Symptom Related Diagnostic Procedures

Before attempting to repair the transfer case or related components for any reason other than mechanical failure, the condition and probable causes should be identified. Transfer case failures are revealed by shifting difficulties such as excessive shifting effort, gear clash, or gear grinding. When any of these conditions occur, the following inspections should be made before disassembling the transfer case.

Inspect
1. Transfer case oil level for insufficient or incorrect oil.
2. Transfer case mounts for wear or looseness.
3. Gearshift control lever for distortion or excessive wear.





After performing the above inspections, refer to the TRANSFER CASE DIAGNOSIS for diagnosis of transfer case noise and shifting difficulties under various conditions.