Caterpillar Maintenance Manual for D4 Track-Type Tractor. Manufactured by Caterpillar in September 1983.
Lubrication and Maintenance Manual for D4 Tractor Power Shift. Manufactured by Caterpillar in June 1974.
Caterpillar Testing and Adjustment for 141 and 143 Hydraulic Control.
Disassembly and Assembly Manual for D4D Tractor Engine. Manufactured by Caterpillar in May 1974.
Caterpillar Disassembly and Assembly Manual for D4D Tractor Power Train. Manufactured by Caterpillar in May 1974
This maintenance manual is for the Caterpillar D6C Tractor Direct Drive.

