Subaru 26300AG01A Brake Disc Front

Start by loosening the wheel lug nuts and raising the vehicle to remove, if necessary, inspect your brake discs and put them back. Stabilize the disc on top of hub flange using lug nuts after removing the wheel. If working on rear disc, release parking brakes. Take off a brake caliper without disconnecting a hose pipe for that braking system and use wire to suspend it safely. Visually check the surface of the brake rotors for scored marks or damage-deep scoring will require the rotor to be removed and refinished by a machine shop. In addition, examine both sides of a rotor and assess its runout using dial indicator. If the runout exceeds specified limits one may need machining. Even when indicator reading is within limits it is still recommended to surface discs again in order to get smooth finishing. If there's no resurfacing involved, then with circular movement rub emery cloth or sandpaper against glazed surfaces until it's gone or try remachining them. Use a micrometer to measure thickness of rotor making sure that it remains above minimum thickness usually cast or stamped into it (rotor). To have this detached, remove relevant bolts unscrewing caliper support bracket after which slide out disk from hub applying bolts where necessary.There are two types: solid one-piece (non-vented) and vented (two-piece). Inspect parking brakes shoes for rear disks.Most important step here is thoroughly cleaning all parts plus installation of disk, calipers support brackets, brake pads themselves as well as tightening required bolts.Finally install your wheels back, lower your vehicle down and tighten lug nuts.Press down pedal so that pads can touch rotor then test braking system before driving away, however if you disconnected your brakeline bleeding is desired.Notes coould be made only in case hose has been disconnected because of necessity to bleed it.

Loosen the wheel lug nuts, raise the vehicle and support it securely on jackstands. Remove the wheel and install the lug nuts to hold the disc in place against the hub flange. If the lug nuts don't contact the disc when screwed on all the way, install washer sunder them. If you're checking the rear disc release the parking brake. Remove the brake caliper, suspend the caliper out of the way with a piece of wire. Visually inspect the disc surface for score marks and other damage. To check disc run out, place a dial indicator at a point about 1/2-inch from the outer edge of the disc. Set the indicator to zero and turn the disc. The indicator reading should not exceed the specified allowable run out limit. If it does, the disc should be refinished by an automotive machine shop. The discs should be resurfaced regardless of the dial indicator reading, as this will impart a smooth finish and ensure a perfectly flat surface, eliminating any brake pedal pulsation or other undesirable symptoms related to questionable discs. Remove the caliper support bracket bolts and remove the support bracket. Slide the disc off the hub. If the disc is stuck to the hub and won't come off, thread two bolts into the holes provided and tighten them. Thoroughly clean all parts. Install the disc, caliper support bracket and brake pads. Install the wheel and lug nuts, then lower the vehicle to the ground. Tighten the lug nuts. Depress the brake pedal a few times to bring the brake pads into contact with the disc. Check the operation of the brakes carefully before driving the vehicle.