how do you bleed the brakes on a 99 jimmy i just replaced the caliper rotor and pads...cant seem to get the brakes bledOptional Information: 1999 GMC Jimmy 4.3Already Tried: I have replace the back rotors, calipers and pads...cant get the brakes bled
Start at farthest wheel away and work your way closer to the master cylinder. Try bleeding them without running the engine you may have better luck. Did you bench bleed the calipers before installation?
Reply to Emily's Post: I was told I did not have to bench bleed the calipers...?I tried both w/ engine on and off...now I am being told I need to ajust the e-brake...gosh I am lost!!!!
NoticeJust let me know if you need any more help.Brake fluid will damage electrical connections and painted surfaces. Use shop cloths, suitable containers, and fender covers to prevent brake fluid from contacting these areas. Always re-seal and wipe off brake fluid containers to prevent spills.
Brake fluid will damage electrical connections and painted surfaces. Use shop cloths, suitable containers, and fender covers to prevent brake fluid from contacting these areas. Always re-seal and wipe off brake fluid containers to prevent spills.
If air has entered the hydraulic brake system, bleed the system. You may need to bleed the hydraulic brake system at all four wheels due to one of the following conditions:
If a pipe is disconnected at one wheel, then only bleed that wheel.
If the master cylinder has been removed, bench bleed the master cylinder before installing it on the vehicle in order to reduce the time required to bleed the system. Refer to Master Cylinder Bench Bleeding .
If the BPMV has been replaced or has air trapped in it, refer to Brake Pressure Modulator Valve (BPMV) Replacement in Antilock Brake System.
NoticeUse the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten the bleeder valve to 7 N·m (62 lb in).
Use a diaphragm-type pressure bleeder. The pressure bleeder must have a rubber diaphragm between the air supply and the brake fluid. This prevents the following items from entering the hydraulic brake system:
Tighten the wheel cylinder or caliper bleeder valve to 7 N·m (62 lb in).
Experience: 26 years of mechanics experience
Reply to john's Post: Hey John, Thanks..I seem to have no pressure at the rr tire when depressing the brake pedal and holding...I loosen the bleeder but the fluid basically dribbles out...normally when I have done this in the past air and fluid would express under pressure? Was i supposed to bench bleed the calipers?
It is usually a good idea to bench bleed but since you are this far along,we can skip that.You may have a lot of air in the caliper,that is why you have pressure when your foot is on the pedal-but after cracking the bleeder-only get a dribble.Try to follow the instructions that I sent,and keep bleeding-sometimes it takes a little time.
Reply to john's Post: Hey John, I am accepting your answer...great info and thank you very much...But the Pedal is spongy not firm...I will continue to bleed...It just has never taken this long before...