37 temperature dash unit

M

marshall k

Member
Greetings: Removed sight glass temp unit in order to re-grain dashboard. car has been in extended storage and I secured temp unit dash height. Went to install dash and found unit up side down near the floor. No damage but the sight glass now full of the red fluid. Re-installed in dash and the fluid has not lowered. Thinking a number of warm engine cycles may help ? Has this happened to anyone? temp unit worked ok prior to removal. Thanks!
 
I have no first hand experience with it, but I have seen a post that suggested holding the gauge end in your hand and swinging the capillary end around over your head in a circular motion to exert centrifugal force on the fluid toward the engine end.
 
Cold pulls the fluid back into the tubing, may take a few cycles, I had some nos 36 ones that had your problem and I set them so the bulb was lower, the dash part with the top up a little from the bottom--3 came right back with just one cycle, one I left alone for a year in unheated area, all good now
 
You have air bubbles in the line which must find their way to the bulb. I've done the heat/cool method; hanging bulb up with a ******** attached at the bottom, and as mentioned above, fastening the line to a broomstick and swinging around rapidly. Eventually, a combination of all methods should work for you.
 
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