09-11-2018, 02:10 AM
(This post was last modified: 09-11-2018, 02:11 AM by Tony Press.)
(08-11-2018, 07:57 PM)John Mims Wrote: I've just fitted relined front brake shoes, with new endaps. New brake shoe springs, cams and bushes. The brake drums are new cast ones. Top pivots were secure.
When shimming the top pivot, I followed the advice in Woodrow, to pack them until the shoes were "just touching the drum", before replacing the hub.
With the hub back on (with new bearings) and the drum screwed down tightly, about 2/3 of a turn is free, but the remaining third is way too tight.
As I said, they are new cast drums so will be perfectly round, so can anybody explain a) what is happening, and b) how I rectify it?
Thanks
John
John,
You say-
"When shimming the top pivot, I followed the advice in Woodrow, to pack them until the shoes were "just touching the drum", before replacing the hub."
I assume these are aluminium shoes - I believe the linings should touch the drum with the 'brake cam levers' vertical, so they move forward when released, allowing braking effort to be applied when pulled back to vertical - it is useful if the front brakes are a little slack so the cams don't pull tight when the wheels are turned.
Just my thoughts.