How to Remove the Crankshaft Bolt on a Teana?
2 Answers
The crankshaft bolt on a Teana can be removed using specialized tools. Below are the steps for engine crankshaft removal: 1. Loosen the main bearing cap bolts; 2. Use a socket wrench to remove the main bearing cap bolts; 3. Loosen the main bearing cap with a flathead screwdriver; 4. Pry up the main bearing cap and remove it; 5. The engine crankshaft removal is complete. The following are the functions of the crankcase: 1. The crankcase is the most important component in the engine. It bears the force transmitted by the connecting rod and converts it into torque, which is then output through the crankshaft to drive other engine accessories; 2. The crankcase is subjected to centrifugal force from rotating masses, periodic gas inertial forces, and reciprocating inertial forces, causing the crankshaft to bear bending and torsional loads; 3. Prevents engine oil from deteriorating; prevents leakage from the crankshaft oil seal and crankcase gasket.
Removing the Altima crankshaft bolts requires special attention to the method. First, ensure the engine has cooled to room temperature, as hot components are prone to deformation. Disconnect the battery negative terminal to prevent short circuits. Then remove the pulley and any obstructing components. Use a large-size socket wrench matching the bolt head and spray WD-40 lubricant, waiting 10 minutes for penetration. When loosening the bolts, apply even counterclockwise force—avoid using an impact wrench to prevent thread damage. For stubborn bolts, gently tap the bolt head or carefully apply heat with a heat gun. After removal, clean the threaded holes and crankshaft surface to remove debris. Before installing new bolts, apply thread locker and tighten to Nissan’s specified torque (approx. 100-120 Nm). Since the crankshaft is an engine core component, DIY attempts risk errors—professional repair is recommended. I’ve seen cases where uneven force caused bolts to snap inside, costing thousands to fix. Safety first—don’t cut corners.
