SOHC.co.uk Forums > CB350/400

Noisy steering head

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K2-K6:
You could do a "std headache setting check" sir  :)

Put you left index finger underneatth the top yoke next to the bearing, entry point about 7 o'clock with finger tip going round to 1 o'clock, hold front brake with right hand and rock bike (both wheel on ground) back and forth.

Any slack and you'll feel immediately the headstock moving as you rock it with vehicle weight on it.

McCabe-Thiele (Ted):
Reads like the Prostate finger of fudge test.

K2-K6:
 ;D ;D ;D

TrickyMicky:
I cannot fathom out how the headstock bearings would be making a noise when riding. Surely the handlebars are not moved to any great extent, and if they were knackered enough to make a noise then surely you would feel it through the poor handling. If it only occurs when starting out, I would be looking at the rear chain and wheel bearings. Try and enlist the help of a friend and give you a push along the road with a dead engine. I'm in the middle of cobbling together a CL160, and being a tight git I refitted the original drain pipes from the float bowls. They were fairly rigid after 55 years but I got them into position.  Refitted the rear wheel, chain, chain guard, and spun the rear wheel by hand. The noise was awful, you, you've guessed, it was the end of one of the drain pipes making love to the chain! Think outside the box and look everywhere.

Lobo:
Just a thought - you didn’t apply the book 60+ ft lbs of torque to the Steering Head Top during any rebuild did you? (That torque is for the uppermost / chromed nut). The steering head Top threaded piece is almost finger-torque tight, and is the hidden ‘nut’ immediately on top of the bearings.

Regardless, a strip down is warranted?

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