the 4wd lever engages & it seems to lock the propshaft but the front wheels dont pull. the grinding comes when i try to put it i gear, i push the clutch in & it grinds like hell so i have to lower the engine revs till it nearly stalls then it goes in. but when i put it in neutral & let it tick over the same thing happens, it also does not seem to disengage untill you put the brakes on. thanks for your reply