This workshop service manual is a comprehensive guide for the 1991-1994 CUMMINS B SERIES 4BT 6BT diesel engines. It covers the 4BT3.9 and 6BT5.9 models and includes a parts manual/catalogue. The manual provides complete rebuild specifications and information for the B SERIES model engines and all associated components manufactured by Cummins Engine Company, Inc. It is a valuable resource for professional mechanics and DIY enthusiasts alike.
