Re: No oil horn sounding
The "No Oil" alarm is a beep every other second. If this is what you're hearing, either the VRO is intermitent & failing, OR a oil restriction exists, OR the oil line has air within it.
Air can be drawn into the oil line via a slight leak at any point between the VRO and the oil supply.
To remove air would be the same as installing a new VRO pump as follows:
(Priming The VRO Pump)
(J. Reeves)
When hooking up or installing a VRO whether it is a new or original VRO pump, it must be primed in order to dispel any air that might be in the oil line.
Have the Oil line attached to the engine fitting BUT detached from the VRO. Add a piece of fuel hose if necessary to the oil line so that it can be aimed into some sort of container.
Pump the oil primer bulb, catching the oil flowing out of the line into the container until you are absolutely sure that you have rid the oil line of every bit of air that might have been trapped there.
Now, connect the oil line to the VRO and secure it. When the oil line is secured, apply pressure to the oil primer bulb ONE TIME only. That's it.
When you're sure that all of the air has been eliminated and no restriction exists, and should the "No Oil" warning still prevail intermitently....... when this happens, apply some pressure to the oil primer bulb. If this causes the horn warning sound to cease, I would suspect that the VRO is in need of rebuilding or replacing.
