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Old 05-20-2020, 05:13 PM   #1
Billythefish
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Default 240, rear crankshaft oil seal

Hi All
I'm replacing the rear crankshaft oil seal on my 91 240, Am I ok to run the engine in situ with flywheel & clutch back on before refitting gearbox? The reason I'm asking is that, I replaced the seal last week & it leaked worse than ever, so have to do it all again, must have done something wrong!, only thing I can see, is possibly the seal is not in dead square. I've had 2 240's in the past, bought this one to bring back to former glory, it had been neglected in the past, leaked oil when I got it. I did the flame trap a couple of moths ago.
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Old 05-21-2020, 08:02 AM   #2
oldschoolvolvo
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Yes you can run the engine without the gearbox installed. I did it for the same reason you describe.
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Old 05-21-2020, 08:53 AM   #3
smoothdurban
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You will need to find some shorter bolts to attach the starter unless you plan on adding a manual crank starter.
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Old 05-21-2020, 12:10 PM   #4
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Quote:
Originally Posted by smoothdurban View Post
You will need to find some shorter bolts to attach the starter unless you plan on adding a manual crank starter.
Or a bunch of washers or larger nuts or a combination thereof
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Old 05-21-2020, 03:34 PM   #5
dl242gt
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When you install the seal. It may be that the crankshaft has a ridge from the lip of the seal using that surface for all these years. You can install the seal slightly deeper so the lip on the seal is on a fresh surface. Genuine volvo is the best seal to use.
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Old 05-21-2020, 03:39 PM   #6
2manyturbos
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Quote:
Originally Posted by smoothdurban View Post
You will need to find some shorter bolts to attach the starter unless you plan on adding a manual crank starter.
Just use a couple of 1/2" drive sockets as spacers. I have done this several times to make sure a RMS is not leaking.
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Old 05-21-2020, 03:48 PM   #7
Billythefish
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Thanks for those couipler of tips, I was going to hunt for somer shorter bolts, but skts seems a good idea, and I didn't seem to feel a ridge on the crank, but I can see a discolored line so I'll avoid that,, let you all know Sunday, how it turns out!
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Old 05-21-2020, 05:01 PM   #8
2manyturbos
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^^

I use a flat washer under the head of the bolt to keep the bolt from tearing up the chrome on my sockets. The socket it just like having a stack of 30+ washers.
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Old 05-24-2020, 07:14 AM   #9
Billythefish
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Thanks everyone for help & advice, all done, no leaks,The difference between Volvo OEM seal & the one I bought from a specialist volvoparts online is incredible. tried to upload a photo, don"t know if it'll work. Next job Front Flexi brake pipes
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Old 05-24-2020, 07:18 AM   #10
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https://drive.google.com/file/d/14AP...ew?usp=sharing
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Old 05-24-2020, 07:19 AM   #11
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https://drive.google.com/file/d/1MMW...ew?usp=sharing
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Old 05-24-2020, 07:20 AM   #12
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Spot the difference!!!!!
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