dismantled the transfer box expecting something wrong
no problem crisp clean well made all metal and solid
turns to the gear sticking out from the motor rotates is very lumpy and the fan connected to the motor just jumping and springing back so dismantles the casing and have a closer look the plastic gear is molded onto a metal sleeve with ridges like a coarse gear
so i thought fair enough the plastic gear had stripped so not transferring any power
get a couple off spares and combine the postage
go to miles tools and solent powertools websites
phoned them both up yes the both have or can get it no problem its part 802 in the diagram


http://www.mtmc.co.uk/Bosch-GOP-10,8V-L ... 50350.aspx