Repair
Disassembling coupling bolt and pertaining locking springs
Disassembling hand lever and ratchet lever
Disassembling coupling body and guide bush
Exchanging plastic bearing bushes
Exchanging rubber springs
Disassembling wear plate
Refitting and Upgrading
Changing coupling head: Type 5050 A > AM
Sensor assembly
Changing handles: Type 5050 A > B