Author Topic: Crankshaft oil seal fitting  (Read 649 times)

Offline Laverda Dave

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Crankshaft oil seal fitting
« 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....?
1976 Honda 400/4
1977 Rickman Honda CR750
1999 Honda VFR 800FX
1955 750 Dresda Triton
1978 Moto Morini 350 Sport
1978 Honda CB400/4 'Rat' bike
1982 Laverda 120 Jota

Offline Lynx

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Re: Crankshaft oil seal fitting
« Reply #1 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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Previous bikes include
1976 Honda CB400F Now sold :-(
CB350K3 x2
CB250G5
CX500C
VF500F2
VF1000FE

Offline Bryanj

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Re: Crankshaft oil seal fitting
« Reply #2 on: April 17, 2021, 11:51:23 AM »
Agreed

Offline Laverda Dave

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Re: Crankshaft oil seal fitting
« Reply #3 on: April 17, 2021, 11:54:28 AM »
Phew.....😨. Thanks guys👍. I can sleep tonight!
1976 Honda 400/4
1977 Rickman Honda CR750
1999 Honda VFR 800FX
1955 750 Dresda Triton
1978 Moto Morini 350 Sport
1978 Honda CB400/4 'Rat' bike
1982 Laverda 120 Jota

 

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