OEM Dodge Ram 3500 Van Brake Master Cylinder

Dodge Ram 3500 Van Brake Master Cylinder Parts and Q&A

• Master Cylinder
  4897210AB
  Q: How should a new Brake Master Cylinder be installed and bled on Dodge Ram 3500 Van?

  A:

  It is necessary to lay out bleed tubes and use a wood dowel to stroke the pistons in the brake master cylinder, before replacing the old brake master cylinder on the vehicle. First, hold the brake master cylinder in a vise and insert each bleed tube into one of the cylinder outlet ports, then place the end into the reservoir. Fill up the reservoir with new brake fluid, press the cylinder pistons together using the dowel, then release them so that spring force can push them back into place. Repeat till you no longer see air bubbles in the fluid. Check that the engine is switched off, step on the brake pedal repeatedly to let the booster's pressure down, disconnect the brake lines from the brake master cylinder, unfasten the mounting nuts and pull the brake master cylinder away from the studs. The first step is to secure the brake master cylinder on the mounting studs, attach the mounting nuts, tighten them to 23 Nm (17 ft. lbs.), then position the brake lines, tighten them to 16 Nm (145 in. lbs.) and end by bleeding the base brake system.
• Reservoir
  4882865
  Q: How to service the brake master cylinder on Dodge Ram 3500 Van?

  A:

  Turn the engine off, then press the brake pedal a number of times to drain the vacuum from the booster before you start. After that, get rid of the brake lines from the brake master cylinder and take out the nut for its mounting before unlinking the brake master cylinder from the studs. When you install a new brake master cylinder, don't forget to bleed it first. Centralize the output rod in the booster valve and match the brake master cylinder with the rod, so the rod slides into the cylinder sleeve. Place the brake master cylinder on the studs, add all the specified mounting nuts and tighten them to 23 Nm (17 ft. lbs.). Last, attach the brake lines and wind them tightly to 16 Nm or 145 in. lbs. and then proceed to bleed out the basic brake system.