Join Date: Apr 2000
Location: western MA. USA
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Re: grub screws
those 2 holes are just for removing the disk. you just screw in a bolt to one or both and the disk will pop off the hub.
they will have no effect on the hubs. Sounds like you need to clean and lube your hubs.
87' Zuke Spoa, 31's, 4.16 tcase, Camo,Header,2"exhuast, Cam.
Locked both ends, 8klb winch, Snorkel -Wildweasel2