Original Caterpillar factory service manual covering D379, D398, and D399 industrial and marine engines. Includes service procedures, troubleshooting, testing and adjusting, specifications, disassembly, inspection, and repair information.

Publication Number SEBR0511

Models Covered

D379

D398

D399

Serial Numbers

D379: 68B2540-Up & 69B1227-Up

D398: 66B3561-Up & 67B1391-Up

D399: 35B688-Up & 91B387-Up

Condition Notes

Heavy shop wear

Binder holes reinforced and worn

Cover staining and dirt from field use

Appears complete from visible edge thickness

Original OEM Caterpillar manual