AP31.11-P-3121-02BA | Checking ball neck for proper function | If ball neck does not function properly, it can no longer be used |
P31.11-0005-01
1 Turn hand wheel on ball neck to position "OPEN" (AUF).
2 Hook ball neck into trailer coupling and press downward; the ball neck should lock automatically.
The mark on the hand wheel should be in the position "LOCKED" (ZU).
3 Lock hand wheel with lock. It should not be possible to turn the hand wheel to the position "OPEN" (AUF).
If lock is missing, do not press hand wheel for this test.
4 Remove ball neck after testing.