Skivkungen

Service av skivbromsar är nytt för mig. Tyckte det var smidigt med skivor och slippa allt vad bromsklossar heter, men det är mer att tänka på med hydrauliska skivbromsar...i alla fall om man är helt ny på det.
Identifiera vilka bromsar jag har: Hayes HFX 9 HD
Webbplatsen för Hayes skivbromsar är: http://www.hayesdiscbrake.com
Lite studerande av servicemanualen gav följande
Rekommenderad bromsvätska: DOT 4 eller DOT 3...jaha...ok, sökning gav att det är vanlig bromsvätska. Kan köpas på Biltema för 30kr för 0.5 liter
Skivor ska endast rengöras med Isopropylalkohol (Isopropanol). Införskaffas enklast via Apoteket.
Byte av bromsbelägg
1. Remove the wheel.
2. Using the tab in the center of the pad backing plate, pull the pad toward the center of the caliper and out. There is a spring that holds them in place. That spring snaps on to the post at the center of the piston.
3. Repeat the steps for the other side pad.
To replace the pads...
4. Using the boxed end of a 10mm wrench, push the caliper pistons back until they bottom. This will give you more room to fit in the new pads. Take care not to push on the aluminum post in the center of the piston.
Caution: Don’t push on the post in the center of the piston because that will bend the post. Walk the piston back and forth until the piston is all the way back in the bore. Do the same thing on the other side.
Note: There are two different brake pads, an inner and outer – or a right and a left. On the outer pad the tab is offset. On the inner pad the tab is in the center.
5. Put the outer pad in first. Use the tab in the center of the pad backing plate to push the new pads into place. Angle the pad slightly so the post is towards the center of the caliper and push the pad until it snaps into place. Check that the pad is locked into position.
6. Now repeat the procedure for the inner pad.
7. Install the wheel.
Lufta bromsarna (Inkluderar påfyllning av ny bromsvätska)
Air entrapped in the hydraulic system of the disc brakes can decrease performance of the system and should be removed by “bleeding” the system and replenishing the system with new brake fluid. The system is filled by pumping fluid from the lowest point (at the caliper), through the system, to the highest point, the bleeder on the master cylinder.
Note: The bleed instructions include steps for the HFX Mag and HFX-9 brake systems. Read them carefully, since instructions vary for the type of brake system you have.
Caution: Use only new DOT 4 or DOT 3 brake fluid from a closed, sealed container. Use of any other fluid can cause the rubber parts to degrade and cause the brake to fail.
Caution: DOT 4 or DOT 3 brake fluid will strip paint. Use extreme caution to avoid getting DOT 4 or DOT 3 brake fluid on paint. If DOT 4 or DOT 3 brake fluid comes in contact with paint, wipe it off immediately and rinse with isopropyl alcohol.
Warning: If you get any brake fluid on the brake pads, discard them and replace with new pads. If you get any brake fluid on the disc, clean it thoroughly with isopropyl alcohol.
Warning: DOT 4 or DOT 3 brake fluid can be an irritant when it comes into contact with human tissue. For skin contact, brake fluid should be washed off in flowing water. For eye contact, the eye area should be irrigated with flowing water immediately and continuously for 15 minutes. Consult with medical personnel. If effects occur from inhaling brake fluid fumes, move to an area with fresh air. Consult a physician. If brake fluid is ingested, induce vomiting and consult medical personnel. Used brake fluid should be disposed of according to local laws.
1. Remove the wheel.
2. Remove the brake pads so that any spilled fluid does not contaminate the pads. Using the tab in the center of the pad backing plate, pull each pad toward the center of the caliper and out. There is a spring that holds the pad in place. That spring snaps on to the post at the center of the piston.
3. Push the caliper pistons all the way into their bores using the box end of a 10 mm end wrench.
Caution: Don’t push on the post in the center of the piston because that will bend the post. Walk the piston back and forth until the piston is all the way back in the bore. Do the same thing on the other side.
4. Position the bike in a stand so that the brake caliper bleeder screw is perpendicular to the ground, and so that the reservoir plug on the master cylinder is the highest point on the brake system. This can be done by loosening the master cylinder clamp screws and rotating the master cylinder upright on the handlebars
Note: For the HFX-9 the bike should remain horizontal to the ground, and the lever should remain parallel to the ground.
5. Remove the master cylinder reservoir plug and press the fitting with the hose into the hole. The other end of the hose should go into a cup or bottle to catch the excess fluid. Be sure not to submerge the end of the hose in fluid.
Hint: Taping a spoke to a bottle and bending it to hook around the handlebars makes a convenient hanger.
Note: The HFX-9 master cylinder reservoir plug is a plastic cap, which needs to be removed with your fingers or a small flat head screwdriver. DO NOT remove the two T-10 Torx bolts holding the cap on. The HFX-9 requires the use of the silver aluminum bleed fitting included in the bleed kit.
6. Completely remove the caliper bleeder’s rubber cap.
7. Fill the plastic filler bottle with fresh DOT 3 or DOT 4 brake fluid.
8. Close the caliper bleeder.
9. Place the hose from the fluid bottle onto the caliper bleeder. Pump the fluid bottle until there is no air in the hose.
10. Open the caliper bleeder 1/4 turn.
11. Squeeze the fluid bottle firmly—forcing fluid into the caliper for a count of five. Stop squeezing - until the bottle returns to its natural shape. When the squeeze is released, air should be drawn out of the caliper. Continue alternately squeezing the fluid bottle, for a count of five, and releasing until no air bubbles come out of the caliper.
12. After all the air is out of the caliper; squeeze the bottle until fluid comes out at master cylinder with no air bubbles.
13. While squeezing the bottle, quickly stroke the lever to the handlebars, and release. Repeat this until no more air bubbles come out of the master cylinder.
14. With the bottle still being squeezed, close the caliper bleeder. Torque should be only to seal the bleeder.
Caution: Do not over torque! Release and remove the bottle and filler hose.
Ehhh...ok. Inga problem. Jag får nog läsa ovanstående några gånger innan jag gör det själv :D