"Locked" Front diff
#1
Registered User
Thread Starter
Join Date: Jul 2005
Location: Calgary, AB, Can
Posts: 687
Likes: 0
Received 0 Likes
on
0 Posts
"Locked" Front diff
I've discovered an interesting predicament with my front diff.
I opened up the front diff to re-seat on teh the stud axle shafts. And figured while it was apart I may as well ply with it to see how it works, including the ADD.
I opened it up, and put the ADD in the ...makes both shafts spin...position. I was a bit shocked to find that both axle shats spun the same direction, both when I turned a single axle shaft, and when I turned the yoke.
Is this normal? I only ask because all the experiance I've had with diffs is that under no load from the engine, and both tires off the ground, spinning one tire results in the opposite tire turning the opposite direction. So what's the deal? Nothing is torn apart, or damaged, and all the pieces are there. Speculations?
I opened up the front diff to re-seat on teh the stud axle shafts. And figured while it was apart I may as well ply with it to see how it works, including the ADD.
I opened it up, and put the ADD in the ...makes both shafts spin...position. I was a bit shocked to find that both axle shats spun the same direction, both when I turned a single axle shaft, and when I turned the yoke.
Is this normal? I only ask because all the experiance I've had with diffs is that under no load from the engine, and both tires off the ground, spinning one tire results in the opposite tire turning the opposite direction. So what's the deal? Nothing is torn apart, or damaged, and all the pieces are there. Speculations?
#2
Contributing Member
I know exactly what happened!
If you shift in 4wd, and then engage the ADD, the wheels will spin in opposite directions when you spin one of them; however the way you did it was in 2wd, so the drivesahft didn't have anything to stop it from spinning. If the driveshaft is allowed to spin, your wheels will spin as if they are being driven because the driveshaft is spinning as well. This is the same for when you manually spin he driveshaft, or if you're driving in 4wd.
If you shift in 4wd, and then engage the ADD, the wheels will spin in opposite directions when you spin one of them; however the way you did it was in 2wd, so the drivesahft didn't have anything to stop it from spinning. If the driveshaft is allowed to spin, your wheels will spin as if they are being driven because the driveshaft is spinning as well. This is the same for when you manually spin he driveshaft, or if you're driving in 4wd.
Last edited by mastacox; 10-01-2006 at 03:49 PM.
#3
Registered User
Join Date: Dec 2002
Location: Idaho
Posts: 4,655
Likes: 0
Received 0 Likes
on
0 Posts
I know exactly what happened!
If you shift in 4wd, and then engage the ADD, the wheels will spin in opposite directions when you spin one of them; however the way you did it was in 2wd, so the drivesahft didn't have anything to stop it from spinning. If the driveshaft is allowed to spin, your wheels will spin as if they are being driven because the driveshaft is spinning as well. This is the same for when you manually spin he driveshaft, or if you're driving in 4wd.
If you shift in 4wd, and then engage the ADD, the wheels will spin in opposite directions when you spin one of them; however the way you did it was in 2wd, so the drivesahft didn't have anything to stop it from spinning. If the driveshaft is allowed to spin, your wheels will spin as if they are being driven because the driveshaft is spinning as well. This is the same for when you manually spin he driveshaft, or if you're driving in 4wd.
#4
Registered User
Join Date: Feb 2006
Location: Barrie, Ontario CANADA
Posts: 1,730
Likes: 0
Received 0 Likes
on
0 Posts
Ya but like what Mastacox says is that there is no resistance to the carrier to force the spiders to turn therfor the carrier turns and both wheels spin the same. If you hold the pinion (driveshaft) you cause resistance to the carrier and the spiders spin in opposite directions.
Unless I am missing something..........
Unless I am missing something..........
#5
Contributing Member
Yes, but I think thats is what he is getting at, its not happening. His is acting like its locked. His tires were off the ground. So when he spins the axleshaft the other one should go in the opposite direction sice the CV shaft is easier to spin than the driveshaft. When he spins the driveshaft (yolk I am assuming) one shoud spin one way, the one the other... but his werent. Has nothing to do with 2/4wd.... Somthing is sticking.
Case closed
#6
Registered User
Join Date: Dec 2002
Location: Idaho
Posts: 4,655
Likes: 0
Received 0 Likes
on
0 Posts
I agree, but whats throwing me off is my front shaft doesnt spin if i do that, even in 2wd, it just spins the other tire the opposite direction... maybe thats just my rig...
Thread
Thread Starter
Forum
Replies
Last Post
FS[GreatLakes]: Wanted: 4.88 front diff, rear 8'' 4.88
jaretstuff
Axles - Suspensions - Tires - Wheels
1
08-04-2015 02:08 PM
yourrealdad
95.5-2004 Tacomas & 96-2002 4Runners
3
07-29-2015 11:08 AM
Steven.m.paulk
86-95 Trucks & 4Runners (Build-Up Section)
3
07-24-2015 01:44 PM
scottyg486
Offroad Tech
3
07-19-2015 05:34 PM
TokyoD23
95.5-2004 Tacomas & 96-2002 4Runners
4
07-12-2015 06:01 AM