Quote:
Originally Posted by houtxfdcapt
the original poster has a 240, can anyone tell me if the Oring is the same size in my 83 w123 300d turbo?
if so I need to do this repair also..
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To the best of my knowlege they are the same sized O-ring. Also it is the Size I used on my 84 300D Lift Pump.
If you are not leaking Diesel into your Crankcase Oil or as some have claimed that a leak there can also cause you to suck in the Crankcase Oil into the Lift Pump. You do not need to change it.
If you have decided to buy the Supply/Lift Pump kit (and the kit does not come with the O-ring) because you are having problems with you Lift Pump I would change O-ring since the Pump is alreay apart.
I changed mine only because I though I was begining to get some Diesel Fuel in my Crankcase Oil. I found that when I checked the Dip Stick my Oil level had risen slightly when I would have expected it to go down slightly.
So I change the O-ring and that fixed it.