< Chevelle tech tread you should give the once over. If you are using stock parts this should not be an issue. I'm currently clueless to this adjustment. When this happens the piston can't move back far enough to clear the supply hole. The valve has to move the other direction for the rear brakes.Īlso improperly adjusted or sized master plunger can cause the issue. Some proportioning valves have a button on it but it only works if the front brakes blow out. No need to constantly remove low pressure switch and center the low pressure valve during the brake bleeding process!" Tool is designed to lock the low pressure shut valve to allow fast and easy brake system bleeding. Will also work on AC Delco 172-1353, 172-1371 and many other GM proportioning-combination valves. Works with all popular non adjustable GM style combination valves. This item makes bleeding your brake system much easier. After the bleeding process is finished, simply remove our PvBT Tool and reinstall the warning light switch. "Performance Online's new Combination and Proportioning Valve Bleed Tool is designed to replace the warning light switch (white plug) on the proportioning valve during the brake bleeding process. I'm no brake 've been seeing this topic a lot lately.It's almost epidemic in scale. I know the brake warning light works as it illuminates when emergency pedal is pushed. Last time car was driven (last fall) everything was working as far as the brakes. Obviously something is blocking the fluid to both rear brakes. But there is no illuminted brake light and then used a test light which didnt illuminate when I touched it to the connector on the proportioning valve. So I thought maybe the piston /shuttle in the propotioning valve closed the rear off. Also when cracking open the rear bleeders (both sides) the pedal stayed firm. After pumping up the pedal and cracking the bleeder open I was getting a small amout of fluid with some bubbles.Subsequent bleeding attempts produced no fluid when the bleeder was opened. So after vacuum bleeding i attempted to bleed them by pumping the pedal. Was able to get the fronts to gravity bleed but not the rears. Hooked up the last of the new brake lines and then went about gravity bleeding all four. Started today by bench bleeding the freshly rebuilt master cylinder. Pretty much everything was replaced or restored except the proportioning valve on the frame. Finished up a fair sized brake job on my 69 SS.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |