and run at slow idle. Adjust the regulator valve to 350-500 psiUntitled.jpg
 
W

wrc

Well-Known Member
Joined
Feb 20, 2014
Messages
156
Location
Topeka
thanks Andrew that's exactly the info I was looking for. now can you tell me where to look on the machine for the regulators?
 
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