mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

AP31.11-P-3121BB Lubricate and Check Operation of Trailer Hitch With Detachable Ball Neck|Page 14615 > < AP31.11-P-3121BB Lubricate and Check Operation of Trailer Hitch With Detachable Ball Neck
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Trailer Hitch: Testing and Inspection
AP31.11-P-3121-02BB Checking Function of Ball Neck

AP31.11-P-3121-02BB Checking Function Of Ball Neck

- with CODE (550) Trailer hitch

1. Visual inspection for mechanical damage.
2. Pull out the hand wheel and turn toward "red," continuing until it latches.
3. Slide the ball neck vertically into the ball neck support, continuing until the ball neck locks automatically.

The green marking on the hand wheel must align with the white marking on the ball neck.

4. Disconnect hand wheel.

It must not be possible to pull the hand wheel outwards.

5. Remove ball neck after checking.

AP31.11-P-3121BB Lubricate and Check Operation of Trailer Hitch With Detachable Ball Neck|Page 14615 > < AP31.11-P-3121BB Lubricate and Check Operation of Trailer Hitch With Detachable Ball Neck