RAM 1500 Truck 4WD V8-5.9L VIN Z LDC (1999)
Brake Bleeding: Service and Repair
Antilock Brake System Bleeding Procedures
W/ Four Wheel Antilock Brakes
ABS system bleeding requires conventional bleeding methods plus use of the DRB scan tool. The procedure involves performing a base brake
bleeding, followed by use of the scan tool to cycle and bleed the HCU pump and solenoids. A second base brake bleeding procedure is then required
to remove any air remaining in the system.
1. Perform base brake bleeding.
3. Select ANTILOCK BRAKES, followed by MISCELLANEOUS, then ABS BRAKES. Follow the instructions displayed. When scan tool displays
TEST COMPLETE, disconnect scan tool and proceed.
4. Perform base brake bleeding a second time.
5. Top off master cylinder fluid level and verify proper brake operation before moving vehicle.
W/ Rear Wheel Antilock Brakes
Use Mopar brake fluid, or an equivalent quality fluid meeting SAE J1703-F and DOT 3 standards only. Use fresh, clean fluid from a sealed container
at all times.
Do not pump the brake pedal at any time while bleeding. Air in the system will be compressed into small bubbles that are distributed throughout the
hydraulic system. This will make additional bleeding operations necessary.
Do not allow the master cylinder to run out of fluid during bleed operations. An empty cylinder will allow additional air to be drawn into the system.
Check the cylinder fluid level frequently and add fluid as needed.
Bleed only one brake component at a time in the following sequence:
-
Master Cylinder
-
Combination Valve
-
Rear Antilock Valve
-
Left Rear Wheel
-
Right Rear Wheel
-
Right Front Wheel
-
Left Front Wheel
MANUAL BLEEDING
1. Remove reservoir filler caps and fill reservoir.
2. If calipers, or wheel cylinders were overhauled, open all caliper and wheel cylinder bleed screws. Then close each bleed screw as fluid starts to
drip from it. Top off master cylinder reservoir once more before proceeding.
Bleed Hose Setup
3. Attach one end of bleed hose to bleed screw and insert opposite end in glass container partially filled with brake fluid. Be sure end of bleed hose is
immersed in fluid.
4. Open up bleeder, then have a helper press down the brake pedal. Once the pedal is down close the bleeder. Repeat bleeding until fluid stream is