SOHC.co.uk Forums > CB350/400
Front brake squealing
K2-K6:
Yes, it needs to have the thread in fork casting intact to work as in the manual description.
Obviously a little fiddly to add another nut, but sufficient to let you adjust correctly in the mean time.
If its left floating around (indeterminate location) then unlikely to avoid continuing pad contact when unwanted.
The seal on these has to retract in dimension according to both sides needing clearance (any single piston hydraulic) with that little spring on adjustment screw "sharing" the clearance with the back pad in line with how much static gap you've set initially.
They are odd in their hybrid arrangement, with the need to chase pad wear with constant check and adjustment, paired with the usual hydraulic characteristics of piston return by that seal method common to general hydraulic disc brake protocol.
exvalvesetdabbler:
Yes there should be M6 thread in the fork casting for this.
Normally undo the lock nut and screw the big long countersunk screw to adjust the gap and then tighten the lock nut. I mostly use a feeler guage to set the gap to about 6-10 tho.
The bigger the gap the more the lever travels before the brakes bite.
Regards
Dave
Ken4004:
Hi Dave many thanks heli coils to the ready
Ken4004:
Thanks K2-K6
florence:
I have always found these brakes to squeal and actually find it reassuring that braking is taking place. I have found that the squealing stops when the brakes need adjusting. Once adjustment has been done, the squeal returns, but then so does proper braking force. As we have come to experience with this model, and due to the conservation of energy, braking results in kinetic energy being converted to heat and sound ;D
I never use grease but would recommend replacing the piston with a stainless steel version. Before I found these, rebuilding the calliper due to brake dragging caused by corrosion was a regular event, especially when ridden through the winter as I often do. Since changing to stainless steel I have managed to go six years and calliper working fine.
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