BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


grantf2

grantf2
active member
active member
There seems to be a bit of debate as to if you should lubricate new oil seals before fitment, what is the current school of thought on this?

I am about to replace the large output oil seal on my '84 K100RS and want/need to get it right.


__________________________________________________
K100RS 1984
    

RicK G

RicK G
admin
admin
With a new OEM you should soak them in engine oil for 2 hours before fitting.  If you haven't got a genuine I hope you bought a Viton (brown) seal. I always oil a seal before using.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 2004 K1200GT 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

grantf2

grantf2
active member
active member
I only use genuine seals.

Thanks for that, I'll give them a good oil bath before fitment.


__________________________________________________
K100RS 1984
    

zonenfeile

zonenfeile
Gold member
Gold member


if the gearbox & clutch is out:  yes!
 
the maincourse for leakage is mostly not the big seal but the O-Ring pos 11 19x4 behind the clutch
 
Should you lube new oil seals before fitting? 4
 
and if you´ve got it apart anyway:
 
change the "bitch" seal for cluch pos 12
 
Should you lube new oil seals before fitting? 3


__________________________________________________
ex K1100/2

K- Wiki - or rtfm first

Regards from Hamburg

Olaf
    

grantf2

grantf2
active member
active member
Sorry for the confusion, I'm only changing the leaking rear diff seal.


__________________________________________________
K100RS 1984
    

Waz

Waz
Life time member
Life time member
When I done my final drive seal I did NOT soak in oil but I did put it in the freezer a couple of days before, it poped in easy.

    

Inge K.

Inge K.
VIP
VIP
With the exception of the OEM seals with a teflon lip (which have been used mostly as engine seals for around the last two decades) which mostly should be mounted dry.

It have been different submanufacturers of these during the years, from some it have also been printed on the seals that they should be mounted dry.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

billtr96sn

billtr96sn
Silver member
Silver member
The days of pre soaking oil seals went out with cork seals that needed swelling before they would seal. Modern seals (in the last 40years) do not need soaking as their materials are impervious to oil and that is how they keep it in place, apart from the lip on the shaft of course.


__________________________________________________
Something witty is supposed to go here... help!! Should you lube new oil seals before fitting? Uk-log10
http://www.billsbikechat.co.uk
    

RicK G

RicK G
admin
admin
From someone who has probably mounted more seals than I've had hot meals Follow the manufacturers instructions, if there is none which is quite common then I mount them without soaking but ALWAYS put a thin smear of lube on the seal lip and shaft surface to prevent the lip overheating from dry friction and burn the lip before the machine can supply oil to it.
Just an oily finger run around the seal will do the job you don't need to dip them in the oil can.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 2004 K1200GT 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum