power steering pump

[Jon Wildsmith]

There is a valve? fitted onto the top banjo fitting on the ps pump. It has 2 pipes, one going to the vacuum pump and one to the rest of the vacuum circuit. Does anyone know what it is for? Also does it matter which way the pipes go on?

Total guess, is it some sort of idle up so if you're hauling on the steering at slow speeds the engine will get a bit of extra fuel? No idea about the pipes

 

[frank rabbets]

I'll check the vacuum circuit today.

Frank

 

[frank rabbets]

Yes pipes go up to what looks like a double diaphragm vacuum servo on the fuel pump linkage. Telltale signs show that the pushrod has been moving in and out but does not reach the linkage if pushed all the way in. However there are also telltale signs on the linkage showing that at certain times they do meet in a direction that would speed the idle. A mystery is that one of the pipes t'eed of the vacuum circuit ends in mid air. It comes off before the pipes to the servo so I'm baffled that the vacuum here is maintained. I'll start another thread.

Frank