Engine - Workshop Manual Update and Revision
83amcjeep01MARCH 1983 000 022
1981-83 JEEP
6E
Attention: Workshop, Parts Department
ENGINE
WORKSHOP MANUAL UPDATES AND REVISIONS
1. SERPENTINE DRIVE BELT
2. CEC SYSTEM DIAGNOSTIC TESTS - 1983 SIX-CYLINDER ENGINES
1. SERPENTINE DRIVE BELT
The serpentine drive belt used on 1981-83 Jeep models can be expected to develop some random cracks in one or more of the belt ribs during the life of the belt.
These random or sporadic cracks are a normal development that usually occurs during the latter part of the belt's service life. The cracks do not affect belt performance and actually improve belt flexibility.
The only time belt replacement for rib cracking is warranted, is when the cracks are at or beyond the full depth of the rib, or if some of the cracks run parallel to the belt ribs.
Make a note of this information in the serpentine drive belt diagnosis charts in Chapter 1C of the 1981-82 Jeep Technical Service Manuals.
CEC DIAGNOSTIC CHART:
2. CEC SYSTEM DIAGNOSTIC TESTS - 1983 SIX-CYLINDER ENGINES
The CEC system diagnostic chart needs to be revised. This chart is found on page 77 of Supplement No. 1 to the 1982 Jeep Technical Service Manual. Please revise the indicated chart box by changing the diagnostic connector pin number from pin 12 to pin 10 as shown on the sample page.