manual hubs not locking

[SRB1976]

Had a local mechanic install new Warn Premium locking hubs on my M1009 the other day and when I lock the hubs with the truck stationary with all four wheels on the ground. The front driveshaft still spins. Any idea what he did wrong?

 

[steve6x6x6]

They are pretty much idiot proff.

 

[Speddmon]

What is the state of the truck and transfer when you spin the driveshaft? Both front tires on or off the ground? One in the air? Transfer in neutral, in 4x4, 2x4? That can help determine what might be going on.

 

[gungearz]

Why don't you call him and ask...? Was he a ally mechanic or out of a shop...?

 

[DieselBob]

One of the most common errors is that people pack the hub and sliding collar with heavy axle grease then the collar can't slide to lock the stub axle to the hub.

 

[SRB1976]

What is the state of the truck and transfer when you spin the driveshaft? Both front tires on or off the ground? One in the air? Transfer in neutral, in 4x4, 2x4? That can help determine what might be going on.

All four wheels on the ground. Transfer case in 2hi. Front hubs locked, driveshaft spins freely. When I engage the transfer case 4 low/hi the driveshaft locks but the axle probably isn't locked.

 

[steve6x6x6]

Well, broken axle or busted spyder gears, if the locking hubs are right.

 

[Mercunimog404]

Uummmm when you lock the hubs, the driveshaft will spin. That's normal.

 

[SRB1976]

Uummmm when you lock the hubs, the driveshaft will spin. That's normal.

When the trucks moving the drive shaft should spin with the hubs locked. Mine does not.

 

[Mercunimog404]

When the trucks moving the drive shaft should spin with the hubs locked. Mine does not.

Your original post said the opposite.

 

[SRB1976]

Your original post said the opposite.

I meant when the truck was stationary all four wheels on the ground. Sorry should have explained it better.

 

[Speddmon]

As odd as it sounds, it is possible that with the truck stationary the splines on the axle and the splines of the hub are not lined up. Depending on how many splines the axle shaft of the 1009 has the axle might have to turn quite a bit to align everything and allow the collar to engage the axle.

Jack up the front end, put the transfer in 4hi and then lock the hubs. Then slowly rotate the wheel and see if the wheel locks together. If not, pulling the hub for investigation is a very simple thing to do.

 

[SRB1976]

Update: I think I found the problem. I pulled the caps off to take a look and everything looks fine


Upon inspection of the caps. Hmmm something doesn't look right.

Compared to the old MM cap.

And a Warn standard cap.

Looks like Warn might have forgot some parts for the cap? Looks like tomorrow I will have to go back to CARQUEST and see if they will exchange the caps.

 

[Recovry4x4]

Yeah, missing parts can do that. What failed in the original hubs to warrant replacement?

 

[SRB1976]

Yeah, missing parts can do that. What failed in the original hubs to warrant replacement?

I had the wheel bearings serviced so I figure why not install new hubs. I am pretty sure the old ones were the originals.

 

[SRB1976]

Update #2

I went to CARQUEST today and they exchanged the caps with no problem, so now I have working four wheel drive.

 

[Another Ahab]

Update #2

I went to CARQUEST today and they exchanged the caps with no problem, so now I have working four wheel drive.

Nothing wrong about a happy ending. And glad you worked out the problem. That's always a good thing.

 

[doghead]

You might want to find a new mechanic.

He should have noticed those new hubs were not assembled and functioning.

I'd save your old hubs too, they probably are just fine to reuse.