BMW K bikes (Bricks)

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Matthew-Brisbane

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Hello Guys 


I'm a little confused on the tighten of the fly wheel centre nut 


Step 1  tighten to 140 Nm  ( understand ) 
Step 2  back off till lose  ( Understand ) 
Step 3  tighten to 50Nm  ( is that all ??? ) 
Step 4  Rotate to 50 Deg  ( I dont understand ??? ) 

    

RicK G

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That means you turn the nut a further 50° after it has been tightened to 50Nm. All I have ever done is hit it with the rattler to 90ft/lb then slack it off then take it to 50 which is setting 1.5 on my rattler and then turn it about 1/8th turn. Never had a problem.


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"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

Matthew-Brisbane

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thanks Rick 

So there is no final torque setting ? 

seem strange to me but then Im not an engineer

    

RicK G

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The head bolts are done the same way and many of the big diesels the rod bolts are done by measuring the stretch of the bolt with a micrometer.


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

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