Firstly, I'm not sure if this post is in the right place.
I've stripped down and fully cleaned a Sturmey Archer AW 3 speed hub (1990). Its in a good condition, nothing looks 'worn'. I've replaced the pawl springs and the bearings. I've greased the bearings and re-oiled the lot. The shifter cable (inner and outer) is new and the twist grip shifter works well.
When fitted, I can only get two gears to engage, even with the adjuster indicator chain separated from the shifter cable, as to rule out any adjustment problems.
Following extensive indicator chain/spindle the two gears work well, shifting reliably with out slipping at any point.
There is no third gear to be found, at any position of the indicator spindle.
Can anyone suggest a cause or something that needs further adjustment?
Was there 3 gears engaging before you stripped this down or is this a hub you haven't used before. I know you have said that even without the linkage attached, you can't seem to get 3 gears, but what method of initial setup are you using?
With the trigger/grip set to gear 2, you should adjust the toggle chain linkage so that the shoulder of the main shaft of the toggle chain is in line with the edge of the hub axle when viewed through the hold in the axle nut.
What guide did you use when stripping the hub - does the guide you have used show that you have all internal/external parts in the correct order?
_________________SBDU Time Trial Specials : SB2692
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1978 Jan Raas Track Frame 531 DENTON Cycles :
DENTON Randonneur 2015 Hand Built (By My Own Hands) Reynolds 631 : Denton 1986 531c : Denton (Mercian Olympic) 1976 531 : Denton (Mercian Built) 1972 531 : Denton (Mercian Built) 1959 531http://raleigh-sb4059.com/