- Conor W wrote:
- Took pliers to my busted unit for you
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Using Connors excellent picture
Pete sent me one of the later plastic body valves that have a spring clip holding it together so I decided to cut my original metal one apart.
The motor and Valve is held into the alloy body just by an "O" ring, it pushed out quite easily once I had access to the brass valve tip. A hole drilled from the valve end parallel to the threaded shaft would let you drive it out with a small rod, but really I doubt you could get it any cleaner than just spraying some cleaner into the air box hose port. I find it hard to believe that oil would be able to gum it up, the screw thread is quite fine and the motor has a ball race for a thrust bearing (to the left of the silver motor hidden by the plastic connector)
If it is oil gumming the valve how about supplying the stepper from an oil free source of air?
The black plastic tube on the tip of the valve actually goes over the spring. It would be possible to put the valve back together if only you could power the motor up to retract the valve stem otherwise it won't allow you to put the actuator back into the body, I'm not sure if GuzziDiag will allow you to stroke the valve.
The 4 pins are connected to the two motor sections 1-2 and 3-4 should measure the same resistance, these two windings are operated in 4 steps +/-. -/+ to advance the motor (about 64 tiny steps per revolution looking at the motor)