K20 10 Bolt 8 Lug Help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mvitale27 · 08-30-2014, 05:48 PM

I am trying to tear down this axle and I ran into an issue. After I removed the locking hubs there is a sleeve in the hub that doesn't seem to be removable and it is blocking the spanner nut. The axle is from a '78 K20 and has internal hubs. I attached a picture of what I am talking about. Any help?

MountainGoat1966 · 08-30-2014, 06:09 PM

Clean off the grease and I suspect you will find a snap ring to be removed.

4x4k30 · 08-30-2014, 06:13 PM

there is a snap ring rite there that needs to be taken off reach around the backside of the axleshaft and it will push back to you and you see it also there is a tab that needs to be bent up so your socket will go over it

mvitale27 · 09-01-2014, 03:58 PM

OK, I cleaned off all the grease. The pic in post #1 the outer locking nut is loose and is over this ring. On the other side, it is all tightened down properly and I think I see the snap ring but if that is it, it won't budge. Any suggestions? Thanks in advance.

Here is pic of side with outer locking ring loosened and a pic of the side where all nuts/rings are tightened down.

mvitale27 · 09-02-2014, 11:07 AM

Quote:

Originally Posted by 4x4k30

there is a snap ring rite there that needs to be taken off reach around the backside of the axleshaft and it will push back to you and you see it also there is a tab that needs to be bent up so your socket will go over it

Please take a look at this crude Paint creation. Is the red arrow the snap ring you are speaking of the remove the sleeve that the blue arrow is pointing to? If where the red arrow is is the snap ring then I can't get it to budge. Thanks!

mvitale27 · 09-02-2014, 03:22 PM

Anyone know how to get the ring that the blue arrow is pointing to out?

y5mgisi · 09-03-2014, 02:56 AM

THat should just pull out. I like to use my dental tool if i cant grab it with needle noses.

mvitale27 · 09-03-2014, 09:41 AM

Quote:

Originally Posted by y5mgisi

THat should just pull out. I like to use my dental tool if i cant grab it with needle noses.

Does the whole ring with all the teeth on it just pull out or were you referring to the smooth ring on the inside of that (somewhat resembles a bearing race)?

mvitale27 · 09-03-2014, 01:44 PM

I am having a hell of a time figuring out how to get this hub/rotor off. I understand the principal and how to remove the axle nuts but I cant get this ring out (I believe it is called a clutch ring or axle sleeve?). There also appears to be a washer or some type of snap ring that is frozen on the axle shaft itself. In pics above, blue arrow is the "ring" and red arrow is the "snap ring." Anyone have any ideas? Maybe I should ask the mods to move this thread to 4X4 or suspension sections.

motornut · 09-03-2014, 08:11 PM

the hub ring i've seen ,looks different but i'd say look in here

y5mgisi · 09-03-2014, 08:35 PM

The red arrow you have pointing the spindle. It stays in place.

The blue arrow is part of the locking hub. It should just pull out.

y5mgisi · 09-03-2014, 08:38 PM

You seem to be pointing at the hub snap ring which it appears mv has already removed. Thats #7 in the above diagram.

motornut · 09-04-2014, 09:23 AM

Quote:

Originally Posted by y5mgisi

You seem to be pointing at the hub snap ring which it appears mv has already removed. Thats #7 in the above diagram.

ok i thought the ring may be broken in there.
found this pic
I was thinking of these type snap rings,says auto hubs tho

mvitale27 · 09-04-2014, 10:59 AM

Quote:

Originally Posted by y5mgisi

The red arrow you have pointing the spindle. It stays in place.

The blue arrow is part of the locking hub. It should just pull out.

Thanks for the help everyone. I feel stupid!

So I should just be able to reach behind this geared ring (makes sense now that I know it is part of the locking hub) and pull it out?
Just want to make sure we are talking about the same thing.

y5mgisi · 09-04-2014, 03:29 PM

Correct.

mvitale27 · 09-08-2014, 11:03 AM

Finally got the damn thing out and tore down the rest of the axle. Thanks for the help everyone!

mvitale27 · 03-04-2015, 09:02 AM

Quote:

Originally Posted by y5mgisi

In the above diagram, does anybody know where I can purchase # 12? On one side, the bearing/bushing was damaged during dissassembly.

BLT gmc · 03-04-2015, 11:04 AM

Quad4x4.com is a good web site to start. Bruce

**hatzie** · 03-05-2015, 12:45 AM

This is the page for your hub from the 73-78 GM Parts Illustration manual.
The clutch is GM Part # 3937062

08-30-2014, 06:09 PM	#2
MountainGoat1966 Registered User Join Date: Jan 2010 Location: northern arizona Posts: 259	Re: K20 10 Bolt 8 Lug Help Clean off the grease and I suspect you will find a snap ring to be removed. __________________ "Off the grid and on the seven day weekend plan" "One person cannot know everything, but between all of us, there isn't much we don't know."

08-30-2014, 06:13 PM	#3
4x4k30 Registered User Join Date: Jun 2003 Location: ga Posts: 630	Re: K20 10 Bolt 8 Lug Help there is a snap ring rite there that needs to be taken off reach around the backside of the axleshaft and it will push back to you and you see it also there is a tab that needs to be bent up so your socket will go over it __________________ 4x4k30 if trouble was money i would have plenty

09-01-2014, 03:58 PM	#4
mvitale27 Registered User Join Date: Oct 2013 Location: Rhode Island Posts: 199	Re: K20 10 Bolt 8 Lug Help OK, I cleaned off all the grease. The pic in post #1 the outer locking nut is loose and is over this ring. On the other side, it is all tightened down properly and I think I see the snap ring but if that is it, it won't budge. Any suggestions? Thanks in advance. Here is pic of side with outer locking ring loosened and a pic of the side where all nuts/rings are tightened down. Attached Images __________________ 1956 Chevy 3600 Matt's 3/4T 4X4 Build

09-02-2014, 03:22 PM	#6
mvitale27 Registered User Join Date: Oct 2013 Location: Rhode Island Posts: 199	Re: K20 10 Bolt 8 Lug Help Anyone know how to get the ring that the blue arrow is pointing to out? __________________ 1956 Chevy 3600 Matt's 3/4T 4X4 Build

09-03-2014, 01:44 PM	#9
mvitale27 Registered User Join Date: Oct 2013 Location: Rhode Island Posts: 199	Re: K20 10 Bolt 8 Lug Help I am having a hell of a time figuring out how to get this hub/rotor off. I understand the principal and how to remove the axle nuts but I cant get this ring out (I believe it is called a clutch ring or axle sleeve?). There also appears to be a washer or some type of snap ring that is frozen on the axle shaft itself. In pics above, blue arrow is the "ring" and red arrow is the "snap ring." Anyone have any ideas? Maybe I should ask the mods to move this thread to 4X4 or suspension sections. __________________ 1956 Chevy 3600 Matt's 3/4T 4X4 Build

08-30-2014, 05:48 PM	#1
mvitale27 Registered User Join Date: Oct 2013 Location: Rhode Island Posts: 199	K20 10 Bolt 8 Lug Help I am trying to tear down this axle and I ran into an issue. After I removed the locking hubs there is a sleeve in the hub that doesn't seem to be removable and it is blocking the spanner nut. The axle is from a '78 K20 and has internal hubs. I attached a picture of what I am talking about. Any help? Attached Images __________________ 1956 Chevy 3600 Matt's 3/4T 4X4 Build

09-03-2014, 02:56 AM	#7
y5mgisi Second Chance Program Join Date: Jun 2006 Location: Portland, OR Posts: 2,642	Re: K20 10 Bolt 8 Lug Help THat should just pull out. I like to use my dental tool if i cant grab it with needle noses. __________________ 90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work.

09-03-2014, 08:11 PM	#10
motornut 78K & 79C Jimmys Join Date: Nov 2009 Location: Ottawa Ont CANADA Posts: 7,901	Re: K20 10 Bolt 8 Lug Help the hub ring i've seen ,looks different but i'd say look in here Attached Images __________________ John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350

09-03-2014, 08:35 PM	#11
y5mgisi Second Chance Program Join Date: Jun 2006 Location: Portland, OR Posts: 2,642	Re: K20 10 Bolt 8 Lug Help The red arrow you have pointing the spindle. It stays in place. The blue arrow is part of the locking hub. It should just pull out. __________________ 90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work.

09-03-2014, 08:38 PM	#12
y5mgisi Second Chance Program Join Date: Jun 2006 Location: Portland, OR Posts: 2,642	Re: K20 10 Bolt 8 Lug Help You seem to be pointing at the hub snap ring which it appears mv has already removed. Thats #7 in the above diagram. __________________ 90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work.

09-04-2014, 03:29 PM	#15
y5mgisi Second Chance Program Join Date: Jun 2006 Location: Portland, OR Posts: 2,642	Re: K20 10 Bolt 8 Lug Help Correct. __________________ 90 Chevy Suburban 2500 5.3 swap/th400/np241/14bltSF/10blt. 77 C20 crew cab Silverado. 396/th400. In work.

09-08-2014, 11:03 AM	#16
mvitale27 Registered User Join Date: Oct 2013 Location: Rhode Island Posts: 199	Re: K20 10 Bolt 8 Lug Help Finally got the damn thing out and tore down the rest of the axle. Thanks for the help everyone! __________________ 1956 Chevy 3600 Matt's 3/4T 4X4 Build

03-04-2015, 11:04 AM	#18
BLT gmc Registered User Join Date: Feb 2014 Location: West Iowa Posts: 1,106	Re: K20 10 Bolt 8 Lug Help Quad4x4.com is a good web site to start. Bruce

03-05-2015, 12:45 AM	#19
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: K20 10 Bolt 8 Lug Help This is the page for your hub from the 73-78 GM Parts Illustration manual. The clutch is GM Part # 3937062 __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful. Last edited by hatzie; 03-05-2015 at 03:52 PM.

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