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K100-forum.com » Technical, repair and troubleshooting » Frame, fairing and wheels » unclear about front forks

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1Back to top Go down   unclear about front forks Empty unclear about front forks Mon Aug 13, 2012 1:23 pm

ridefar

ridefar
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I changed the front fork seals on my 1989 K100rs. Looked in the Clymers manual for fork oil capacity to find more than one choice. So I tried the lower amount with Belray 10 wt that I had on the shelf. The problem is that oil is leaking past the new seals. Stopped by the BMW dealer to ask. They said that it is possible but did not know for sure that the oil could be different in each fork. Anyone know what amount of oil to use in these forks?

    

2Back to top Go down   unclear about front forks Empty Re: unclear about front forks Mon Aug 13, 2012 1:39 pm

92KK 84WW Olaf

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Ridefar,

I have the Clymer manual but a lot of bikes have had changes to the front end. Can you put up some photos? I did notice that for some versions the right and left are not identical.

92KK


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

3Back to top Go down   unclear about front forks Empty Re: unclear about front forks Mon Aug 13, 2012 9:03 pm

Rick G

Rick G
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It is very easy to damage the seal lip when reassembling those forks. This is most likely what has happened.
I am presuming yours is a 16valve model and so the forks will take 400ml if you have had the forks apart and drained them completly, which you will need to do to put new seals in.
It is possible that you got the wrong seals as Ks have 3 different sizes of fork leg 41mm, 41.3mm and 41.7mm the latter being yours.
I use 10weight oil in my 16v and it suits me but depending on your weight and riding style you may prefer a lighter grade


__________________________________________________
"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 1999 K1100 LT with a Big Block 1200
    

4Back to top Go down   unclear about front forks Empty Re: unclear about front forks Tue Aug 14, 2012 8:40 am

ridefar

ridefar
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thanks, think I had the wrong seals. New ones are on the way.

    

5Back to top Go down   unclear about front forks Empty Re: unclear about front forks Tue Aug 14, 2012 8:55 am

dutchie

dutchie
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Maybe this could help?
unclear about front forks Fork_o14

unclear about front forks Fork_o15

unclear about front forks Fork_o16

unclear about front forks Fork_o17

grtz Dick


__________________________________________________
K75RT 1996 unclear about front forks Klettern
K100RT 1986
    

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