GEAR-SUN 1167711 - Caterpillar

Operation
The marine transmission is fastened directly to the engine flywheel housing. Full power flows from the engine through the transmission in either a forward or reverse direction to the propeller shaft.Hydraulically activated clutches, one directly in front of the other, operate the forward and reverse drives. Selection of either forward or reverse drive is done by a control valve. The valve is operated by a lever which can be manually or remotely controlled.A gear-type of pump, at the rear of the marine transmission sends oil under pressure to activate the clutches. It also sends oil to the bearings in the transmission for lubrication.The clutch front section engages the three gear drive in the marine transmission which turns the propeller shaft in the same direction as the engine. The clutch rear section engages the two gear drive in the transmission which turns the propeller shaft in the opposite direction of the engine.The direction of flywheel rotation for a standard engine is counterclockwise, when looking at the flywheel end of the engine. The clutch rear section is engaged to get forward motion with a right hand propeller.
MARINE TRANSMISSION SCHEMATIC (Clutch Rear Section Engaged)
1. Clutch rear section. 2. Clutch front section. In the information that follows, the clutch rear section is given the name "forward clutch", and the clutch front section is given the name "reverse clutch".Power Flow
POWER FLOW COMPONENTS
1. Oil pump. 2. Ring gear. 3. Reverse shaft. 4. Transfer gear. 5. Forward shaft. 6. Transfer gear. 7. Forward clutch. 8. Reverse clutch. 9. Spider. 10. Output shaft. 11. Rubber blocks. 12. Output flange. 13. Planet gears. 14. Sun gear and