Releasing Mechanically - Mercedes-Benz Atego Manual

Releasing the spring-loaded parking brake mechanically
In an emergency, if there is insufficient reservoir pressure in the brake system, the spring-loaded parking brake
can be released mechanically to allow the vehicle to be towed away.
Risk of accident
Before releasing the spring-loaded parking brake, secure the vehicle with wheel chocks to prevent it from
rolling. Attach a clearly visible sign on the mechanically released spring-loaded parking brake in the vehicle
interior. The spring-loaded cylinders of the parking brake must be restored to the operational state before the
vehicle is operated.
The vehicles can be fitted with the spring-loaded cylinder with release screw, the spring-loaded cylinder with
release indicator or the twin-diaphragm brake cylinder on different axles.
Vehicle
4 x 2, 4 x 4
6 x 2, 6 x 2/4
1
Brake position
2
Release position
Releasing the spring-loaded parking brake mechanically
!
Maximum release torque 70 Nm. Do not use an impact wrench.
Turn the release screws of the spring-loaded cylinders all the way counterclockwise to the release
position 2.
Restoring spring-loaded parking brake to operational state
Fill brake system up to cutoff pressure.
Secure vehicle using wheel chocks to prevent it from rolling.
Move lever of parking brake valve to release position.
Clean and grease release screw before screwing in.
Turn the release screw of the spring-loaded cylinder clockwise into position and screw tight.
Front axle
Guidelines for Breakdown Services (Subject to technical modifications)
Rear axle(s)
X X
X
Brake system
G
—
—
i
83