| Author: |
| ||||
| Subject: |
| ||||
| Message: | Failed brake bomb will give you: * a VERY hard pedal * a pedal "rebound" upon brake application * very difficult braking A failed Master Cyl. or (air in the brake lines) will give you * a VERY spongy brake pedal * erratic directional control whilst braking (depending upon where the air is in the line) So what causes a failed bomb.... as far as I know..it is only age (time in use) related What causes a failed MC ? Quite simply failed seals. So what causes seals to fail..... the painful truth... poor MX Quite simply, a brake system that has the fluid changed each and every year (as called for in the MX Manuals) will virtually NEVER fail .... Why? Because fresh brake fluid, with no moisture content is incapable of corroding the Master Cyl walls. MC wall corrosion creates micro-fine knives that CUT the lips of the rubber seals. So, when you use the "pump" method to bleed the brakes on a tired poorly maintained brake system you are virtually assured of killing your MC. Lastly.. one more reason to fully flush the brake system EVERY IAW the mx manuals.... Guess what happens during the first really hard freeze when you have old brake fluid LOADED with moisture... you get little ICE CRYSTAL KNIVES in your brake fluid. Those little ice crystal knives cut the lips of the MC seals and .... you guessed it... you have a MC (brake) failure... (hint.... if your brake fluid is more than 1 year old.. go change it. If you are lucky, the fluid will actually dribble out when you open the caliper bleeder. However you may need to help it along with a vacuum or blow through type bleeder. Worst case .... if you HAVE to pump it out... DO NOT !!!!!! use a full pedal stroke... Keep your stroke to the "NORMAL" stroke range.) Regards All JS John Stein 85 745 @ 1.2 bar 85 M635CSi 84 633 | ||||
© 1997 -
2009
Jump Internet Inc. All rights reserved.
