Author Topic: Temperature gauge engine probe - washer or gasket?  (Read 1606 times)

GM

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Temperature gauge engine probe - washer or gasket?
« on: May 13, 2020, 06:11:58 »
Hi all,
I got my temperature gauge/probe/cable back from Palo Alto Speedometer and I've re-installed it in the center instrument cluster. I've threaded the cable back through the firewall into the engine bay, but before re-connecting the probe to the engine, is there a gasket or washer between the probe and the opening? PASpeedo didn't include one, and I don't recall seeing one when I removed it.
Thanks!
Gary
1971 280SL - Sold
(98 from the end of production)
DB180 Silver Gray Metallic
Black MB Tex

Aaron h

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Re: Temperature gauge engine probe - washer or gasket?
« Reply #1 on: May 13, 2020, 06:48:33 »
There is no gasket between the capillary tube and the fitting it screws into, as it's a tapered compression fit.  However, there is a crush washer between the cylinder head and the fitting that the capillary tube screws into. 

GM

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Re: Temperature gauge engine probe - washer or gasket?
« Reply #2 on: May 13, 2020, 14:21:16 »
Thanks, Aaron! Do I change out that crush washer?
Gary
1971 280SL - Sold
(98 from the end of production)
DB180 Silver Gray Metallic
Black MB Tex

Aaron h

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Re: Temperature gauge engine probe - washer or gasket?
« Reply #3 on: May 13, 2020, 15:11:45 »
Unless it's leaking or has been removed I wouldn't worry about it, but the saying "While you're in Rome" comes to mind......

GM

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Re: Temperature gauge engine probe - washer or gasket?
« Reply #4 on: May 13, 2020, 15:24:00 »
Got it. Thx
Gary
1971 280SL - Sold
(98 from the end of production)
DB180 Silver Gray Metallic
Black MB Tex