Rear hub & brake
As I proceed with the A10 explorations, I am again impressed by the quality of materials
& sturdy construction quality of the individual parts. The Rear hub & brake is no
exception, made to last for an eternity, given minimal maintenance is carried out. The
brake linings are OK for some more 1000s miles, after a cleaning with emery paper &
petrol. Lightly greased the ends of the brake shoes & the shaft of the cam. checked
the springs and put it together again. The fulcrum bolt should be tightened after the
brake is back on the bike, hold down the brake pedal & tighten the nut, this will
center the brake shoes.
Check the brake drum\sprocket. Replace if the teeth are worn or the brake surface is badly
scored. Otherwise give it a light emery paper polish & clean in petrol. Check that the
bearing is in good shape.
The bearing retainers' slots were quite damaged, a file made them fine again. To remove
the two hub bearings the retainers must be unscrewed, LH threads. Get new bearings if
necessary, clean all parts and apply high quality grease. My A10's bearings were in need
of replacement. Got them out by using heat on the hub while keeping the bearings cold with
a rag dipped in ice cold water. The new bearings spent a day in the freezer, and with the
hub preheated with the heating gun, it was very easy to drive them into their seating
without using any brute force. The freezer\heating technique can be used with any bearing
job whenever practical. Try it next time, you'll be amazed.
Different hub\brake parts needed some cosmetics. Getting old paint (and any other old
remains) off is easy with a heat gun. At the back is the hub dust cover, on the plunger
A10 hub it's a tight push fit and a in my case a VERY tight pull off... Had to battle with
it for a long time to get it loose to get access to the right bearing. Used heating, WD40
& force, it finally gave up and came loose without too much damage.