F 350 4WD Pickup V8-351 5.8L VIN H EFI (1997)
Oil Pressure Gauge: Description and Operation
Description
The oil pressure gauge is a magnetic movement design consisting of a bobbin/coil assembly, a return to zero magnet and a primary magnet. The shaft
and pointer are connected to the primary magnet. The bobbin/coil assembly is pressed into a metal housing which has two holes for dial mounting.
Operation
The gauge operates through a pressure-activated switch. When the engine is started engine oil pressure closes the switch, providing a ground circuit
for the gauge coil. Current flow through the gauge coil to ground causes the primary magnet and pointer to rotate, providing an oil pressure reading on
the dial face.
The oil pressure gauge does not require adjustment, calibration or maintenance. Also, never remove the pointer indicator from its shaft.
