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fcfred 03-13-2002, 10:40 AM so my brother bought a 94/95 grand cherokee and is getting a hum from the rear end. he said there is supposedly a reocurring problem with the rear ends during these years. anyone know of any truth to this? what rear end is in that thing? Jakesteramalamajama 03-13-2002, 11:20 AM Is that one of those that had the weird D44 with the aluminum center section? I've heard horror stories about those axles. YJ4LIFE 03-13-2002, 11:49 AM start looking for a 8.8" to replace it if it blows ;) fcfred 03-13-2002, 12:09 PM where do I get a 8.8? Jakesteramalamajama 03-13-2002, 12:35 PM Originally posted by fcfred where do I get a 8.8? 95+ Exploder Jake jp junkie 03-13-2002, 01:46 PM If it has the aluminum 44 have a qualified shop check the ring and pinion set up. Usually they are set up wrong. (from Jeep):rolleyes: dorfs 03-13-2002, 05:07 PM Chrysler had a lot of problems with the aluminum housing 44's. The problem was in manufacturing. Dana would set everything up perfectly, then press in the steel axle housing. This would crush the pre-load on the carrier bearings. Once those bearings would shell, metal would ruin the rest. If you are lucky enough to catch one of these before the carrier bearings shell out. Just replace the carrier bearings and remove .008 inch shims on both sides. This should bring the carrier turning torque back to the 25-35 inch lb. spec. I have alse seen this problem with the steel Dana 35's under those years, and even on the newer WJ's. I have never seen a 44 go out after being rubuilt properly. The blame is not in the axle, but the manufacturing. Oxjockey 03-14-2002, 04:36 AM Originally posted by dorfs This should bring the carrier turning torque back to the 25-35 inch lb. spec. Is this an effective way of measuring carrier bearing preload? Is this in lb from the pinion with the carrier in place? actionx 03-14-2002, 07:49 AM 94 or 95.. would be a 35c. fcfred 03-14-2002, 10:02 AM ok, it turns out he has a 96 with the straight 6 and an automatic The Rockslut 03-14-2002, 11:22 AM Originally posted by fcfred ok, it turns out he has a 96 with the straight 6 and an automatic Should still be a 35c in the 6cyl Mostly the V8's got the nasty aluminum 44 Only part that sucks about putting the 8.8 in the 96 ZJ is that it is coil spring so you will have to swap the brackets or get new ones. fcfred 03-14-2002, 01:09 PM sweet the problem here is that I'm in oregon and my brother is in Pennsylvania, so I have no idea what he's got. cool more info dorfs 03-14-2002, 08:05 PM Oxjocky, Chrysler uses the ttr method, or total torque to rotate. You set the pinion preload up to their spec. ie. about 30 in/lbs. (pinion torque to rotate) Then when setting up the carrier preload, you take your carrier spec. for preload, devide it by your ratio, and add it to your pinion spec. for your total torque to rotate. Timkin wants about 30 in/lbs for a carrier torque to rotate spec. on new bearings. They also recommend a pinion preload torque to rotate spec. of about 30 in/lbs. If you had a 4.10 gear ratio, your total torque to rotate should be about 30 in/lbs + (4.10 x 30 in/lbs.) = about 37 in/lbs. Oxjockey 03-15-2002, 02:54 AM That's the first time anyone's ever talked about quantifying carrier bearing preload - I'll have the try that next time, thanks! Bryan | |