Hi all,
Made the time today to change the rollers. Alas not the 15 minutes per roller that I thought it would be. - Undo two 13mm bolts, slide off old roller, slide on new roller, fit end plate, do up two 13mm bolts and torque load.
Undoing the bolts was the easy part, following two days of soaking with WD40 the rollers would not shift - not been off in ten years, so well rusted on.
Upshot - jack caravan, position on axle stands, remove wheels, use hammer, chisels and junior hacksaw finally removing the first roller in two n half hours.
Replace with new roller, fully greased up inside in an effort to prevent rusting up. Second roller took less time using lessoned learnt from the first one.
Top tip for future: Remove rollers at yearly service and grease up inside to prevent rusting up, thereby when needed to be replaced it is a 15 minute job each side.
Hope this helps someone plan there own job on an old set of rollers.
Cheers
Colin