Which of the following is NOT part of the Power Unit Assembly?

• A. Diesel Engine
• B. Fluid Coupling
• C. Power Take Off Clutch Assembly (PTO)
• D. Hydraulic Filter

Answer: (D)

The Power Unit Assembly is the engine-driven package that provides mechanical power to the system. It includes the diesel engine as the energy source, the fluid coupling to transmit power smoothly, and the Power Take Off Clutch Assembly to drive additional components. The hydraulic filter, while essential to keep hydraulic fluid clean and protect pumps and actuators, belongs to the hydraulic system rather than the power unit itself. It operates downstream of the power unit, filtering fluid used by the hydraulic components, not part of the power-delivery assembly.