Question

How do you check that the fifth wheel jaws have locked to the trailer pin?

a) Visually inspect from the driver's seat
b) Listen for a clicking sound
c) Pull the trailer to test
d) Measure the temperature

Answer 1

To check if the fifth wheel jaws have locked to the trailer pin, you can visually inspect from the driver's seat, listen for a clicking sound, or pull the trailer to test.

Step-by-step explanation:

To check if the fifth wheel jaws have locked to the trailer pin, there are a few methods:

1. Visually inspect from the driver's seat: While sitting in the driver's seat, you can look in the rearview mirror or use a backup camera to see if the jaws of the fifth wheel are securely latched onto the trailer pin.
2. Listen for a clicking sound: When the fifth wheel jaws lock onto the trailer pin, they make a distinct clicking sound. You can listen for this sound as you lower the trailer onto the fifth wheel.
3. Pull the trailer to test: After connecting the trailer to the fifth wheel, apply slight forward pressure to the truck and trailer. If the fifth wheel jaws have properly locked onto the pin, there should be resistance when you try to pull the trailer.