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A jammed calliper or connecting rod when the brake pad or shoe does not return to its right position, will make
the temperature rise excessively because it rubs against the disc or brake drum. This temperature could rise so
much that it could ignite a fire in the vehicle.
You should never block a brake’s calliper or connecting rod.
The vehicle should never be driven if there is an ABS warning sign on.
The vehicle should never be driven if the brake pads, shoes, discs or drums are below the wear indexes set by
the manufacturer.
1.4 Retarder / Intarder
If an oil leak should drip onto or leave traces of oil on the connector, stop the vehicle. Otherwise, the
hydrodynamic brake could be seriously damaged.
1.5 Steering System
No vehicle should be moved if the steering system has a leak and is dripping oil, as this could cause an accident.
The steering should work without major blocking.
When the steering can be adjusted manually, the column should be fixed firmly into the position chosen.
Otherwise, the driver should never start to drive the vehicle or there may be an accident.
The system to fix the steering columns should always be activated and never off.
1.6 Front Axle
If the bushings show marked traces of oil or grease, this could mean damages to the oil seals and/or cover
gaskets. Driving in these conditions could entail the seizing up or breaking of the bushing ball bearing, or could
even cause a fire in the vehicle.
Worn or cracked ball bearings could block the affected wheel or it may become detached from its bushing.
A ball bearing or ball-and-socket joint that is too loose or beyond the tolerance limits means it is worn and
should be replaced.
1.7 Rear Axle
The group, hubs or bushings should never show signs of dripping oil.
Worn or cracked ball bearings could block the affected wheel or it may become detached from its bushing.
A ball bearing or ball-and-socket joint that is too loose or beyond the tolerance limits means it is worn and
should be replaced.
Global Maintenance Standard: Safety Critical Defects 6
