Customer Walk-Through
- Explain the correct procedure for trailer coupling and safety attachment.
- Instruct the customer on required maintenance milestones including the 50-mile re-torque.
- Demonstrate the proper identification of tire load and pressure specifications.
- Torque Wrench — Used to perform the 50-mile re-torque of the lug nuts to ensure they remain secured.
- Tire Pressure Gauge — Used to verify that tires are inflated according to the tire load and pressure placard.
- Walk-through Checklist — A formal document used to track the completion of delivery steps and obtain the customer's signature.
Show the customer how to couple, attach safety chains (crossed), connect the plug and the breakaway cable.
Explain that new brakes need break-in and that lug nuts must be re-torqued after the first 50 miles.
Point out the tire load and pressure placard and the maintenance schedule.
Have the customer sign the walk-through checklist.
How It Works
Mechanical Coupling and Safety
Proper delivery includes showing the customer how to couple the trailer, connect the plug, and attach the breakaway cable. Safety chains must be crossed during attachment to provide a cradle in the event of a disconnect.
Component Break-in Requirements
New trailers require a specific break-in period for the brakes. Additionally, the mechanical interface of the wheels requires that lug nuts be re-torqued specifically after the first 50 miles of operation.
Operational Information Labels
The trailer features a tire load and pressure placard and a maintenance schedule. These must be pointed out to the customer to ensure the trailer is operated within safe load limits and maintained correctly.
Diagnostic Chart
| Symptom | Check | Spec / Expected | Likely cause & fix |
|---|---|---|---|
| Customer is unaware of wheel securement requirements. | Review the delivery explanation regarding wheel lug nuts. | Lug nuts must be re-torqued after the first 50 miles. | The 50-mile re-torque requirement was not clearly explained during the walk-through. Basis: General shop practice (not from a downloaded manual) |
| Safety chains are dragging or poorly positioned. | Observe the customer's attachment method for safety chains. | Safety chains must be crossed. | Failure to cross the chains during the coupling demonstration. Basis: General shop practice (not from a downloaded manual) |
| Brake performance is inconsistent on a brand new trailer. | Verify if the customer was informed of the break-in procedure. | New brakes need break-in. | Normal behavior for new components that have not yet completed the required break-in period. Basis: General shop practice (not from a downloaded manual) |
At the Bay: Diagnose the Case
CASE 1 / 3
Customer is unaware of wheel securement requirements.
- Test
- Compare
- Correct
Select the next check
Basis: General shop practice (not from a downloaded manual). A likely cause is a hypothesis; confirm it with the applicable service procedure before repair.
Common Bay Mistakes
- ✕ Forgetting to have the customer sign the walk-through checklist.
- ✕ Neglecting to show the specific location of the tire load and pressure placard.
- ✕ Failing to explain that safety chains must be crossed.
- ✕ Omitting the explanation for the breakaway cable connection.
- ✕ Skipping the 50-mile re-torque warning for the lug nuts.
Quick Check
Practice only — not scored.
Source: General shop practice (not from a downloaded manual)