need rear end help asap broke??

[melmount]

this is a non posi cause the rear wheels when spinning them they spin oppisiite one another.
other than clutches( i assume their is clutches in a non posi rear too?) what could be wrong? i can still drive it fine. a non posi wont allow both tires to spin(even though different directions) and not have the yoke spin would it?

 

[Zookie400]

NO!

a posi and open (non-posi) will be able to spin one wheel forward and the other reverse, the difference is that the posi will need extreme force to break the clutches loose (you wont be able to do it by hand) and the open will spin freely. if you have a posi rear that has smoked clutches, it will act just like an open diff.

with the truck on the ground, in park, IS IT ROLLING? if yes, HOW FAR? its normal to get a foot until the parking pawl catches and stops the driveshaft.

how would putting in on the ground change anything. spinning is spinning.

it changes everything. the driveshaft holds the carrier, not the axles. the spider gears inside the carrier hold the axles, but allow them to spin opposite directions at a 1:1 ratio. with the tires on the ground, unless you are on ice, the tires cannot spin opposite directions, so the locked driveshaft holds the carrier, and holds the spiders, and holds the axles LOCKED. in the air, the carrier/driveshaft isnt moving, the spiders are spinning one axle forward and the other reverse.

if you have the truck jacked in the air, and you CANNOT spin the tires, you have a problem, or a posi.

 

[melmount]

I just checked something else, when i jack it up and block one wheel from spinning i cant spin the other. When they are loose(nothing holding them) they spin oppisite directions. The fact they spin oppisite directions, is that whats keeping you from free rolling down hills when in park?

 

[atk]

isn`t this what i was trying to say?

 

[melmount]

zookie wont a posi spin both tires the same direction when jacked up and spinning by hand? on my muscle cars they always went the same way even if wasted, just it was simple to hold one and spin the other if shot. one leggers spun tires opposite directions?
i am not trying to argue just trying to figureout if something is wrong?

 

[melmount]

thanks atk appreciate the help. something is clunking when i tap the gas and when i hit hit the brake and the car comes to a stop i started to check the rear i was thinking it was that

 

[Zookie400]

I just checked something else, when i jack it up and block one wheel from spinning i cant spin the other. When they are loose(nothing holding them) they spin oppisite directions. The fact they spin oppisite directions, is that whats keeping you from free rolling down hills when in park?

YES! you got it!

the only way a posi rear end will spin both tires in the same direction is if the driveshaft is free to spin. in park, they will spin opposite directions IF you have the muscle to break the clutches loose. a posi rear end is EXACTLY like an open diff, but it has an additional clutch pack that creates resistance between the two axles.

 

[Zookie400]

thanks atk appreciate the help. something is clunking when i tap the gas and when i hit hit the brake and the car comes to a stop i started to check the rear i was thinking it was that

check the leaf spring bushings, and u-bolts. the leaves could be slamming forward and back if the bushings are worn (like mine! ) or the axle housing could be spinning inside the ubolts if they are loose or broken.

also check the driveshaft slip joints, hanger bearings, ujoints. unfortunaltly you have the clunk symptom that can be cause by anything.....body mounts, engine or tranny mounts, ball joints, .................

 

[atk]

check the leaf spring bushings, and u-bolts. The leaves could be slamming forward and back if the bushings are worn (like mine! :d ) or the axle housing could be spinning inside the ubolts if they are loose or broken.

Also check the driveshaft slip joints, hanger bearings, ujoints. Unfortunaltly you have the clunk symptom that can be cause by anything.....body mounts, engine or tranny mounts, ball joints, .................

ditto....x2

 

[melmount]

i checked the tranny mount today. i removed the 2 bolts thru cross member bottom and jacked it up. appeared fine.
heres whan i get the noise, dead stop lightly hitting gas, then stopping lightly using brake, when the rear end comes down after the front of truck going down rom stopping. when normal stance is concluding, rear of vehicle coming down it clunks lightly. If i hit the brakes sortof stiffer and hold the pedal down causing the truck to rock a bitno clunks. only happens when going real easy on brakes or easy accelerating. U joint would not be effected by harder on the brakes. Maybe the slip joint?? dont think itsmotor mounts, definately coming from the rear. How would i check the slip joint?