Front wheel hub nut tool

[Ralph the german]

Whoa hats off to you for making your own tools. I am amazed at what mill machine and knowledge can do. I envy some guy's on here that can do this type work.

My profession is CNC turner (do you call it so in english) with over 30 years knowledge, I made much more special parts on this machines, drive also russian Dnepr sidebikes and changed the engines to BMW or 4 cyl. Lloyd, or made a air compressor instead of the air conditioner in the K5...and so on.

 

[Blue85]

have a look, it is machined for an 27mm wrench. A ring is not necessary to hold the tool in place, there is not much torque on the nut.

The outer lock nut is normally torqued to like 150 lb-ft (maybe 200Nm). It's possibly the highest torque spec on a Chevy truck. Are we talking about 2 different things?

 

[Ralph the german]

The outer lock nut is normally torqued to like 150 lb-ft (maybe 200Nm). It's possibly the highest torque spec on a Chevy truck. Are we talking about 2 different things?

if you torque to 200Nm, I think the bearings say goodbye. There is the adjusting nut and the outer lock nut and between the locking washer. Chiltons talked about 65 lb-ft.

 

[Blue85]

I don't have a service manual handy, but it's been discussed here several times. The inner nut sets bearing preload and the outer is a jam nut to hold the inner one in place. High torque on the outer does not put added stress on the bearings. There is an older design with a tab to bend over instead of the pin and hole design, but I think it only came on small bearing Dana 44.

http://coloradok5.com/forums/showthread.php?p=2744453#post2744453

http://coloradok5.com/forums/showthread.php?t=92686

 

[Fordum]

I don't think you are talking about two different things, just the same thing two different ways.
Ralph, the inner nut sets the bearing load like he said, and like you said, if you torque it to 200, the bearing would barely make it out the driveway.
However the outer nut only jams the inner nut, and would not change the bearing load unless you torqued it so hard you stripped out the inner nut thread.

Having said that, I think there are more than one torque rating for that outer nut. If you have the washer with the pin and holes, the inner nut cannot rotate without sheering the pin, so all the outer nut has to do is hold the washer tight against the inner nut.
If you do not have that, and the outer nut is a true jam nut, then I suspect the torque values are much higher.
No idea which you have, all mine have been versions of the Dana 44 which has the washer and pin, and I use the 65 number.

Actually, I usually do the 'tighten until it feels right' method on the outer nut.