Smooshed FOTY 2011
Join Date: Oct 2008
Location: Durango, Colorado
Car Year: 2005
Car Model: Lifted 2.5 XT
Transmission: 5-Speed MT
I'm reading a lot of misinformation on this thread, and find it necessary to correct it.
From what I've researched and confirmed with trust worthy Subaru techs......If there is torque bind on a 4EAT, it doesn't necessarily have anything to do with the clutch packs. The fact that the rear is getting power means that the clutch packs are working. The problem is with the transfer duty solenoid, which is responsible for pumping fluid to transfer power to the rear diff via the clutch packs. (Clutch packs are engaged/disengaged by the transfer duty solenoid). When the solenoid fails or is malfunctioning, it locks the power transfer 50/50 front/rear, and you get the bind. The transfer duty solenoid is replaceable on it's own........IF that is the only issue. There could also be blockages in the transmission, or something else could be wearing/broken to cause the transfer solenoid to fail.........but most cases, it's just the solenoid. This is also why the binding goes away when you plug in the FWD fuse, because you turn the solenoid either completely on/off (don't remember which), and it keeps the power on the front. When the solenoid fails, it fails in a 50/50 mode.
Now, by contrast, if it was the clutch pack (center diff) going out, that means hardly any power would be getting to the rear, if any power at all. There wouldn't be any binding at all with a worn out clutch pack, you just slowly loose power to the rear.
Now, this isn't just and either/or situation, nor it is absolute. But I've heard of a few people replacing the clutch pack due to binding when all they needed to replace was the transfer duty solenoid.
Hope this helps.
- 5MT - 2" LIFT JOURNAL