K11 Owners Group

Ernie-NH · Posted: Tue May 27, 2014 5:17 pm Post subject: Cam lobe question...

Hello all...

Hey.... does anyone done/or know the degree of difficulty in replacing a cam lobe, either intake or exhaust ???? Special tools, skills etc

Thanks in advance for the 'hedz up' before I go further ....

Best regards, ride safe all.....// Ernie in NH
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SugarHillCTD · Posted: Tue May 27, 2014 7:18 pm Post subject:

Removing the intake or exhaust camshaft?

Spark plugs out.

Remove the valve cover, HES and timing covers.

Zip tie the timing chain to the crankshaft sprocket

Zip tie the timing chain to the camshaft sprockets thru the holes in the sprockets

(now you cannot reassemble with incorrect timing)

Remove the cam chain tensioner- others will say to just retract it, but I have found it easier to just unbolt the tensioner

Using the hex on the camshaft, hold the camshaft while removing the bolt that holds the sprocket onto the camshaft. Slide the sprocket off the cam- it only goes back on one way- don't worry

Unbolt the 5 caps that hold the camshaft down.

Done.

NOTE: if you are taking the exhaust cam out, many if not all of the valve buckets are going to fall out. A second pair of hands helps here.
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Number 6 · Posted: Tue May 27, 2014 8:35 pm Post subject:

SugarHillCTD · Posted: Tue May 27, 2014 9:40 pm Post subject:

My own paranoia.

I was always worried about the cam chain moving on the crankshaft sprocket if I couldn't see it.

And with the timing cover staying in place, re-torquing the camshaft sprocket bolts was easier with the timing cover off- my opinion.
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John & Cathy

'92 K100RS4V Pearl White SOLD
'04 K1200GT
IBA Several-SS1k, BBG, 50CC NYC to S.F.

Number 6 · Posted: Tue May 27, 2014 9:48 pm Post subject:

dave n · Posted: Wed May 28, 2014 5:20 pm Post subject:

I would also mark the camshaft retaining caps so as to reinstall in the same place.

And before installing & torquing the camshaft sprocket check your valve clearances - although on second thoughts having the sprocket on makes it easier to hold camshaft in place for checking - sometimes the valve springs tension will rotate the camshaft from desired position.
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