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CB750 Caliper rattle

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Lobo:
New back to biking after 30yrs - and can't find any tolerances / specs on this.  Basically my 1971 K2's caliper moves up & down by upto 1/8" due slop in the carrier. This pin (I guess) is OK as a snug fit into the upper / lower caliper holder mounts (& shows no waisting) - so the play is within the holder itself. This translates into a fairly mechanical 'clunk-clunk' noise when transversing bumps etc  at low speed. It, of course, goes away if any drag on the brake.
I pointed this out at the recent MOT - no concerns at all. So, is it normal, and if not any suggestions eg bushings - or am I up for a new holder? I read in the various maintenance manuals about calipers seizing on with lack of use - can't ever imagine mine seizing with this amount of free play!
Cheers.

Waggles:
As you so rightly say, they are more prone to seizing than excess play so I'd say no, its not normal, mine certainly doesn't do that. It may have got through the MOT but I wouldn't be happy with it, the slopping around could cause damage.

Dunno the cost of new but I would replace arm and possibly spindle too ( it may look OK and the arm will wear first but it might be damaged ) a good second hand set shouldn't be too hard to find if cost is an issue

florence:
That does not sound right to me.  I would take it apart and inspect.

Bryanj:
There is a Honda bulletin on this, bug me early in the new year when I ain't dragging booze round the country for god knows how many hours a shift and i will find it and scan it!!

Lobo:
Thanks guys, thanks Bryanj,

Yup, had the thing apart (twice) and have to say, nothing particularly alarming. There is minimal slop in the pin, but, I guess when magnified 6" away at the caliper head it does become quite apparent.
I'm a little 'reluctant' to simply buy a second hand carrier off ebay etc, as in all likelihood I'll simply end up a similarly worn part.  Hence my question on bushings...

Will now wait to see if Bryanj can shed light.... thanks again so far
Lobo

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