How to align the timing chain on the Roewe 350?
2 Answers
The method for aligning the timing chain on the Roewe 350: 1. Locate the position where all four pistons are parallel. Near the lower right of the exhaust manifold where the engine connects to the transmission, there is a small hole blocked by a white plastic plug; 2. Remove the plug and insert an L-shaped metal rod of similar size into the hole, which should pass through a corresponding hole on the flywheel; 3. Remove the transmission to reveal holes on each of the camshafts; 4. After aligning the hole on the flywheel with the hole on the engine, ensure that the two holes are vertically aligned; 5. Tighten the two previously loosened camshaft gears. The Roewe 350 is a compact sedan positioned in the A-segment market, launched by SAIC Motor following the Roewe 750 and Roewe 550. Equipped with an intelligent internet-based driving system that utilizes China Unicom's WCDMA 3G network, it enables functions such as information retrieval, real-time traffic navigation, electronic travel logs, stock trading, and social community interactions, ushering in the era of internet-connected automotive information technology.
I've worked on many cars including the Roewe 350, and the key to timing chain alignment is ensuring the crankshaft and camshaft marks are properly aligned. First, rotate the engine to the top dead center (TDC) position of cylinder number one, usually by checking the scale line on the flywheel or the mark on the crankshaft pulley. The camshaft gear will have a small notch or arrow, and the chain typically has a copper-colored link or raised mark that needs to match these points. During the operation, remove the tensioner to release the chain tension, align the marks, and then re-tension the tensioner. Don't rush—use a manual wrench to slowly turn the crankshaft to avoid reversing. After completion, start the engine and listen for any unusual noises. Misalignment of the chain can easily cause valve and piston collision, damaging the engine. It's recommended to consult the manufacturer's repair manual for specific mark locations, as details vary for each engine model. Use professional tools to secure positions when necessary, and regular maintenance can prevent chain stretching and deformation, avoiding potential issues.
