Rt-RWD?
superhatch
Moderator
I just picked up a manual RT wagon yesterday and didn't really get to test out the 4WD until today as there was no snow anywhere to test it out... It's 100% rwd only and I have no idea why.
The front axles are both in place.
Any ideas?
I'll be taking it apart next weekend but I didn't know it was even possible unless intentional (ala Jaker).
The front axles are both in place.
Any ideas?
I'll be taking it apart next weekend but I didn't know it was even possible unless intentional (ala Jaker).
Comments
So with just one axle popped out you saw this issue? Hmmm...I could see that. This car is in rough shape.
The clutch seemed ok on the drive home. Consistent engagement, no slip I could feel.
RWD wagon is kinda fun though...wondering if I should actually fix it. lol
The first three photos I found on the internet and the last one is of the broken differential bevel gears of my transmission.
You can see from these three photos how the power is channeled to the driveshaft and to the rear wheels.
Looks like you broke the main ring gear on the diff and not the PTO ring gear for the rear drive. Clutch dump? How did you manage that?
The power is fed to the rear by a second ring gear bolted to the front diff that drives a bevel gear set to turn the output 90 degrees and send torque down the prop shaft to the rear. So you could pull the front half shafts out and still send power to the rear but the viscous coupler in the prop shaft won't be happy about it.
The transmission works a lot like a 4x4 transfer case that is locked into 4x4 doing a 50/50 power split. Then the VC in the prop shaft does the slipping to allow speed differentials between the front and rear wheels and avoid binding.
Nope, the PTO for the rear is a second ring gear bolted to the front diff. And if you removed the front diff there would be nothing to retain the axle stubs. The axle clips interface with the bevel gears in the front diff.
Yes with an open front diff and 1 front axle missing all the drive power for the front diff would go out that side with the missing axle. This would be really hard on the front diff.
And because the front diff is part of the PTO to the rear the rear still gets driven but with some loss through slipping of the VC in the prop shaft. With a burned out VC and a missing front half shaft the car probably won't move at all.
I just learned to use flicker last night and I noticed this error after I post them.
The previous owner made the mess in the transmission and we can only guess but it was something catastrophic.
My old transmission has both differential ring gears with broken teeth, counter-shaft gear that engages to differential ring gear was damaged , counter-shaft needle bearing was missing one needle ( roller) and a few other things.
The magnet looked like a scoop of a steel Ice cream.
I was fortunate to locate a good transmission and It's worked great since last fall and It's very quiet .
Thanks for your info Ryan
I just learned to use flicker last night and I noticed this error after I posted them.
The previous owner made the mess in the transmission and we can only guess how but it was something catastrophic.
My old transmission has both differential ring gears with broken teeth, counter-shaft gear that engages to differential ring gear was damaged , counter-shaft needle bearing was missing one needle ( roller) and a few other things.
The magnet looked like a scoop of a steel Ice cream.
I was fortunate to locate a good transmission and It's worked great since the last fall and It's very quiet .
Thanks for your info Ryan
Ahh, that makes sense now. Probably first place I'll look.
Sort of. You would still have the VC on the prop shaft allowing slip. You could go to a solid prop shaft and then yes it would be RWD.
Cut the inner boot and pull the axle stub off. Then poke that into the transmission.
This will kill your VC.
Axles seemed ok, seated correctly no spline damage on the axles or the diff. And with the trans disconnected when you spin the input shaft both the front diff and the rear output shaft both spin as expected.
I still have no idea what the issue was/is. I'm going to crack the case tomorrow and have a look and if nothing obvious jumps out at me then I'll just flush it with new synthetic fluid and give it a go.