Krone BiG X 770-3 - Servicing the Tow Coupling

Maintenance – Basic Machine
635
21.7 Servicing the tow coupling
BX480385
2
1
BX480386
5
3
a
4
Fig. 558
Maintenance work on the trailer coupling:
• Check the thickness of the wearing plate (1).
If the wearing plate is thinner than 6 mm:
• Have the wearing plate changed by a service centre.
• Check the diameter of the coupling pin at the thickest point.
If the diameter of the coupling pin is less than 37 mm:
• Have the coupling pin changed by a service centre.
• Check the degree of wear of the coupling gap.
If the coupling gap is worn by more than 1.5 mm or the gap (a) between the coupling jaw (3)
and coupling carrier (4) is greater than 3 mm at any point:
• Replace the trailer coupling.
BX480387
6
Fig. 559
• Check the turning capacity of the coupling jaw (3).
If the coupling jaw (3) is stiff:
• Loosen the screw (5).
• Lubricate the grease nipple (6).
• Turn the coupling jaw (3) by one turn and tighten the screw (5) to a torque of 35 – 50 Nm.