F 250 2WD Pickup V8-7.3L DSL Turbo VIN F (1994)
Vacuum Brake Booster: Service and Repair
Brake Power Booster
ITEM
PART
DESCRIPTION
NUMBER
1
2005
Power Brake Booster
2
--
Valve Plunger (Part of 2005)
3
--
Valve Operating Rod (Part of 2005)
4
--
Rubber Reaction Disc (In Position) (Part of 2005)
5
--
Master Cylinder Push Rod (Part of 2005)
6
--
Front Seal (Part of 2005)
CAUTION: Make sure the booster rubber reaction disc is properly installed as shown in the above illustration. If the master cylinder push rod is
removed or accidentally pulled out, it may dislodge the rubber reaction disc from its seat in the booster. Symptoms of a dislodged disc are excessive
pedal travel and extreme power brake sensitivity. If the master cylinder push rod is removed, remove the booster front seal and look into the booster to
where the push rod seats. The disc is black rubber. If the disc is dislodged, a silver colored plunger will be exposed. If the rubber reaction disc cannot be
located, installed and aligned, then the booster unit must be replaced.
NOTE: If power brake booster is damaged or inoperative, replace it with a new booster. The power brake booster is serviced only as an assembly,
including the check valve.