Lubricating the Foot Brake Valve Actuator, Bendix E–6

1. Remove the brake valve. For instructions, see Chassis Plumbing Diagram of the Shuttle Bus Chassis Workshop Manual, or take the vehicle to an authorized Freightliner dealer.
2. From the outside of the cab, pull the valve away from the frontwall and remove the brake plunger.
3. Wipe off the old grease from the plunger and the adaptor.
4. Inspect the bore of the adaptor and the sliding surface of the plunger. While some discoloration is permissible, there should be no pitting or roughness of the adaptor bore or the sliding surface of the plunger. If pitting or roughness exists, replace damaged parts with new ones.
5. Lubricate the adaptor bore and the sliding surface of the plunger with an approved silicone-based grease, Dow Corning 55 O-Ring Lubricant (formerly Molykote DC–55M), or Loctite® V–755 O-Ring Lubricant.
6. Using a new gasket, install the plunger and brake valve following the instructions in Chassis Plumbing Diagram of the Shuttle Bus Chassis Workshop Manual.