Coupling_Uncoupling_Procedures

Question 1

What should you inspect before coupling?

Answer 1

Fifth wheel condition, trailer height, and brake setting

Question 2

How should the trailer be positioned for coupling?

Answer 2

Level, with landing gear supporting nose weight

Question 3

What height should trailer be for coupling?

Answer 3

Slightly lower than fifth wheel to ensure proper connection

Question 4

How do you position tractor for coupling?

Answer 4

Square with trailer and back slowly until contact

Question 5

What should you do just before coupling?

Answer 5

Check that trailer brakes are set

Question 6

How do you know when coupling is complete?

Answer 6

Fifth wheel jaws lock around kingpin with audible click

Question 7

What should you check after coupling?

Answer 7

Jaws locked around kingpin and safety latch in place

Question 8

How do you test the coupling?

Answer 8

Pull forward gently to ensure trailer is securely attached

Question 9

What should you connect after coupling?

Answer 9

Air lines and electrical connections

Question 10

Which air line connects first?

Answer 10

Emergency line (blue) then service line (red)

Question 11

What is the emergency air line?

Answer 11

Blue line that provides air for trailer emergency brakes

Question 12

What is the service air line?

Answer 12

Red line that carries air to operate trailer service brakes

Question 13

How do you connect electrical cable?

Answer 13

Plug into trailer socket and secure with safety catch

Question 14

What should you do with landing gear after coupling?

Answer 14

Raise it fully and secure crank handle

Question 15

How do you check that landing gear is fully raised?

Answer 15

Visual inspection and checking for proper clearance

Question 16

What should you inspect about the kingpin?

Answer 16

Not bent, cracked, or excessively worn

Question 17

How should the fifth wheel be positioned?

Answer 17

Tilted down toward rear of tractor

Question 18

What should you check about fifth wheel?

Answer 18

Proper lubrication, mounting, and jaw operation

Question 19

What are glad hands?

Answer 19

Connectors used to join air lines between tractor and trailer

Question 20

How do you connect glad hands properly?

Answer 20

Turn to lock position and ensure secure connection

Question 21

How do you prevent glad hands from collecting dirt?

Answer 21

Use dummy couplers when lines are disconnected

Question 22

What should you do before uncoupling?

Answer 22

Park on level ground and chock trailer wheels

Question 23

How do you prepare trailer for uncoupling?

Answer 23

Lower landing gear until it supports trailer weight

Question 24

What should you disconnect first when uncoupling?

Answer 24

Electrical connections then air lines

Question 25

How do you safely disconnect air lines?

Answer 25

Release air pressure then disconnect lines

Question 26

What should you do with air lines after disconnecting?

Answer 26

Install dummy couplers to prevent contamination

Question 27

How do you release the fifth wheel for uncoupling?

Answer 27

Pull release handle while tractor supports trailer weight

Question 28

What should you check about uncoupling clearance?

Answer 28

Ensure adequate space to pull tractor away from trailer

Question 29

How do you pull away after uncoupling?

Answer 29

Pull forward slowly and check clearance

Question 30

What should you inspect after uncoupling?

Answer 30

Fifth wheel for damage and proper position for next coupling

Question 31

What safety procedures apply to coupling area?

Answer 31

Watch for other vehicles and people in area

Question 32

How do you handle coupling on uneven ground?

Answer 32

Use extra care with landing gear and fifth wheel height

Question 33

What should you do if coupling doesn't work properly?

Answer 33

Stop and inspect - don't force connections

Question 34

How do you ensure electrical connections work?

Answer 34

Test lights and signals after connecting

Question 35

What should you check about air pressure after coupling?

Answer 35

That pressure builds properly in trailer system

Question 36

How do you test trailer brakes after coupling?

Answer 36

Use trailer hand valve to check brake response

Question 37

What is the sequence for safe coupling?

Answer 37

Inspect, position, couple, connect systems, test, secure

Question 38

What is the sequence for safe uncoupling?

Answer 38

Prepare area, lower landing gear, disconnect systems, release, pull away

Question 39

What should you never do during coupling/uncoupling?

Answer 39

Rush the process or skip safety checks

Question 40

What is the most important coupling/uncoupling safety rule?

Answer 40

Take your time and follow proper sequence every time