Staghound Hydramatic Transmission Question

[Malcolm Towrie]

That'll be the low oil pressure switches for the warning lights on the dash.
The Hydramatics in the Chaffee and the Staghound have the same switches.

On the Staghound, the lights just warn that the engine has stalled as described above. On the Chaffee the switches are also tied into the starter circuit to prevent cranking an engine that is already running.

The switch set point is 60psi, since the trannies are supposed to generate at least 60 psi at hot idle. In reality, one of our Chaffee transmissions only puts out about 55 psi (although it rises above 60 psi as soon as rpm is raised, so it can come at idle with engine running.
Malcolm