Crankshaft : This is a vital part of your vehicle’s engine. The crankshaft is designed to rotate your flywheel after your pistons and rods take explosions of gasoline or diesel and convert it into useful power. The power of the engine is pushed out through your crankshaft and is then used by your pulley systems for alternator, water pump, ac compressor, power steering pumps and other belt devices. Other systems may include timing chain or timing belt controlled parts such as camshafts, water pumps, oil pumps and other mechanical engine parts. The flywheel is also rotated which delivers lots of horsepower to your transmission to move your car, truck, van or suv.
Crankshafts are made of hardened steel or cast iron. Some crankshafts are treated with nitrates for strength. A crankshaft can break causing major internal engine failure or be damaged by a faulty piston, piston rod, pulley, pulley bolt, timing sprocket or flywheel. Over revving an engine or a bad casting can contribute to a crankshaft failure.
When a crankshaft is bad or damaged, the engine should either be replaced or rebuilt. A crankshaft can be re-machined in many cases if the specifications are still in range. A machine shop can usually machine a crankshaft by welding and re-machining the crankshaft back to specifications. Other crankshafts are not able to be re-machined and must be replaced.
Some crankshafts are internally balanced or externally balanced. Internally balanced crankshafts have been balanced by a machine in the factory by drilling holes in specific places on the crankshaft. Other crankshafts require a harmonic balancer or a weighted flywheel for balancing. Diagnosing a crankshaft problem requires a qualified auto mechanic that understands the fundamentals of an engine. Need your crankshaft or engine repaired or replaced? Make an appointment with Guy’s Automotive today for all of your engine or crankshaft needs.