Just bought our third fourtrak and the auto hubs seem not to engage.The front shafts are turning in 4wd but no acton at the wheels i took off the hubs and both are clean and well greased,the locking and unlocking can be done with an ignorant hand.Im not sure what to look for as signs of it being broken! The 5 lug plate behind the 50p nut on the shaft seems to have got abuse on both sides of the jeep 1 lug faces the engine and another faces towards the wheel that is the 1 thats got wore back and scored.The other two fourtraks were 88\89 manual hubs that never failed, any advice welcome!