D 250 Pickup V6-239 3.9L (1989)
Fig 2 Cast Iron Master Cylinder (Top View)
1. Disconnect primary and secondary brake tubes from master cylinder.
2. Remove nuts that attach master cylinder to power brake unit.
4. Slide master straight out from power brake unit.
Aluminum Master Cylinder
Master Cylinder
1. Position master cylinder over studs of power brake booster.
2. Align push rod with master cylinder piston.
3. Install attaching nuts and tighten to specification 20-23 Nm (170-230 in lb).
4. Connect brake tubes and tighten to specification 19 Nm (170 in lb).
5. Bleed brake system being sure to maintain the master cylinder fluid level.
For additional information see Notes, Warnings, and Hints. See: Fundamentals and Basics
Cast Iron Master Cylinder