August 25 - The saga continues.
I attacked two possible causes for the oil warning light not going out:
- 1. There was a short in the wire from the instrument panel to the pressure switch
2. There was something clogging the oil galleries.
I examined a length of the wire from under the seat to the switch. The wire was heat affected, but there was no sign of a break in the insulation which would result in a short circuit, causing the light to stay on. I replaced that length of wire and started the motor. Not fixed.
Then I checked the setting of the pressure regulating valve to make sure that the top of the adjusting screw was 3/8" below the top of the pump body.
Next I introduced pressurized air into the engine via the pressure switch hole. I first set the pressure at about 4 psi and blew that air in for a few moments. The I set the pressure at 30 psi and blew air into the engine until I could hear the air bubbling through the oil in the tank. Replaced the switch and started the engine. Light out!
I can't explain why blowing air through the galleries would affect the operation of the pressure switch, which is located before the oil gets into the engine. However, if the problem is fixed, I can get my annual roadworthiness inspection on Monday, pay the registration fee, and start riding.
Thanks for following my trail through the wilderness.