Вот самое интересное, про разборку и чистку соленоида:
"Refurbishing solenoids:
17. As per the photo, hacksaw slots into the crimped end, then use a flat bladed screw driver and hammer to gently bend these back.
18. Carefully remove the round end cap, the pintle and small washer (keep parts with corresponding soleniod)
19. repeat for the other solenoids.
20. remove the clip from the snout of the solendoid, then using allen key (2.5mm I think) unscrew the end fitting, noting how many turns it took.
21. Remove the spring and valve (note orientation).
22. using a 4mm drill bit, insert this into the bushings (from the bottom) and turn back and forth for 15secs to remove any debris (see this youtube video
http://www.youtube.com/watch?v=rB5Mw8lGh7A)
23.clean the parts and soleniod in a solvent (I used white spirit) and allow to dry.
24. check that the pintle drops under its own weight when inserted
25. once cleaned, put the end cap back in place and knock back over the crimping using a drift of some sort.
26. gently shake the solenoid up/down and make sure the pintle moves freely (you should hear it clearly)
27. reinsert the valve and spring
28. insert the screw cap the number of turns noted previously (4.5 turns for blue/green, 8 turns for black are recommended)
29. replace the clip on the snout end
30. Repeat cleaning process for other solenoids, note that the black solenoid has a smaller spring and valve and finer thread on screw cap.
31. Finally - if you have a multimeter, check the resistance across the connector terminals on each solenoid, it should read 5-7ohms."