Hub Assemblies - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 13 (permalink) Old 10-12-2009, 05:03 AM Thread Starter
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Hub Assemblies

This is more of a general question but I'm posting it here because of the truck year. On the one ton trucks has anyone had a reoccuring problem with the hubs failing? I just repaired my hubs 3 months ago and one side just failed and the other side is looking like it is about to do the same thing. Any help or advice is excellent. Thanks guys.

90' 1 Ton Dodge Diesel 4x4 Stock 12v. 5-speed Getrag. Custom 6'' Alcan Springs. 35'' Toyos.

2002 Dodge 2500 Cummins Automatic Stock.
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post #2 of 13 (permalink) Old 10-13-2009, 07:06 AM
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Repaired?

New bearings? or something else?

The hubs will run 500k if kept clean and adjusted to .006 clearance.

The service life is short when knocked off and on with a chisel instead of a socket, I think mostly because the shops that use a chisel will also lay the bearings in the sand.

keydl

93 Dodge /CTD, IC, 518, club cab LE, BHAF, KDP fixed, kelderman air ride
81 Isuzu /C223na, 5spd
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post #3 of 13 (permalink) Old 10-13-2009, 05:01 PM Thread Starter
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3 Months ago I had taken the truck out wheelin and the water took care of the grease and ruined the bearings pretty good.

Yeah it got everything new springs and bearings along with the cover oring. everything else was cleaned up good. All packed together with grease.

The nuts were never taken off with a chisel I made sure there was a socket for that.

What do you mean by adjusted to .006 clearance?

90' 1 Ton Dodge Diesel 4x4 Stock 12v. 5-speed Getrag. Custom 6'' Alcan Springs. 35'' Toyos.

2002 Dodge 2500 Cummins Automatic Stock.
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post #4 of 13 (permalink) Old 10-15-2009, 03:39 AM
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With a dial indicator the movement of the hub and spindle with the locknuts set should have clearance - .003 to .015 if I remember - but the best for me has been .006. That was the measurement that was in range for all the specs that I could find at the time.

After you count the threads on a few spindles the amount to turn the nut is usually 1 or 2 tries.

Did you pack the seal with grease? For 2 wheelers a light coat, for 4 wheelers a finger full of grease at the seal surface start so it piles up into the seal lip and the space between the lips filled. Make sure that you have the correct seal for the axle dia - some are close but won't keep the water out.

The stub axle bearing inside the spindle may cause seal leaks.

keydl

93 Dodge /CTD, IC, 518, club cab LE, BHAF, KDP fixed, kelderman air ride
81 Isuzu /C223na, 5spd
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post #5 of 13 (permalink) Old 11-04-2009, 01:35 PM Thread Starter
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Which seal are you talking about for the grease? Because the only place I've seen grease is inside that whole hub assembly

90' 1 Ton Dodge Diesel 4x4 Stock 12v. 5-speed Getrag. Custom 6'' Alcan Springs. 35'' Toyos.

2002 Dodge 2500 Cummins Automatic Stock.
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post #6 of 13 (permalink) Old 11-05-2009, 02:12 AM
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There is a seal on the inside of the spindle, as well as a bearing. If they are not working the water will run in and if they get more than a little warm the grease will run out.

Vibration on turn is a sign that the bearing is not well and by that time the seal is normally gone.

Can I advocate a torque wrench for the spindle bolts?

keydl

93 Dodge /CTD, IC, 518, club cab LE, BHAF, KDP fixed, kelderman air ride
81 Isuzu /C223na, 5spd
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post #7 of 13 (permalink) Old 11-23-2009, 02:07 AM Thread Starter
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Well my locknuts had come loose and ruined the outer bearing welding the inner race to the spindle. Not a great experience while driving I might add.

New spindle and spindle bearings kit on the way should be here tomorrow. Along with the newer lock nut style, as i was told they work alot better but you need a new socket.

Any idea on a torque value for those spindle lock nuts?

On the movement of the spindle/hub Im unclear on what your saying.

90' 1 Ton Dodge Diesel 4x4 Stock 12v. 5-speed Getrag. Custom 6'' Alcan Springs. 35'' Toyos.

2002 Dodge 2500 Cummins Automatic Stock.
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post #8 of 13 (permalink) Old 11-23-2009, 04:22 AM
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When the inner nut is put on it is torqued to about 50 #ft while rotating the hub to make things move into operating position, It is then backed off and run up to 'contact' the point that preload starts. Back off 1/6 turn, add the lock washer and torque the lock nut to 50-70 #ft. Measure the clearance with a dial indicator - hub to spindle - pull out and push in not up and down.

While learning I set mine to contact - no clearance, no preload - 20 k miles looked like 100 k and had .004 clearance and no effect on the big tire problems.

keydl

93 Dodge /CTD, IC, 518, club cab LE, BHAF, KDP fixed, kelderman air ride
81 Isuzu /C223na, 5spd
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post #9 of 13 (permalink) Old 11-23-2009, 09:10 AM Thread Starter
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What I'm having a hard time grasping is rotating the hub and this clearance

Is it putting the first spindle nut on, running it down to 50# in torque, setting the lockout hub device in and turning it as if your "locking" the hubs and finding that 'contact' point and then backing the nut off and then putting the locking tab in and other spindle nut on and torquing it down.?

Thanks for the patience

90' 1 Ton Dodge Diesel 4x4 Stock 12v. 5-speed Getrag. Custom 6'' Alcan Springs. 35'' Toyos.

2002 Dodge 2500 Cummins Automatic Stock.
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post #10 of 13 (permalink) Old 11-24-2009, 06:44 AM
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I have seen 2 types of nuts - a pair with a seperating washer and a nylock with a lock key.

Nylock is easy set the dial indicator on the rotor to indicate the end of the spindle. If the rotor has slack to the hub just hold it with a nut. Then you adjust to .006. The 50 #ft torque is to seat bearings in the bore and the rotation is to cause the rollers to ride in the least space. Only after the bearing is set do you put the freewheel hub on.

Two nuts is a little different - there is slack in the threads of around .006 to .010 and that has to be added to the first nut setting so that when the lock nut is torqued the clearance is right.

Wrong clearance on a big truck can raise the temp to over 200 F from 120 F normal or worming across the tread if it is to loose.

keydl

93 Dodge /CTD, IC, 518, club cab LE, BHAF, KDP fixed, kelderman air ride
81 Isuzu /C223na, 5spd
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