Question about The Times Case Corporation Tractors International Harvestor
I just got a Case-1390 tractor and all of the controls labels are worn or missing. I need the basic transmission, transfer case and rear hydraulic control layout
Older case machines used a fluid identified as TCH (Torque Converter Hydraulic) for both the transmission and the hydraulic system. It's not readily available so has been replaced by default by separate products. Hydraulic fluid for the cylinder system, and transmission fluid for the torque converter. I'm currently using NAPA TDH with no problems.
Posted on Sep 08, 2009
not so fast,, yes thick hydraulic oil can cause slow hydraulics and if the hydraulics speed up when warm then this may be your problem. if they dont then you need to look at possible problems with the pump, the spool, or linkage to spool. remember that speed is flow, a pump can have good pressure but lousy flow. also there should be some kind of pressure relief valve in system if this stuck open then it will let oil go back to tank causing your problem. there is no quick answer to your problem but there are a lot of possibilities. need to do some diagnosing!
Posted on Mar 11, 2010
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