How to Install a Belt?
2 Answers
The method for installing a belt is as follows: 1. Align the ignition marks of the crankshaft and camshaft; 2. Place the belt on the crankshaft pulley and smoothly guide it upwards from the side opposite the tensioner pulley to place it on the camshaft pulley; 3. Then fold the belt into the side of the tensioner pulley and tighten the tensioner. The belt is an important component of the engine's valve timing system, ensuring accurate intake and exhaust timing by connecting to the crankshaft and matching a specific transmission ratio. Steps for replacing the belt: 1. Lift the car with a jack; 2. Remove the engine undercover; 3. After removing the undercover, the generator belt will be visible; 4. Remove the exposed old generator belt; 5. Install the new engine belt. Situations requiring belt replacement: 1. Abnormal belt wear; 2. Belt folding failure; 3. Belt impact load.
As an experienced DIY car owner who has replaced the alternator belt several times, I'd like to share some tips. Before installation, always disconnect the negative battery terminal to prevent accidental starting - this is crucial! Then locate the tensioner pulley, loosen the tensioner bolt with a wrench to remove the old belt. When installing the new belt, strictly follow the routing diagram in the manual, ensuring the arrow on the belt faces the crankshaft rotation direction. Last time I forgot to clean oil residue from the pulley grooves, causing the new belt to slip and squeal, wasting over 300 RMB. After installation, check tension by pressing the belt midpoint with your thumb - 6-10mm deflection is ideal; too tight damages bearings, too loose causes slippage. Finally, remember to test-run the engine for five minutes, listening for any hissing friction sounds. I recommend checking the water pump and A/C compressor pulley conditions too - these details determine belt lifespan.
