BMC 15 diesel stop valve.

[GBW]

Mine has become stiff and the solenoid sometimes fails to actuate it.

I read somewhere it is not uncommon and needs freeing.

I have eventually realised that the screws holding the assembly to the rest of the injection pump are Torx headed.

However, one is T9.

That size seems impossible to source.

 

Any help please?

[Tracy D'arth]

A 12 sided ring spanner will fit. They are 12 point heads not torx IIRC.

[GBW]

It is impossible to fit a spanner into the space available.  The surrounding casting means a box type spanner or socket seems the only solution.  A Torx 10 fits one screw but the other is smaller.

You are correct about 12 sided though (I have a spare in my workshop).

Commence search for 12 sided box spanner!

Later;-

A butchered 1/4" ring spanner (OD of the ring ground down) fits.  My sockets are 6 sided 3/8" and below.

Even later;-

Removing the assembly confers no rewards.  Maybe it is a push fit but pulling invites damage.  

It seems possible to add lubricant through the idling damper access although it doesn't seem to loosen it.

Edited July 6, 2022 by GBW