3B2S62310-0 Tohatsu SWIVEL BRACKET

Coupling
Two different types of couplings are used between the engine and the clutch. The type of coupling depends on the engine model.A flexible coupling is used with the G3408 and G3412 Engines. The flexible coupling is constructed of rubber.A torsional coupling is used with G3500 and G3606 Engines. The torsional coupling has leaf springs and the coupling is filled with oil. The combination of these two features helps to reduce torsional vibrations. This reduces stress on the driven components.Clutch
The clutch is a pneumatic drum clutch. The clutch is actuated by air pressure. An inflatable tube is bonded to the outer rim of the clutch. Friction shoes are attached to the inside diameter of the tube. When air pressure is applied into the tube, the tube inflates. This engages the clutch by forcing the friction shoes uniformly against a drum. When the air pressure is reduced, the tube deflates. This disengages the clutch by retracting the friction shoes.Gearbox
The gearbox is a totally enclosed gear drive. The gears are lubricated and cooled by oil. The gearbox has a low speed shaft that is driven by the engine. The rpm is increased by the gearbox. Output from the gearbox is provided by a high speed shaft that drives the compressor.Heat Exchanger
The heat exchanger is made of many thin metal plates that are specially formed. The plates are separated by gaskets. The gaskets align in order to form piping. The plates are bolted together between two thicker outer plates.Engine coolant and water from an external source are pumped through the heat exchanger. The different fluids are distributed on opposite sides of the plates. The fluids move through narrow passages that are formed in a pattern on the plates. Heat from the engine coolant is transferred through the plates to the cooling water. The engine coolant and the water are recirculated.Weights of Components
Table 1 lists the approximate weights of the heat exchangers, clutches, and gearboxes. The weights of the components for G3606 Engines are not included in the Table. G3606 Chiller Drivelines are custom products. The weights of the components can be provided.
Table 1
Approximate Weights of Chiller Driveline Components    
Engine Model     Heat Exchanger     Clutch     Gearbox    
G3408    
220 kg (484 lb)    
151 kg (332 lb)    
477 kg (1050 lb)    
G3412    
220 kg (484 lb)    
197 kg (435 lb)    
477 kg (1050 lb)    
G3508    
443 kg (975 lb)    
325 kg (715 lb)    
999 kg (2200 lb)    
G3512    
552 kg (1215 lb)    
331 kg (730 lb)    
999 kg (2200 lb)    
G3516    
558 kg (1230 lb)    
331 kg (730 lb)    
999 kg (2200 lb)    Package Weights
Table 2 lists the approximate weights of the Chiller Packages. The weights of the packages with fluids and without fluids are listed. The weights of the components for G3606 Chiller Packages are not included in the Table. G3606 Chiller Packages are built to order. The weights of the packages can be provided.
Table 2
Approximate Weights of Chiller Packages    
Engine Model     Weight Without Fluids     Weight With Fluids    
G3408    
9334 kg (20,560 lb)    
9561 kg (21,060 lb)    
G3412    
9988 kg (22,000 lb)    
10 260 kg (22,600 lb)    
G3508    
17 406 kg (38,340 lb)    
17 951 kg (39,540 lb)    
G3512    
19 477 kg (42,900 lb)    
20 203 kg (44,500 lb)    
G3516    
21 429 kg (47,200 lb)    
22 337 kg (49,200 lb)