GEAR (48 Teeth) 3K1068 - Caterpillar

Table 1
Ask the driver to answer the following questions before attempting to repair an intermittent problem, or a problem with symptoms but no diagnostic codes. Use this and the response guideline to these questions on the next page.
Questions Yes Comments
1. Ask the driver if the check engine lamp turned on during the problem or if the check engine lamp turned on after the problem.
The check engine lamp stays on for the following time period:
2. Ask the driver for the number of occurrences for this problem.
Ask the driver to duplicate the problem if the problem can be duplicated in less than one hour.
3. Ask the driver if other shops have worked on the same problem.
If the answer is yes, ask the names of the shops. Also ask for the time period for the work that was performed.
4. Ask the driver if the engine completely shut down. Ask the driver if the restart required the use of the key switch.
Ask the driver for the waiting period before the driver could restart the engine after the shutdown.
5. Ask the driver if the engine had a hesitation, a speed burp or a misfire without a complete shutdown.
6. Ask the driver if the radio, dash gauges or lights momentarily turn off during an occurrence of the problem.
Ask the driver if there are any other observations about the truck's components.
7. Ask the driver if the problem occurs only at specific engine loads.
Ask the driver for additional details.
8. Ask the driver if the problem occurs at a specific engine operating temperature.
If the problem occurs at a specific engine operating temperature, record the engine temperature.
9. Ask the driver if the problem occurs only at specific outside temperatures or temperature ranges.
If the problem occurs only at specific outside temperatures or temperature ranges, record the outside temperature or temperature range.
10. Ask the driver if the problem occurs during any other specific conditions.
11. Ask the driver if the problem occurs at a specific vehicle speed.
If the problem occurs at a specific vehicle speed, record the vehicle speed.
12. Ask the driver if the vehicle kicked out of cruise control mode, idle mode or PTO mode.
13. Ask the driver if the problem occurs during the use of the accelerator. During this time, the engine is not in cruise control mode or PTO mode.
14. Ask the driver if the problem occurs at a specific engine rpm.
If the problem occurs at a specific engine rpm record the engine rpm.