The Pacbrake Exhaust Brake system requires regular lubrication to maintain the brake in good working order. Road grime, weather conditions and condensation build up from engine idling can dry out the moving parts of the RV exhaust brake. Without added lubrication, over time the parts will wear and cause the brake system to eventually freeze up.

The Pacbrake Exhaust Brake is located in the engine compartment and identified as a butterfly valve. Pins connected to the Pacbrake Exhaust Brake are labeled with a vendor tag. The brake should be lubricated using a non-petroleum base lube. Avoid lubricants that contain petroleum distillate. The component manufacturer distributes a lubricant specially designed for the Pacbrake Exhaust Brake system and available at most auto and RV engine supply outlets.

While working on the Pacbrake Exhaust Brake in the engine compartment you can disconnect the power wire off the Pacbrake solenoid to power up and to open and close the Pacbrake exhaust.

With the engine off, apply lubricant around the cylinder at each end and also at the back where the cylinder attaches to the bracket. Additionally, lubricate around the linkage pin and on the brake shaft. Once done, cycle the brake a few times to move the lubricant around.

Examine the Pacbrake Exhaust Brake at each oil change for wear and tear. To maintain the system in good working order, it is recommended to lubricate the Pacbrake one time per year, more often if the system is exposed to high humidity locations. Always lubricate the system before putting the RV into storage over thirty days.

An effective way to insure dependability of the system is through frequent use of the Pacbrake Exhaust brake. Lack of use can cause carbon build up that results in seizing of the Pacbrake butterfly valve. If the engine coughs and sputters on start up and throttle pressure results in low power or no power, the Pacbrake Exhaust brake may be stuck and you should seek assistance from a qualified technician.