G80 "normal operation"?
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arlon
Topic author - I finally get the smurf thing
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G80 "normal operation"?
My van has the G80 locker and I noticed that the rear wheels seem to be locked all the time. I did some messing with tires this weekend and when either wheel is lifted off the ground it's locked. Is that the way it's supposed to be? Makes it handy for breaking loose lug nuts with a wheel off the ground.
2004 AWD Astro 2" lift, overnight-able
2003 Dodge/Cummins Quad cab
2006 Nissan X-terra MT
1985 LTD LX 5.0 HO
Plus wife's and kid's cars to take care of...
2003 Dodge/Cummins Quad cab
2006 Nissan X-terra MT
1985 LTD LX 5.0 HO
Plus wife's and kid's cars to take care of...
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astrozam
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Re: G80 "normal operation"?
If you have both rear wheels in the air and you spin one ( lets say clockwise ) does the other tire move in the same direction ( from your viewpoint ) or opposite?
Re: G80 "normal operation"?
If you had one wheel in the air only and the van in park the wheel will not move.
1999 Safari Touring edition.
trailer tow pack with a 3:73 posi
Bucket bench seats, Rear heat, Rear Airconditioning.
teal green
300 000 kms
AirRide air bags in the rear to fix soft stock suspension.
Onboard aircompressor to make it all work nice.
trailer tow pack with a 3:73 posi
Bucket bench seats, Rear heat, Rear Airconditioning.
teal green
300 000 kms
AirRide air bags in the rear to fix soft stock suspension.
Onboard aircompressor to make it all work nice.
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LiftedAWDAstro
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Re: G80 "normal operation"?
Kidhauler is right. Whether an open or posi rear, having 1 tire in the air and the transmission in park will not allow the free tire to turn.
To go along with astrozam, if you have both tires in the air and spin one CW, the other will go CCW whether you have an open diff or the G80 posi. The reason for this is the Gov-Loc posi only actuates under torque. Spinning by hand most likely will not produce enough torque to lock it up.
To go along with astrozam, if you have both tires in the air and spin one CW, the other will go CCW whether you have an open diff or the G80 posi. The reason for this is the Gov-Loc posi only actuates under torque. Spinning by hand most likely will not produce enough torque to lock it up.
Current rides:
2013 Toyota Tundra DC 4x4
2008 Dodge Nitro 4x4
2005 Nissan Sentra 1.8S Special Edition
Mileage spreadsheet
Vans owned:
1986 Safari 2.5L 4 speed manual - scrapped
1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
1998 Astro 4x4 D44, D60, NP231, full hydraulic system with 9k# Milemarker winch and snow plow - sold to Lockdoc
2003 Astro AWD all stock - traded for a 3/4 ton truck
2005 AWD, 4.10's - sold to skippy
2013 Toyota Tundra DC 4x4
2008 Dodge Nitro 4x4
2005 Nissan Sentra 1.8S Special Edition
Mileage spreadsheet
Vans owned:
1986 Safari 2.5L 4 speed manual - scrapped
1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
1998 Astro 4x4 D44, D60, NP231, full hydraulic system with 9k# Milemarker winch and snow plow - sold to Lockdoc
2003 Astro AWD all stock - traded for a 3/4 ton truck
2005 AWD, 4.10's - sold to skippy
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MountainManJoe
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Re: G80 "normal operation"?
The G80 is speed biased, not torque biased. It should lock when there is approx 100 RPM difference between two wheels.
I was able to test my G80 by lifting all four wheels off the ground. I carefully held one wheel stationary with my hands while a helper operated the gas pedal.
I was able to test my G80 by lifting all four wheels off the ground. I carefully held one wheel stationary with my hands while a helper operated the gas pedal.
Last edited by MountainManJoe on Thu Apr 19, 2012 7:43 am, edited 1 time in total.
Re: G80 "normal operation"?
The other way to test is lif one tire off the ground and block the axle if the truck drives off the block then the posi works.
1999 Safari Touring edition.
trailer tow pack with a 3:73 posi
Bucket bench seats, Rear heat, Rear Airconditioning.
teal green
300 000 kms
AirRide air bags in the rear to fix soft stock suspension.
Onboard aircompressor to make it all work nice.
trailer tow pack with a 3:73 posi
Bucket bench seats, Rear heat, Rear Airconditioning.
teal green
300 000 kms
AirRide air bags in the rear to fix soft stock suspension.
Onboard aircompressor to make it all work nice.
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MountainManJoe
- I have my van tatooed on my cheeks
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Re: G80 "normal operation"?
That won't work with his AWD because the front wheels will pull it off the block.
Re: G80 "normal operation"?
Ya know,service with a fluid change wouldn't be a bad thing.So a visual with the rear cover off sure would confirm what he has.
1979 Malibu drag race only car
1999 Sonoma 4.3 5 speed-Rufus
1989 Astro-Ole Yellar cancelled-still selling off parts
1985 Astro-shop van R.I.P. my friend
1994 Astro LT RWD W4.3 rod knock RIP
1982 Winnebago single rear wheel-Chevy 350 Scraped 1/28/13-broken dreams......
Rochester,NY
1999 Sonoma 4.3 5 speed-Rufus
1989 Astro-Ole Yellar cancelled-still selling off parts
1985 Astro-shop van R.I.P. my friend
1994 Astro LT RWD W4.3 rod knock RIP
1982 Winnebago single rear wheel-Chevy 350 Scraped 1/28/13-broken dreams......
Rochester,NY
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arlon
Topic author - I finally get the smurf thing
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- Joined: Wed Dec 28, 2011 8:56 am
- Location: Midland Texas
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Re: G80 "normal operation"?
I know the G80 is working, I just thought maybe it was working too well (like stuck in locked mode). Fluid change is in the near future so I'll be able to see what's really heppening in there then. Thanks for the comments!
2004 AWD Astro 2" lift, overnight-able
2003 Dodge/Cummins Quad cab
2006 Nissan X-terra MT
1985 LTD LX 5.0 HO
Plus wife's and kid's cars to take care of...
2003 Dodge/Cummins Quad cab
2006 Nissan X-terra MT
1985 LTD LX 5.0 HO
Plus wife's and kid's cars to take care of...
-
MountainManJoe
- I have my van tatooed on my cheeks
- Posts: 3101
- Joined: Fri Aug 08, 2008 12:55 pm
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Re: G80 "normal operation"?
If the rear axle was locked all the time, you would hear some tire chirping in tight turns.