Repairing a Mindman valve .
Repairing a valve
Once the spool is out. clean it, and make sure that the 'O' rings are in good order. Apply a small amount of light lubricant and reinsert into the body.
Reassemble the valve, making sure that the dots in figure 1 are aligned once again.
Now you have your valve back together, you can refit it to the manifold. Test it thoroughly, to make sure it is 'switching' correctly.