Is there a proportioning valve on a '98 4x4 for the twin front calipers? I just changed the brake pads, and the top side of the pad is wearing a little quicker than the bottom. That tells me that the top piston is exerting more force. Is there a way to balance them?

 

No. What that tells me is that the caliper is bad and has a siezed piston. Both pistons in the caliper feed into a common chamber that exerts the hydraulic pressure. You apparently have one piston that's stuck. Replace the caliper.

-Joe

 

See, that's the thing. Neither piston is seized. It's doing it on both sides at the top, just slightly more than the bottom. Is this common? I mean, the pads were worn maybe an 1/8" more at the top. If there's no adjustment, oh well, the pads have to be changed eventually anyway.
I just wondered if there was an adjustment short of rebuilding, which I would have done it I had time, and plan on doing next time. Thanks for the info, Joe.