The function of the device shown in the...

🔍 Key Concepts

• Identify what part of the main engine this device meshes with in the SIDE and TOP views (note the toothed wheel at the far right). • Think about typical uses of an air-driven or hydraulic motor connected through gears to the main engine while the engine is stopped. • Consider when you would want the main engine (and its camshaft) to turn very slowly and safely, and how this device helps with that.

💭 Think About

• Look closely at the gear labeled at the far right in the TOP and SIDE views: does this look more like a braking surface or a drive gear that can mesh/disengage? • The two large cylinders at the top (B and C) suggest stored energy. On a stopped engine in port, what would you most likely use stored pneumatic/hydraulic energy to do? • Ask yourself which choices describe a primary function of the whole assembly, versus side-effects or unrelated functions.

✅ Before You Answer

• Verify whether the small gear on the right side appears to drive the large toothed ring on the engine, or simply press against it to stop it (drive vs. brake). • Check if anything in the illustration shows axial movement of the camshaft itself; if not, reconsider answers that mention sliding camshafts. • Confirm from the FRONT view that this device is mounted to the engine casing near the crankshaft/flywheel area, not directly on the camshaft train (location on engine).

The function of the device shown in the illustration is to __________. See illustration MO-0125.

rotate the camshafts to insure proper lubrication

provide the engine with a braking device

slide the camshafts axially when changing engine rotation

eliminate the need for mechanical interlocks

🔍 Key Concepts

💭 Think About

✅ Before You Answer