1973 Oil Pressure Sending Unit

[AFT1973]

Hi all. Trying to swap out the oil pressure sending unit on a ‘73 RR 400. Issue is the 9/16 wrench fitting has been rounded off before i “inherited” it. Any creative ideas? I tried to get a 14mm wrench on it, but wouldn’t slip on. Didn’t try any “gentle” persuasion yet. Wanted to ask first. See pic for photo of type of sender im working with.

Thanks

 

[jimbosride]

 

[AFT1973]

View attachment 1717120

thats the one vice grip I Don’t have. Will pick up and try

 

[kiwigtx]

Hi all. Trying to swap out the oil pressure sending unit on a ‘73 RR 400. Issue is the 9/16 wrench fitting has been rounded off before i “inherited” it. Any creative ideas? I tried to get a 14mm wrench on it, but wouldn’t slip on. Didn’t try any “gentle” persuasion yet. Wanted to ask first. See pic for photo of type of sender im working with.

Thanks

View attachment 1717106

If you have an old leather belt, try wrapping it around the body seam and pinch the ends up tight with some vice-grips....then try turning it.

Works the same way as an oil filter strap wrench.

 

[AFT1973]

If you have an old leather belt, try wrapping it around the body seam and pinch the ends up tight with some vice-grips....then try turning it.

Works the same way as an oil filter strap wrench.

Will try this weekend.

 

[bm02tj]

basin wrench or small pipe wrench

 

[AFT1973]

Hey all. Tried a strap wrench and vice grips. Strap wrench got the top brass dome to spin. But not the shaft. No love with the vice grips either.

Thinking may have to seperate head of unit from shaft and then easy out the shaft?

 

[Nacho-RT74]

At this stage, I think won’t matter destroy the top part to get all the piece removed… in pieces LOL.

 

[AFT1973]

At this stage, I think won’t matter destroy the top part to get all the piece removed… in pieces LOL.

Agreed. Unfortunately its going to be 105+ in So-Cal this week. So breaking it apart will wait for a cooler day.

Now that reminds me….. gotta get A/C up and running too.

 

[kiwigtx]

Hey all. Tried a strap wrench and vice grips. Strap wrench got the top brass dome to spin. But not the shaft. No love with the vice grips either.

Thinking may have to seperate head of unit from shaft and then easy out the shaft?

View attachment 1720330

View attachment 1720331

View attachment 1720332

Man that thread must be well rusted in place......sounds like it will be a S.O.B. to get out.

 

[AFT1973]

Man that thread must be well rusted in place......sounds like it will be a S.O.B. to get out.

To be honest. That’s what im afraid of most.

 

[DeltaV]

Put some Kroil oil or PB Blaster on the threads and let it soak in while you wait for better weather.

 

[AFT1973]

Put some Kroil oil or PB Blaster on the threads and let it soak in while you wait for better weather.

Gave it a good soaking yesterday. If tbe forecast pans out, may be breaking this unit apart & getting this done once and for all this werkrnd.