5.2.5. Check of hinges of equal angular speeds
Turn a wheel in any party against the stop. Hinges rigidly sit in the plastic loose leaves of rotary levers filled with long-term greasing. And dirt they are protected from moisture by plastic covers.
Getting inside the metal crumb, sand and moisture can lead to formation of corrosion and hinge destruction.
Check a condition of covers on hinges. In case of detection of cracks and damages replace them.
Check axial люфт in hinges.
Check cross-section люфт.