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JD 855 hydraulics

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oldgtoracer
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Posts: 1
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2005-11-04          118908

I thought I ran across a post about "boosting" or increasing hydraulic pressure on an 855 (compact 4wd). I believe it had something to do with adjusting a valve. Thanks.

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JD 855 hydraulics

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dsg
Join Date: Jun 1999
Posts: 528 Franklin, Maine
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2005-11-04          118910

Don't do it, you WILL break something.

David ....

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JD 855 hydraulics

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tchris
Join Date: Dec 2005
Posts: 3 Minnesota
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2005-12-14          121041

It's safe to do IF you put a gauge into one of the SCV couplers and set it to factory specs. They do tend to drift lower with age and use. The adjustment involves adding additional shims (available from JD) under the pressure release spring. If I remember right, it's accessed by rmoving the sheet metal panel right below the seat. ....

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