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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Valve stem seal replacement with head in place?
Post Info TOPIC: Valve stem seal replacement with head in place?
mossproof


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Valve stem seal replacement with head in place?
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Is it possible to change the valve stem seals with the head in situ (piston tdc of course)? How close is the piston/valve clearance at tdc to hold the valves in place?  Has anyone tried?

Cheers,

Simon.



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Keith89


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It's doable but it's also only 6 bolts and two nuts more and the head is off



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2005 ttr supermoto with dtx 125 wheels and front forks stainless sleeves to adapt ttr clamps to fit forks. 
mossproof


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Agreed, but I hate undoing head bolts in flimsy ally heads/barrels unless absolutely necessary - I believe the threads have a limited undo/do up cycle lifespan!
Cheers,
Simon.



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Keith89


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Well yeah can be done the springs are a pain to compress again I use a 13mm socket and put the volleys back in with a magnet and screw driver



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2005 ttr supermoto with dtx 125 wheels and front forks stainless sleeves to adapt ttr clamps to fit forks. 
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