A solenoid valve is mounted in the bore of a ferromagnetic journal. Mounting the solenoid valve in the journal conserves space on the firewall of a vehicle where the solenoid is typically located. MULTI-FUNCTIONAL WATER PUMP CONTROL VALVEJournal mounting also minimizes the length of the air line necessary to supply air to the solenoid valve. Use of a ferromagnetic journal as part of the magnetic circuit allows full use of the journal bore for the components of the solenoid valve. A leak vent path is provided as well as a principal vent path in the flux flanges of the solenoid valve.Forged Steel Valves The solenoid valve controls the flow of air through a seal which engages a rotating coupling of a clutch which operates a fan.  A solenoid valve for engaging and disengaging a clutch comprising: a coil; a bobbin; said coil wound around said bobbin; a plunger having first and second positions; a first flux flange;Check Valves a second flux flange having a stop portion comprising an outlet; an adapter affixed to said second flux flange; an extension affixed to said adapter; a first spring operating between said first flux flange and said plunger urging said plunger into said first position; a plug comprising an inlet affixed to said first flange; a seal; a second spring operable between said stop and said seal urging said seal into engagement with said clutch; said plunger includes at least one passageway therein; said stop includes at least one passageway therethrough, an axial bore and a transverse bore; a ferromagnetic journal having a bore; said solenoid residing within said ferromagnetic bore; and, when said coil is deenergized said plunger is in said first position engaging said plug prohibiting communication between said inlet and outlet; and, when said coil is energized said plunger is in said second position engaging said stop permitting communication between said inlet and outlet. The journal mounted solenoid valve is used to control the supply of air to a clutch. When no air is supplied the clutch is engaged driving a 125 horsepower fan on a truck engine. When air is supplied to the clutch, the fan is disengaged. Bearings mounted on the ferromagnetic journal allow the rotation of a belt drive sheave. In the absence of air pressure of approximately 150 psig the belt driven sheave and clutch are rotated in unison. When the high power fan is disengaged, air is supplied to the clutch so as to separate the clutch from the sheave. When the clutch is engaged once again the air previously supplied to the clutch must be evacuated through the principal vent which includes passageways and bores in the stop. The leakage vent functions when air is supplied through the solenoid valve to the coupling. A non-rotating seal under the urging of a spring operating between a support and the seal engages a coupling which is rotating in unison with the sheave. If leakage of air occurs at the interface of the seal and the coupling then it must be evacuated. Leakage is evacuated through apertures in a locking flange, through notches in the flux flanges, through a small air gap between the flux flanges and the bore of the journal, and through an aperture in the bore to ambient atmosphere.

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