Originally Posted by mitmaks
My brother is driving 96 lexus es300, recently it has been making squeal coming from rear tires. I narrowed it down to ebrake lines (they're inside of rubber insulator/protective line) I would have to remove brakes and hubs to get to it (hubs need replacing anyways along with shoes)
I was thinking I could spray some lithium grease inside line to lubricate it, should that work?
The pads have "wear indicators". This is a piece of metal attached to the pad that will contact the disc when the pads are at their service limit. It keeps you from continuing to drive until the friction material is gone and the disc ruined from scoring by the steel backing of the brake pad.
If the e-brake isn't releasing, the cables could be rusted and/or frayed inside the covering causing them to hang up. If the shoes have been riding on the drums, they're toast. If bad enough this can also cook out the wheel bearing lube and boil the brake fluid so be sure to flush the brake fluid, bleed the brakes and check the bearings while you're at it.
Personally, if there's a problem w/the cables, I'd prefer to see them replaced.