wheel bearing lock nuts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

prg machine · 02-06-2009, 08:24 PM

I just picked up a set of wheel bearing lock nuts for the front spindles on my k-20. I don't have a thrust washer in new set or in the can that I dissasembled with all of the old parts. The one used to set against the outer bearing cone and then the nut goes against that. Since the nuts are hardened, are they the thrust surface and there is not a washer???

The inner nut has a small pin for the lock ring to set over and they have 4 slots on the outside for a wrench. then there is an outer lock nut.
I assume the inner nut is also the thrust surface for the bearing since it is hardened?

Anyone know for sure??

prg machine · 02-06-2009, 10:03 PM

any 4x mechanics ran into this question?

I do truly believe there is no seperate washer and that the nut draws up against the bearing itself. The Jeeps I have worked on through the years use a hardened thrust washer up against the bearing and soft hex nuts. The new nuts are rather tight as well. I filed the roots of the threads to help and the new nuts now fit tight but not as extreme as at first.

While we're on the subject, how many different methods of bearing load setting can we come up with??
I usualy turn em up to tight and then back off to the very first hole in the lock ring.

OLDCHEV4X4 · 02-06-2009, 10:58 PM

No washer in there.
The wheel bearing should have .000 to .005 end play.
Or i torque it to 35ftlb while spinning the wheel. Then back off 1/4 turn. Then tighten till the in and out play just goes away.

prg machine · 02-07-2009, 01:37 AM

thanks for confirming that there is no inside thrust washer. I figured as much since all of the parts were thrown in one can when I took it apart...............but, in my experiences , sometimes there seems to be a way that parts grow there own legs and wander off!!

OldCreek · 02-07-2009, 02:29 PM

There was no thrust washer on my Dana 60 only the inner nut, lock ring, outer nut.

02-06-2009, 08:24 PM	#1
prg machine Registered User Join Date: Jun 2007 Location: oregon Posts: 1,069	wheel bearing lock nuts I just picked up a set of wheel bearing lock nuts for the front spindles on my k-20. I don't have a thrust washer in new set or in the can that I dissasembled with all of the old parts. The one used to set against the outer bearing cone and then the nut goes against that. Since the nuts are hardened, are they the thrust surface and there is not a washer??? The inner nut has a small pin for the lock ring to set over and they have 4 slots on the outside for a wrench. then there is an outer lock nut. I assume the inner nut is also the thrust surface for the bearing since it is hardened? Anyone know for sure?? __________________ 69 K-20 cloned to a 67 with front clip and some other stuff. 383 .040 over Crane roller cam lifters and rockers ,1.6 intake ratio, Open chamber heads, 9.5-1 compression ratio, 2.02 intake valves , Edelbrock performer Air Gap manifold Carter AFB performer 750cfm, MSD ignition, SM465 NP205 4.10 gears:

02-06-2009, 10:03 PM	#2
prg machine Registered User Join Date: Jun 2007 Location: oregon Posts: 1,069	Re: wheel bearing lock nuts any 4x mechanics ran into this question? I do truly believe there is no seperate washer and that the nut draws up against the bearing itself. The Jeeps I have worked on through the years use a hardened thrust washer up against the bearing and soft hex nuts. The new nuts are rather tight as well. I filed the roots of the threads to help and the new nuts now fit tight but not as extreme as at first. While we're on the subject, how many different methods of bearing load setting can we come up with?? I usualy turn em up to tight and then back off to the very first hole in the lock ring. __________________ 69 K-20 cloned to a 67 with front clip and some other stuff. 383 .040 over Crane roller cam lifters and rockers ,1.6 intake ratio, Open chamber heads, 9.5-1 compression ratio, 2.02 intake valves , Edelbrock performer Air Gap manifold Carter AFB performer 750cfm, MSD ignition, SM465 NP205 4.10 gears:

02-06-2009, 10:58 PM	#3
OLDCHEV4X4 Registered User Join Date: Apr 2000 Location: Chester County PA, USA Posts: 1,228	Re: wheel bearing lock nuts No washer in there. The wheel bearing should have .000 to .005 end play. Or i torque it to 35ftlb while spinning the wheel. Then back off 1/4 turn. Then tighten till the in and out play just goes away. __________________ 72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania

02-07-2009, 01:37 AM	#4
prg machine Registered User Join Date: Jun 2007 Location: oregon Posts: 1,069	Re: wheel bearing lock nuts thanks for confirming that there is no inside thrust washer. I figured as much since all of the parts were thrown in one can when I took it apart...............but, in my experiences , sometimes there seems to be a way that parts grow there own legs and wander off!! __________________ 69 K-20 cloned to a 67 with front clip and some other stuff. 383 .040 over Crane roller cam lifters and rockers ,1.6 intake ratio, Open chamber heads, 9.5-1 compression ratio, 2.02 intake valves , Edelbrock performer Air Gap manifold Carter AFB performer 750cfm, MSD ignition, SM465 NP205 4.10 gears:

02-07-2009, 02:29 PM	#5
OldCreek Registered User Join Date: Jan 2007 Location: Central Coast California Posts: 1,026	Re: wheel bearing lock nuts There was no thrust washer on my Dana 60 only the inner nut, lock ring, outer nut. __________________ 1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold 1972 C10 5.3L/4L60E 12bolt 5Lug - Sold 1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!! 1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold 1984 K10 SWB 7.4L/4L80e/NP208 Corp 10/12 bolt Sold 1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70/3.73!!! (Sold) 2003 K2500HD 8.1/Allison1000/NP263

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