oil pressure relief spring

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ewalt98
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oil pressure relief spring

Post by ewalt98 » Fri May 05, 2017 12:06 pm

Quick question for the experts.
I just changed the oil in my 82 aircooled westy, and at the same time, I checked the oil pressure relief valve and spring. The piston moved freely, and looked fine. I also bought a new spring for it, but when I compared the new one to the old one, the new one was about 2-3 mm longer. I've never changed the spring in the past 24 years, so I guess it could be normal wear on it? Or are there different springs for the late air cooled motors?
The one I got was from bus-depot, and they show that it is the same for the late 70's bus up to the 83.5 vanagon (and the water boxers too).
Thanks!
1982 Vanagon Westfalia Equiped

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sgkent
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Re: oil pressure relief spring

Post by sgkent » Mon May 08, 2017 7:09 am

there are specs for the spring and length in Bentley. You can use a bathroom scale and a dowel cut that length to approximate the compressed length. Cut a wooden dowel to the compressed length in Bentley and put it inside the spring. Compress the spring on a bathroom or postal scale etc - the pounds will go up slowly as you compress it until you hit the dowel and then you will see the pounds jump quickly. You will also feel / see the dowel touch whatever you are pushing down with.
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