Trouble locking into 4x4

[Deerhurst]

Originally Posted by cadillacdude1975

Thanks. I have the nissan service manual. I had to get it running before i fooled with the hubs. It will eventually get a set of warn manual lockers. But I’d bet the pink slip it has never seen any off-road action. The pic of the hubs pretty much confirms that lol

You never know. My truck looks like it's hardly seen a gravel road but it's been to Moab and I've wheeled it pretty hard. It's all about taking care of it.



If you need manual hubs, I have a set of Mile Markers that are take offs from my truck. Those hubs served me well from sand to snow to Moab. I only replaced them because I got some Warns for $40/pr at a junk yard.

[OldGreyBeast]

It takes very little wear on the auto hubs to stop them from working. I'm pretty sure I still have mine laying around, if you want to try to fix yours you're welcome to them for cost of shipping.

[cadillacdude1975]

Originally Posted by Deerhurst

If you need manual hubs, I have a set of Mile Markers that are take offs from my truck. Those hubs served me well from sand to snow to Moab. I only replaced them because I got some Warns for $40/pr at a junk yard.

Will send you a message.

[my_hardbody]

Somewhat of newbie when it comes to D21's and 4x4 vehicles in general. I've been having an issue with my 4x4 not engaging. When It's in 2 wheel drive the front cv axles do not spin. When it's in 4x4H the front left cv axle spins but not the right front cv axle. The troubleshooting was done while the truck was rolling, had a buddy drive it while I looked under. I have automatic locking hubs and have read about how unreliable they are via this thread. I'm hoping it's not the diff that's busted. Has anyone had this issue? If so, what ended up being the defective part? Any help or advise would be greatly appreciated guys.

1994 D21 4x4 VG30

[Deerhurst]

Originally Posted by my_hardbody

Somewhat of newbie when it comes to D21's and 4x4 vehicles in general. I've been having an issue with my 4x4 not engaging. When It's in 2 wheel drive the front cv axles do not spin. When it's in 4x4H the front left cv axle spins but not the right front cv axle. The troubleshooting was done while the truck was rolling, had a buddy drive it while I looked under. I have automatic locking hubs and have read about how unreliable they are via this thread. I'm hoping it's not the diff that's busted. Has anyone had this issue? If so, what ended up being the defective part? Any help or advise would be greatly appreciated guys.

1994 D21 4x4 VG30

Lift the truck up wit all 4 wheels off the ground and drop it in 4wd. Then look and see what spins. Might put a little resistance on each front tire and see if the other spins. Open diff so one side will spin if it doesn't have traction while the other won't.



If you can hold a tire and the axle spins the hub isn't locking.

[my_hardbody]

Originally Posted by Deerhurst

Lift the truck up wit all 4 wheels off the ground and drop it in 4wd. Then look and see what spins. Might put a little resistance on each front tire and see if the other spins. Open diff so one side will spin if it doesn't have traction while the other won't.



If you can hold a tire and the axle spins the hub isn't locking.

I'll give this a shot this weekend and report the outcome. I'm sure someone can benefit from this if we get it solved. Thanks Deerhurst.

[Deerhurst]

Be careful and get an extra set of hands.

[my_hardbody]

Originally Posted by Deerhurst

Lift the truck up wit all 4 wheels off the ground and drop it in 4wd. Then look and see what spins. Might put a little resistance on each front tire and see if the other spins. Open diff so one side will spin if it doesn't have traction while the other won't.



If you can hold a tire and the axle spins the hub isn't locking.

Well after taking all the troubleshooting steps in the manual as well as the ones provided by Deerhurst, I found the Automatic hubs were worn out. I replaced them with the Mile marker 435's and will be going off road this weekend. Thanks for the help and hope this helps someone else in the future.

[Deerhurst]

Sorry I'm late with the reply.



Glad you found the issue! I ran MMs for years. The chrome eventually flaked off but they kept working! They were always easy to spin and always locked up.