Diagnostic Information
Excessive drive belt wear is usually caused by improper installation or improper selection of the drive belt. A slight misalignment of the pulley does not cause excessive wear to the drive belt, but it does cause it to slip. Severe pulley misalignment can lead to excessive wear on the drive belt, but also causes it to slip.
Description of the test
The item numbers below are the step numbers in the diagnostic table.
- Confirms the correct installation of the drive belt on all pulleys of the accessory drive system. Drive belt wear can be caused by improper placement of the drive belt in one or more grooves on a particular pulley.
- Installing a drive belt with the wrong width will wear it out. The ribs of the drive belt must align with all grooves on all pulleys in the accessory drive system.
- Confirms that the drive belt is not in contact with any part of the engine or body during operation. Sufficient clearance must always remain when loads on accessory drive components change. The drive belt must not come into contact with any parts of the engine or bodywork.
Diagnostic table
Definition: Excessive wear can be defined as wear on the outer ribs of the drive belt (frayed edges), usually caused by incorrect installation of the drive belt.
| Step | Operation | Values | Yes | No |
| 1 |
Have you reviewed the information in the section "Symptoms", and performed the required checks?
|
-
|
Go to operation 2
|
Go to item Symptoms
|
| 2 |
Check that the accessory drive belt is correctly installed.
Is the drive belt installed correctly?
|
-
|
Go to operation 5
|
Go to operation 3
|
| 3 |
Make sure the drive belt is suitable for the application.
Is the correct drive belt installed?
|
-
|
Go to operation 5
|
Go to operation 4
|
| 4 |
Does the drive belt come into contact with any engine or body components while the engine is running?
|
-
|
Go to operation 6
|
See diagnostic advice in this section
|
| 5 |
Install a new accessory drive belt, see Section 1B, Engine Mechanical - 2.0 Diesel.
Has the accessory drive belt been replaced?
|
-
|
Go to operation 6
|
-
|
| 6 |
If required, reinstall the accessory drive belt and operate the system to confirm repair is complete.
Has excessive wear been eliminated?
|
-
|
The drive system of the aggregates is in order
|
Go to operation 2
|