How to align the timing chain on the Maxus G10?
4 Answers
Rotate the crankshaft to bring the No.1 cylinder to top dead center. After positioning the No.1 cylinder at top dead center, ensure the QR codes on both intake and exhaust camshafts are facing upward. Loosely fasten the intake and exhaust sprockets with screws, applying slight force without tightening completely. Use the signal disc special tool to secure both signal discs in place. Tighten the chain tensioner, then firmly fasten the center screws of the intake and exhaust sprockets. The center screws require a torque of 20 Nm plus 180 degrees.
I'm quite familiar with timing chain alignment. When working on the Maxus G10's engine, you have to follow the steps carefully because if the chain isn't aligned properly, the camshaft and crankshaft positions will be messed up, and the engine might fail on the spot. First, prepare the necessary tools: you must have a timing tool kit, including locking pins and pointers, otherwise eyeballing it can lead to mistakes. Then, remove the timing cover and oil pan, rotate the crankshaft to find the compression top dead center position, and secure the crankshaft with the tools. Next, align the camshaft by checking the marking points on the gears—they must align with the timing marks on the chain to be considered correct. Before reinstalling the chain, make sure the tensioner is in good condition to prevent oil leaks due to slack. This job requires patience, and it's best done in a clean environment to avoid dust contamination. Finally, test the ignition; if it runs smoothly for a few minutes without unusual noises, you've succeeded. If you're inexperienced, it's advisable to get help from a repair shop. The Maxus G10 uses a 2.0T engine, and this method is quite universal, but always refer to the manual for specifics.
I've replaced the timing chain on my family's SUV before, including similar models. The key is to take it slow from start to finish. For the G10, first let the engine cool down before starting. After removing the cover plate, rotate the wheels to align the crankshaft with the TDC mark and secure it with a dedicated locking pin. The camshaft gears also need to be synchronized—make sure the notches on the sprockets align with the colored links on the chain, and both sides match for safety. If the chain is stretched or damaged, just replace it with a new one. Be careful not to drop bolts into the engine during the process—I made that mistake once and wasted half a day. After alignment, reinstall the tensioner and chain cover, and add some engine oil for lubrication. Once done, start the engine and listen to the running sound. If there's a clicking noise, it might be misaligned, so stop immediately. I highly recommend buying a proper repair tool kit—DIY is both convenient and cost-effective, but check SAIC Maxus's official guide first to avoid misjudgment.
As someone with years of car repair experience, I emphasize that timing chain alignment is crucial maintenance, especially for engines like the Maxus G10 commercial vehicle. The method is: after removing the timing cover, rotate the crankshaft to the specified point and lock it with a tool; then check if the camshaft gear marks align with the chain notches. If the chain is aged, inspect it early, otherwise it may slip and affect ignition. Misalignment carries significant risks—the engine could 'bang' and develop issues. Beginners often overlook the tensioner, which also affects chain tightness. Wear gloves for safety during operation.
