ENVIOclev Posted August 19 Share Posted August 19 Hello everyone, I own a 2012 BMW 520D GT F07. The automobile underwent turbo replacement at the garage and is now malfunctioning. Received a communication from the garage stating: The flywheel ring gear has become detached from the torque converter located within the gearbox bell housing. To resolve this problem, the gearbox will need to be removed and a new starting motor installed. Although I lack expertise in mechanics, I am seeking someone who can provide a simplified explanation. Today, I visited a technician who had limited proficiency in English. Despite the language barrier, I showed him a video of the issue. He accurately identified the problem and recommended replacing the flywheel as a solution. Is a starting motor the only additional component I need? What is the function of a torque converter? Thank you for any assistance. Quote Link to comment Share on other sites More sharing options...
nickoyster4 Posted August 19 Share Posted August 19 The torque converter is detached from the flywheel and secured by four bolts, which can be accessible by removing the starter. By undoing these nuts, the torque converter may be separated from the flywheel. What is the car's mileage? If the mileage of the vehicle is beyond 100,000, I would recommend replacing the timing chain together with the task mentioned. The majority of the cost is attributed to the effort involved, particularly in reaching the flywheel. Quote Link to comment Share on other sites More sharing options...
nickoyster4 Posted August 19 Share Posted August 19 https://www.ebay.co.uk/itm/145909020240?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=zlIeNJcKTWC&sssrc=4429486&ssuid=eVPsP3o3TNu&var=&widget_ver=artemis&media=COPY&mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338774556&toolid=10001&customid=130832X1595858X04617a6f46217d738dfb8cf644ba0ca2 Quote Link to comment Share on other sites More sharing options...
nickoyster4 Posted August 19 Share Posted August 19 The flywheel in an automobile is equipped with a ring gear, and it is secured to the torque converter using four bolt holes. It is really odd that it suddenly stopped working, especially if it was functioning well before it went into the garage. Do not buy this flywheel since it is intended for early 5 series cars and may not be compatible. I have provided a link to visually demonstrate its appearance. Quote Link to comment Share on other sites More sharing options...
ENVIOclev Posted August 19 Author Share Posted August 19 Thank you for your response. I drove the car to the garage, which was around 12 miles away, without any issues except for the loud noise coming from the engine. The noise was there when driving, but particularly noticeable while the car was stopped. I had to wait for 30 minutes with the engine off since the garage was not open yet. However, when I switched the vehicle on, there were no issues. Received a phone call thereafter detailing the many issues with the phone. Instructed the caller to communicate the issues via message. The following day, when retrieving the phone, I was informed that it failed to start when the caller attempted to move it after our departure, necessitating the use of a ramp to push it. The automobile now has an odometer reading of 144,000 miles, and I have driven around 12,000 miles since acquiring it. I have discovered a flywheel available for purchase on eBay. I would want to confirm if the flywheel, in conjunction with a starting motor, is sufficient for my needs, or whether a torque converter is also required. I believe the timing chain was replaced some time ago, but I am unable to locate the accompanying documentation. However, I do own it someplace. Thank you. Quote Link to comment Share on other sites More sharing options...
nickoyster4 Posted August 19 Share Posted August 19 A temperature controller (TC) is not necessary, and it is uncertain whether a starter is required. Have they confirmed that it is in a damaged condition? If you have a record of the chain's history, there is no need to consider it while the flywheel is being completed. Quote Link to comment Share on other sites More sharing options...
ENVIOclev Posted August 19 Author Share Posted August 19 The teeth on the starting motor have sustained damage. I own a video that was sent to me by the garage. How can I upload a video from my mobile device? Quote Link to comment Share on other sites More sharing options...
nickoyster4 Posted August 19 Share Posted August 19 You must upload the content to a platform such as YouTube and provide a hyperlink. The failure of a starter is not a catastrophic event. I managed to get a well-functioning, pre-owned starter for a mere £30 earlier this week. Quote Link to comment Share on other sites More sharing options...
ENVIOclev Posted August 19 Author Share Posted August 19 there’s the video they sent me Quote Link to comment Share on other sites More sharing options...
ENVIOclev Posted August 19 Author Share Posted August 19 Flywheel Quote Link to comment Share on other sites More sharing options...
nickoyster4 Posted August 19 Share Posted August 19 Based on the appearance, it seems that the rivets have failed. In the past, I have seen that they are often soldered in place instead of removing the gearbox to replace the flywheel. Quote Link to comment Share on other sites More sharing options...
Needsnewtyres2 Posted August 19 Share Posted August 19 Although nickoyster4, we would be willing to do it, they are motivated by the work and the monetary compensation. The condition of the starter seems OK to me, but, if you are installing a new flywheel, it would be prudent to replace the starter as well. Quote Link to comment Share on other sites More sharing options...
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