Transfer case engages, front driveline spins but no 4x4
So i recently had a new transfer case put in my 87 6.9 and went hunting today had to stick it in 4 hi but all i had was rear wheel spin. You can hear the transfer case engage and the hubs were locked in but no front wheel spin. Any suggestions.
Unlock your hubs and put your transfer case in gear and then see if you can turn the front drive shaft by hand. If you can then your transfer case is not actually in gear or there is a problem with it. If it won't turn by hand then put your transfer case back in two wheel drive and make sure you can turn it, then you can lock your hubs in and isolate which one is bad if they are the problem.
Jack up both front wheels, with the transfer case in nuetral or in two wheel drive, turn one wheel by hand while the hubs are locked. The other tire should turn the opposite direction. If it doesn't turn the other side at all get someone to look while you turn and make sure the axles are turning at the ujoints,If only the axle that you are turning you may have a problem in the diff, most likely the spider gears. You can also just jack up one side and turn the wheel while someone looks at the axle, it will have some resistance, but should turn, then do the other side. this will eliminate the hubs.