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A clunk and a Ting indicates wear on the driveline. Usually i"ll see this on rear ends, more specifically the spider gears. But being a LSD you usually dont see wore out spider gears like you would an open. First thing is i would check the fluid level. Low fluid will do that. Then I would pull the cover anyway since it needs a fluid change and inspect parts for wear and metal on the magnet. With both tires off the ground I like to spin one tire and hold the other to see how much wear is in axles/spidergears. If your LSD is still ok you shouldnt be able to do this, thus you can probably rule out spidergears. But Your LSD might be worn out allowing it to act like an open. With the Trans in Nuetral you can also check for ring and pinion backlash. Without looking at a book , they are usually set around .010". Check all U-Joints for play / rust around the cup seals and leaking grease. Usually if something is really worn out you can replicate the sound just about everytime by going from rev to drive with your foot on the brake.
** Sometimes on very cold mornings i'll hear this too, nothing to worry about. Its due to being cold and all the oil draining off the gears And not lubricating properly. Once you start driving it'll be fine.
Now the noise when turning sounds like the Front end. Jack up the front end with the hubs unlocked (the hubs are unlocked arnt they ?) spin the tires to make sure they dont turn the axle shafts. We just had one in the shop that the inner axle bearing (needle bearing) was so bad the axle was in a bind and didnt let the hub unlock. With both hubs unlocked and tires spinning freely should eliminate everything inside the axle housing axles and u joints.
05' F350 DRW 250,000
EGR Delete Cat Delete
Everything else stock
Last edited by DanTech_Offroad; 03-17-2011 at 06:53 AM.