GM Service Manual Online
For 1990-2009 cars only

The medium duty bus uses many different manual transmissions. Because of the many different manual transmissions, only a brief description follows. For further explanation of the description and operation of a certain Eaton Fuller manual transmission, refer to the Eaton Fuller website http://truck.eaton.com/na/service_products/service_manuals/. Or contact Eaton Fuller transmission for the transmission service manual. For correct identification of the transmission, refer to the identification tag located on the transmission. Refer to Engine and Transmission Usage in General Information. It is important to use the proper service manual and to order the correct parts for the specific transmission. Some models have different gear ratios and other internal components to meet the customer requirements. The transmission RPO will determine the correct components.

RPO MSC Eaton Fuller Model FS4205B

The FS4205B is a five-speed transmission. The five forward gears are synchronized. The transmission is used with engines up to 420 lbs. Ft. torque.

RPO MPU Eaton Fuller Model FS5205A

The FS5205A is a five-speed transmission. The five forward gears are synchronized. The transmission is used with engines up to 520 lbs. Ft. torque.

RPO MM7 Eaton Fuller Model FS5406A

The FS5406A is a six-speed transmission. The six forward gears are synchronized. The transmission is used with engines up to 560 lbs. Ft. torque.

RPO MK0 Eaton Fuller Model FS6305A

The FS5406A is a five-speed transmission. The five forward gears are synchronized. The transmission is used with engines up to 630 lbs. Ft. torque.