Help

[liam.]

Hi guys
Just cleaning one of my Cummins 504
Can anyone tell me what this is and why is it electrically powered
Thanks
Liam

[GILow]

Looks like an oil pressure sender to me.

[Sailmonkey]

It’s an oil pressure sender, not electrically powered. It changes its resistance as the oil pressure changes.

[liam.]

Thanks GIlow ��

[GILow]

Originally Posted by liam.

Thanks GIlow ��

AND SailMonkey!

[liam.]

Thanks for that Sailmonkey
May I ask what the electrical wire is for ?

[a64pilot]

If you don’t have an oil pressure gauge, it could be an oil pressure switch to drive the buzzer, it could also be an oil pressure switch to run a Hobbs meter.
First I guess is to ensure it’s connected to the oil galley, then it’s oil related of course.

I’d be curious to know what the cut wires are for.

[Sailmonkey]

Originally Posted by liam.

Thanks for that Sailmonkey
May I ask what the electrical wire is for ?

You mean the wire attached to it?

Its the wire that the gauge uses to measure the resistance of the sender unit. If you disconnect that wire the gauge will either read zero or high, depending on what the indicating sense is.

[liam.]

Thanks for that Sailmonkey ��������

[liam.]

Yea I’m almost afraid to find out
Many thanks ��