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SOHC.co.uk Forums => Other Bikes => Topic started by: Laverda Dave on April 17, 2021, 11:05:54 AM

Title: Crankshaft oil seal fitting
Post by: Laverda Dave on April 17, 2021, 11:05:54 AM

Hi All,

A quick question........................

I ordered a complete seal kit for the Z400J and this included the two crankshaft oil seals.
I fitted the seals and all appeared to be fine, crackshaft turned, the lip was properly in place so I bolted the two crankcase halves together.  Skip forward a couple of hours and the tidy up and I noticed the old crankshaft seals had a ridge around the outside of the seal (as do Honda seals) to fit inside a machined groove in the crankcases. The new seals didn't have the ridge.

Question is do you think the new seals are OK? They are from Wemoto and they are a reputable company. The seals are Japan made. I really dont want to take thje engine apart but then again I dont want the new seals to blow under pressure.

What does the forum think....?

Title: Re: Crankshaft oil seal fitting
Post by: Lynx on April 17, 2021, 11:15:40 AM

As long as your engine breather is not blocked, they shouldn't be under pressure and so, they should be fine!

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Title: Re: Crankshaft oil seal fitting
Post by: Bryanj on April 17, 2021, 11:51:23 AM

Agreed

Title: Re: Crankshaft oil seal fitting
Post by: Laverda Dave on April 17, 2021, 11:54:28 AM

Phew.....😨. Thanks guys👍. I can sleep tonight!