CLUNKING NOISE COMING FROM REAR AXLE PASSANGER SIDE SEAL LEAKING GROOVE WORN IN AXLE COULD THAT CAUSE THE CLUNKING NOISE 01 FORD F-150

A "click" or "thump" noise can be caused by several factors, including: suspension: Loose or worn suspension components, such as control arm bushings, control arm connections, and struts, can cause rattling noises when climbing over bumps. Drivetrain: Worn or damaged drive shafts, constant velocity joints, or differential components can also cause rattling noise. break: Worn or loose brake parts such as calipers and rotors can cause a rattling noise when applying and releasing the brakes. engine: If the engine rattles, there may be a problem with the engine mounts or the timing belt. These are just some of the possible causes of knocking noise and an accurate diagnosis can only be made by a specialist after an inspection.

You may need to replace the axle, it may have a groove worn from the seal lip and this prevents it from sealing even with a new seal.

A grinding noise suggests a bearing at fault or perhaps worn pads on the brake rotor.

However, the clunking noise you mention could also point to a problem with the drive shaft or differential.

The first thing you should do is to get under the vehicle and try twisting the propshaft back and forth. If there's any movement this points towards a worn universal joint on the propshaft. A worn universal joint can cause a clunking noise - particularly when pulling away. The vibration caused by a worn universal joint can also damage bearings in the differential and also to the splined ends of the axle shaft.

You're also going to have to remove the wheel from where the noise comes from and examine the end of the axle shaft/bearing.

The link below is of images of the rear axle:

land rover discovery rear axle Google Search

Check your U-joints in the driveshaft. Also make sure the axle is properly bolted in place.

The clunking noise is a sign that the rear axle diffential gear oil needs to be changed. Put a catch pan underneath it, and remove all the bolts from the differential cover. Drain the old oil, and spray brake cleaner into the area to flush all dirt deposits from the unit. The brake cleaner evaporates and won't leave a residue.

Put a silicone sealant around the cover before remounting. Refill the unit with the gear oil weight specified in your maintenance manual, and also add a tube of limited slip differential paste (available at Autozone). Fill the differential until it begins to overflow from the fill hole.

Concerning the black gunky substance leaking out: there's a good chance that the axle seal is worn and letting the differential gear oil leak out. You should consider replacing those before refilling the differential. It will continue to leak until you do so.

Best regards,
Steve

This is caused by a leaking rear axle seal you will need to pull the left rear axle out and change the seal and check for a worn axle bearing, this requires the removal of the differential cover, pin and center block or posi spring and clutch pack (if so equipped) and spider gears and then the "C" clip that retains the axle into the gear carrier, u will need a tube of silicone to reseal the cover and a axle seal installer tool and about 2 hours of your time

thats normal, you should have a little movement the noise is the axle hitting the lock pin in the diff. hope this helps

REPLACE THE PINION FLANGE, IT MUST HAVE A GROOVE WORN IN IT

HI, this noise can be caused by worn shocks,even if the bushings look good, you can remove one of them and check if is hard to constracts ,if not they must be replaced,

The noise is caused by the axle button being worn out, this lets the axle move back and forth and clunk, this is a unique problem with C clip retained axles, it is a noise issue but will not fail and cause any more damage, in order to fix it you must have the axles pulled and the diff carrier checked for excess wear where the axle retainning C clip rides, if the carrier is ok then replace the axles.