Info needed: Smiths "Maxfield" tranmission compressor- What vehicle?

[hrpearce]

Originally Posted by Jacques Reed

Just to add:

The pump turns over freely but I noticed I could not fully disengage it- gear to rear of pump position. Seems the spring mechanism at the selector fork only allowed it to move slightly back and forth on the pump crank gear and not fully rearward and off it.

I removed the spring and it slides smoothly off the crank gear. It may need attention at the selector shaft and fork. It is not good idea to drive a vehicle with a transmission pump still in gear!

Cheers,

If I remember right the two cogs in the unit remain engaged, it is the large cog and the gearbox cog that get engaged to turn the pump on.