Absolute Brake AB500L Air Brake Plunger Securing Device

Absolute Brake AB500L Air Brake Plunger Securing Device

AB500L - For trucks built after Mid-2008 or trucks that have replaced the original PP-DC or MV-3 value with the new design. On the new design, the plastic shaft is smooth and tapered, not like the early style that has a stop on the shaft.

Installation Instructions

Prior to placing the Absolute Brake AB500L into position, the Absolute Brake Cap should be facing the person applying the AB400L/AB500L device (see Figure # 1).

Lightly swivel the AB500L back and forth in between the base of the Bendix Air Brake Controller Valve and the Plunger Knob/Cap, until it locks securely into place (See Figure # 2).

Once in position, the AB500L should be a snug fit and the operator should not be able to engage the parking brake you may need to adjust the Plunger Knob by either turning it clockwise or counter-clockwise (see Figure # 3).

There are flared entry holes on both sides of AB500L for the optional Master Lock to easily slide all the way through the device and, once completely through the holes, it can be easily locked (see Figure # 4).

To remove the AB500L Air Brake Plunger Securing Device, simply swivel the device back and forth while pulling the device away from the control valve. We hope you enjoy the Safety, Security & Peace of Mind this product provides you!