rear locker?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mothertrucker424 · 12-27-2008, 07:45 PM

i opened mine today and when i spin wheel forward then reverse it sorta locks and it snaps/pops?? why?

LONGHAIR · 12-28-2008, 10:59 AM

Pictures?

mothertrucker424 · 12-28-2008, 08:23 PM

Quote:

Originally Posted by LONGHAIR

Pictures?

i took a couple looking for camera cable should have some tonight i hope

mothertrucker424 · 12-28-2008, 09:24 PM

should i pull another eaton from junk yard for a spare parts axle? due to fact of them being rareish

LONGHAIR · 12-28-2008, 09:32 PM

Who said that they were rare?
They were the standard axle in these trucks, the 12-bolt was an optional piece.
AFAIK the standard for Chevy: HO-52 and coils spring suspension, with options available. The standard for GMC was the opposite: 12-bolt and leaf spring suspension, options on them too. Either truck could be had either way, but w/o specified options, you get the standard equipment.

mothertrucker424 · 12-28-2008, 10:14 PM

Quote:

Originally Posted by LONGHAIR

Who said that they were rare?
.

i use rare "loosely" i meant due to parts avalibility

1969 GMC · 12-28-2008, 11:36 PM

Quote:

Originally Posted by LONGHAIR

Who said that they were rare?
They were the standard axle in these trucks, the 12-bolt was an optional piece.
AFAIK the standard for Chevy: HO-52 and coils spring suspension, with options available. The standard for GMC was the opposite: 12-bolt and leaf spring suspension, options on them too. Either truck could be had either way, but w/o specified options, you get the standard equipment.

when you say 12 bolt you mean dana 60, right?

justcuz · 12-31-2008, 01:55 AM

To recap I oversimplified my explination of the gov-loc. Gov-loc is not what Eaton calls them. They call it what I called it "Eaton automatic locking differential" . Gov-loc is a consumer nickname that kinda stuck. Like I said a little google and you-tube searching will clarify this. The ramp up on the governor mechanism does tighten on the frictions and discs enough to spin both wheels. The cam locks in place to keep the frictions and discs tight enough to lock the wheels together until it goes over 20 mph. Some guys actually grind weight off the flyweight to make it lighter and stay locked up at higher speeds.
The no-spin Detroit locker was available in the corporate 14 bolt full floater.
I've got one in a 1973 3/4 ton 2wd Suburban. It is factory original, I know, since I am the second owner of this truck. The first owner was a co-worker who bought it new to tow a horse trailer. When he was going to buy a new one, the trade in was insulting, so I bought it from him for my wife to haul our kids and stuff around.
That was my first Suburban, I've owned 3 others since then and still have 3 of the 4 I have owned. The one I don't have, died an ugly death when some jackass in a flatbed pulled out in front of my wife. No habla, no insurance, no more flatbed. I had the cops impound it, they would not release it without registration and proof of insurance, so it got leined by the tow yard and scrapped. Julio had just bought the truck from somebody and had not registered or insured it

But he was driving it

justcuz · 01-03-2009, 12:54 PM

Quote:

Originally Posted by mothertrucker424

i opened mine today and when i spin wheel forward then reverse it sorta locks and it snaps/pops?? why?

If the snapping and popping you describe, could it also be a clicking type noise? You may have a no-spin aka Detroit locker. The noise is the engagement teeth racheting past each other. Supposedly the locker out of a 14 bolt will interchange with the ones in the Eaton. The difference is the inner axle splines. The Eaton has less splines (17 or 19 I believe) and the 14 bolt has 30 if I remember correctly.

mothertrucker424 · 03-08-2009, 08:29 PM

1969 GMC · 03-08-2009, 09:44 PM

Yessir, No-Spin (Detroit). You can tell by looking through the holes in the carrier...if you just saw gear teeth, it would be an open diff (you'd be seeing the spider gears). But there is just smooth metal, which means locker. Congrats

mothertrucker424 · 03-09-2009, 08:51 PM

i pulled it apart and its clean inside and very little slop/play i ordered my disc brakes and now its time to sand blast housing and paint and install

Chris H · 03-10-2009, 12:21 AM

I had a NOS locker with the factory literature, here goes:

mothertrucker424 · 03-10-2009, 08:20 PM

very helpful info

12-27-2008, 07:45 PM	#1
mothertrucker424 Registered User Join Date: Sep 2006 Location: st pete Posts: 404	Re: rear locker?? i opened mine today and when i spin wheel forward then reverse it sorta locks and it snaps/pops?? why? __________________ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 1972 K10 4"lift 33"tires (soon to be bigger and better) 2000 silverado 1500 2wd 2"coil spacers3" BL 285/75/16's

12-28-2008, 10:59 AM	#2
LONGHAIR just can't cover up my redneck Join Date: May 2004 Location: Columbus OH Posts: 11,414	Re: rear locker?? Pictures?

12-28-2008, 09:24 PM	#4
mothertrucker424 Registered User Join Date: Sep 2006 Location: st pete Posts: 404	Re: rear locker?? should i pull another eaton from junk yard for a spare parts axle? due to fact of them being rareish __________________ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 1972 K10 4"lift 33"tires (soon to be bigger and better) 2000 silverado 1500 2wd 2"coil spacers3" BL 285/75/16's

12-28-2008, 09:32 PM	#5
LONGHAIR just can't cover up my redneck Join Date: May 2004 Location: Columbus OH Posts: 11,414	Re: rear locker?? Who said that they were rare? They were the standard axle in these trucks, the 12-bolt was an optional piece. AFAIK the standard for Chevy: HO-52 and coils spring suspension, with options available. The standard for GMC was the opposite: 12-bolt and leaf spring suspension, options on them too. Either truck could be had either way, but w/o specified options, you get the standard equipment.

12-31-2008, 01:55 AM	#8
justcuz Registered User Join Date: May 2008 Location: Alta Loma, Ca. Posts: 930	Re: rear locker?? To recap I oversimplified my explination of the gov-loc. Gov-loc is not what Eaton calls them. They call it what I called it "Eaton automatic locking differential" . Gov-loc is a consumer nickname that kinda stuck. Like I said a little google and you-tube searching will clarify this. The ramp up on the governor mechanism does tighten on the frictions and discs enough to spin both wheels. The cam locks in place to keep the frictions and discs tight enough to lock the wheels together until it goes over 20 mph. Some guys actually grind weight off the flyweight to make it lighter and stay locked up at higher speeds. The no-spin Detroit locker was available in the corporate 14 bolt full floater. I've got one in a 1973 3/4 ton 2wd Suburban. It is factory original, I know, since I am the second owner of this truck. The first owner was a co-worker who bought it new to tow a horse trailer. When he was going to buy a new one, the trade in was insulting, so I bought it from him for my wife to haul our kids and stuff around. That was my first Suburban, I've owned 3 others since then and still have 3 of the 4 I have owned. The one I don't have, died an ugly death when some jackass in a flatbed pulled out in front of my wife. No habla, no insurance, no more flatbed. I had the cops impound it, they would not release it without registration and proof of insurance, so it got leined by the tow yard and scrapped. Julio had just bought the truck from somebody and had not registered or insured it But he was driving it

03-08-2009, 08:29 PM	#10
mothertrucker424 Registered User Join Date: Sep 2006 Location: st pete Posts: 404	Re: rear locker?? __________________ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 1972 K10 4"lift 33"tires (soon to be bigger and better) 2000 silverado 1500 2wd 2"coil spacers3" BL 285/75/16's

03-08-2009, 09:44 PM	#11
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	Re: rear locker?? Yessir, No-Spin (Detroit). You can tell by looking through the holes in the carrier...if you just saw gear teeth, it would be an open diff (you'd be seeing the spider gears). But there is just smooth metal, which means locker. Congrats __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

03-09-2009, 08:51 PM	#12
mothertrucker424 Registered User Join Date: Sep 2006 Location: st pete Posts: 404	Re: rear locker?? i pulled it apart and its clean inside and very little slop/play i ordered my disc brakes and now its time to sand blast housing and paint and install __________________ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 1972 K10 4"lift 33"tires (soon to be bigger and better) 2000 silverado 1500 2wd 2"coil spacers3" BL 285/75/16's

03-10-2009, 12:21 AM	#13
Chris H 72 C30 Trailer Queen Join Date: Dec 1999 Location: SE MN, USA Posts: 794	Re: rear locker?? I had a NOS locker with the factory literature, here goes: Attached Images __________________ Chris H 72 C30 133" 72 C30 157" flat-dump 69 C10 short fleet 71 ElCamino 2000 K2500 crewcab shortbed (sold, sorry old friend) 2005 GMC 2500HD shortcrew Duramax 2006 K1500 RCSB and a couple other projects/parts

03-10-2009, 08:20 PM	#14
mothertrucker424 Registered User Join Date: Sep 2006 Location: st pete Posts: 404	Re: rear locker?? very helpful info __________________ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 1972 K10 4"lift 33"tires (soon to be bigger and better) 2000 silverado 1500 2wd 2"coil spacers3" BL 285/75/16's



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.