Question: 2.7.07-303

3 Points

Licenses: CE

What is the maximum vertical play permitted for a coupling pin?

Choose one or multiple correct answers

A. 4 mm
B. 2 mm
C. 6 mm

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Correct answer

A. 4 mm

Comment

The coupling pin must have a maximum height of 4 mm play. If it is too high, it jerky. If it is too low, the bolt when closing the clutch can not engage more.

Trailer coupling systems

Chapter 2.7.07

2.7.07-201 What control and service work has to be carried out regularly on a fifth wheel?

2.7.07-202 What is the maximum wear allowed for a coupling pin on an automatic trailer coupling with a diameter of 38.0 mm when new?

2.7.07-204 What can be the effect of longitudinal play of the tow-bar of a trailer coupling?

2.7.07-206 Is the tow-bar of a trailer coupling allowed to have longitudinal play?

2.7.07-208 What must you consider when coupling a trailer with ball coupling?

2.7.07-209 What must be checked after you have coupled a multiple-axle trailer to an automatic trailer coupling?

2.7.07-302 What must you do after attaching a semitrailer?

2.7.07-303 What is the maximum vertical play permitted for a coupling pin?

2.7.07-304 You take over a semitrailer which you have not used before. What must you remember before attaching the semitrailer?

2.7.07-305 What must you do before detaching a semitrailer?

2.7.07-306 What is the correct procedure when coupling up a multiple-axle trailer?

2.7.07-308 By which means should the towing bar of a multiple-axle trailer be kept on level with the coupling of the approaching truck tractor?

2.7.07-309 What must you check before coupling up a multiple-axle trailer?

2.7.07-310 You have coupled up a multiple-axle trailer which you have not used before. How can you establish that the towing fork and turning ring are dangerously worn?

2.7.07-312 How can you see that the coupling pin has engaged correctly in the case of an automatic trailer coupling?

2.7.07-314 What is the maximum wear the tow-bar eye may have?

2.7.07-315 What is the maximum play the towing fork may have in the bearing bushes in towing direction?

2.7.07-317 What can be the consequences if the tow-bar of a towing coupling has longitudinal play?

2.7.07-319 How do you have to disconnect the air lines when detaching a trailer?

2.7.07-320 What must you remember when coupling up a trailer?

2.7.07-321 What must you remember when coupling up a trailer?

2.7.07-322 What must you remember after you have coupled up a trailer to an automatic trailer coupling?

2.7.07-323 Which requirements must be fulfilled before coupling a semi-trailer?

2.7.07-324 The coupling pins of your trailer hitch have a diameter of 38 mm when new. What should you note regarding wear?

2.7.07-325 A considerable amount of longitudinal play becomes apparent in the towing device of the trailer. What effect can this have?

2.7.07-326 How much longitudinal play may there be in the drawbar of the hitch?

2.7.07-327 The drawbar of a full trailer is to be kept level with the coupling height of the approaching towing vehicle. How is this ensured?

2.7.07-328 How can you check the state of wear of the drawbar or the turntable of a full trailer?

2.7.07-329 How much wear is permitted on the diameter of the drawbar eye of the hitch?

2.7.07-330 What is the maximum permissible wear measured across the diameter of the towing ring of a drawbar?

2.7.07-401 Your tractor is equipped with a K 80 coupling system with manual locking. What must you ensure when coupling a trailer?

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Question: 2.7.07-303

3 Points

What is the maximum vertical play permitted for a coupling pin?

Correct answer

Comment

Trailer coupling systems

Chapter 2.7.07

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