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the picture is of a bushing (i believe that's what it's called) attached to the rear axle. i believe the bushing is for the rear sway bar.
the pic just shows the driver's side, but both of mine appear to be cracked, or perhaps that's just how it's supposed to look? can anyone enlighten me here - should i replace them?
i've got a mild creak/squeak in the rear end going over bumps and i'm trying to figure out why.
If you're unsure of where the squeak is coming from, or you know that bushing is where it is coming from, just remove it and lube it up with a little white lithium grease between the bushing and sway-bar.
thanks for the replies guys. yeah, i'm really not sure where the sound is coming from, but i'm guessing it may be the shocks. i assume they're stock, and with 50k on the truck they're prob about ready to go. i was just worried cause the bushings looked odd to me - but i guess they're ok.
yeah i believe i've heard the balljoint squeak with my old expy (passed away, sad to say) this noise i'm hearing now is less constant (just over bumps/dips) quieter (can only faintly hear it when the radio is off), lower (more of a creak than a squeak), and really does seem to be coming from the rear.
It should not take long to lube the bushing by removing the retainer cap, pulling the bushing apart at the spit you have shown and spaying a liberal amount of lithium grease inside. I did so on the front sway bar bushings of an Explorer I owned and it made them quiet again. They remained that way for more than a year. I have since sold the vehicle but was quite pleased with the results on the bushings since it only took 15 minutes or so.
the bushing is fine. but take care when you lube it. make sure to use a grease which does not break down rubber. i simply figured while i had them out i would replace them with poly. www.summitracing.com has them. i then used moly based grease.
I went with Monroe Sensatracs since I got a really good deal on them through my local Napa. I also have those same shocks/struts in my Mustang. They handle nice, ride nice, and are reasonably priced.