Maintenance
117
table 2 coupling Heads
Fault
cause
remedy
Coupling does not
engage onto ball
Ball diameter too large.
Ball could be damaged or deformed.
Coupling head dirty or defective.
Change ball to correct size.
Fit new ball.
Clean & Lubricate coupling and replace if necessary.
Difficulty in Uncoupling
Ball damaged or deformed.
Coupling damaged or deformed.
Coupling head under pressure from damper.
Fit new ball.
Replace if necessary.
Pull forward a few inches to to relieve pressure
Too much play in the
coupling
Coupling damaged or deformed
Ball too small
Replace if necessary.
Fit new ball.