Complete disassembly and assembly manual for CAT 3116 and 3126 engines. 

For use with engine serial number prefixes: 

• 8WL1-Up (engine)
• 1WM1-Up (engine)
• 4ES1-Up (engine)
• 2CW1-Up (engine)
• 8HW1-Up (engine)
• 7LZ1-Up (engine)