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Discussion Starter · #1 ·
The head raises fine. But after 15 minutes or oil gets warmed up then it will not raise. After you shut it off and let it cool off, then it works fine again. The rest of the hydraulics seem to work fine. Any suggestions on what is wrong?
 

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Hydraulic pump belts may be loose or the belts are worn and riding in the bottom of the pulley groove. Also the 85's had a tendency to break the vertical weld on the hyd pump mounting bracket. The bracket will still be attached on top but the vertical welds will break and when the pump is under a load the bracket will flex up and the belts will get loose. There is more pressure on the pump when raising the head compared to the other hyd functions.
 
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