How to Remove Crankshaft Bolts with Primitive Methods?
3 Answers
Insert two steel bars into the holes, then use a pry bar to leverage the two steel bars to loosen the bolts. Alternatively, measure the hole distance and weld an F-shaped wrench. Below is an introduction to the crankshaft: 1. Introduction: The crankshaft is the most important component in an engine. It receives the force from the connecting rod and converts it into torque, which is then output through the crankshaft to drive other engine accessories. 2. Function: The crankshaft is subjected to the combined effects of centrifugal force from rotating masses, periodically varying gas inertial forces, and reciprocating inertial forces, causing it to bear bending and torsional loads. 3. Requirements: The crankshaft must have sufficient strength and stiffness, with journal surfaces that are wear-resistant, operate uniformly, and have good balance.
I've worked in old auto repair shops a few times, and there's quite a technique to the makeshift method of removing crankshaft bolts. First, you need a sturdy large wrench paired with a long extension bar as a lever to amplify the force. The bolt might be extremely tight or rusted—don't force it at this point to avoid stripping or breaking the head. Quickly heat the bolt head for a few seconds with a blowtorch or small heat gun; the heat causes the metal to expand and loosen, making it easier to turn with the wrench. Be careful not to overheat surrounding parts to prevent fire hazards or engine damage. Additionally, spraying some penetrating oil beforehand helps with loosening. Overall, this job requires patience and precision—if the bolt is deep-seated, you might need to remove some covers for better access. It's wise to keep a spare bolt handy in case of damage for a quick replacement.
As a DIY enthusiast who often tinkers with cars, I've tried several makeshift methods to remove crankshaft bolts. The first choice is using a large wrench with an extension bar, getting a helper to push the car while leveraging the principle of leverage for easier turning. What if the bolt is rusted stuck? Spray a layer of WD-40 or other penetrating oil, let it soak for a few hours, then lightly tap the wrench handle with a hammer to apply impact force—this can loosen the rust. Always choose the right tool size and avoid cheap, low-quality tools that might break and cause hand injuries. Safety tip: Wear gloves and goggles, and work in a well-ventilated area. If it's too tight, don't force it—pause and check to avoid bigger issues. Regular maintenance can prevent bolts from rusting shut.
