Like Bob said you may have the M&W system that used the IH liftall valving. With that system the pressure line went in where the pump drive shaft did and the suction hole inside the unit was blocked. Looks like that's where your pressure line may be going.
If so like Bob said the liftall operating lever needs locked to the rear for pressure out the side port going to the remote control valve. Then the lever on the remote control valve is used to direct pressure.
Also will ad that if you have the system I mention the IH relief valve inside the liftall unit was used for pressure relief.
Also forgot to say with that set up the relief pressure was raised to 1000 PSI with part included. GPM was reduced some with the setup compared to not going through the liftall system.
This post was edited by D Slater at 18:38:20 09/29/13 2 times.
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