Doosan G643 LP Engine — Doosan G643 LP Engine User Manual

Coolant Pump Installation Install or Connect 1 . Install gasket to block 2 . Install pump to location. 3 . Assemble bolts to pump and toque to: 40 N·m (30 lb·ft.) 4 . Assemble pulley to pump. 5 . Assemble bolts to pulley and torque to 25 N·m ± 6 (18.0 ± 4.5 lb·ft.) Engine Accessory Installation Install the engine accessories (distributor, oil filter, generator, etc.). Connect all vacuum hoses and electrical equipment the same way as removed. Engine Setup and Testing After overhaul, turn the engine over manually and inspect for any unusual noises or evidence that parts are binding. If parts are binding disassemble engine to determine the source. 1 .

Install oil filter (if not already installed). 2 . Fill the crankcase with the proper quantity and grade of engine oil. IMPORTANT: If a new camshaft or hydraulic lifters were installed, add Engine Oil Supplement GM P/N 1052367 (or equivalent) to the engine oil. 3 . Fill the cooling system with the proper quantity and grade of coolant. 4 . Crank the engine several times. Listen for anyunusual noises or evidence that parts are binding. 5 . Refer to “Specifications” for ignition timing adjustment. 6 . Start the engine and listen for unusual noises. 7 . Run the engine at about 1000 RPM until it is at operating temperature. 8 . Listen for sticking lifters and other unusual noises. 9 .

Check for oil and coolant leaks while the engine is running. G643 (E) Service Manual Chapter 3. Engine Mechanical System 109