Step 5: Using the rubber mallet, tap the balance shaft until the bushing is sticking to its socket. The problem with these parts is that during manufacturing, the gears were not hardened properly and after exposure to heat and wear and tear, the gear teeth wear down excessively. Too complex for production you say? This information is only a summary. If a part fails, the original purchaser is able to return that part at any time for replacement. If you need to replace your balance shaft, this kit is the answer, as the rear counterweight must be replaced at the same time as the balance shaft. This presses the chain against the tensioner releasing it, as you rotate the engine clockwise from that point the tensioner will advance until the chain is properly tensioned.
As time and miles go by, the gears will wear more and more and the engine will develop a rattle noise from the front cover area of the engine. ? Step 4: Apply some motor oil to the replacement shift bushing. Or maybe it's a cynical exercise to encourage people to switch their cars sooner. After a certain point there is too much metal that has been deposited in the engine and the cylinder head camshaft bearing journals will get scored and the engine will need to be replaced so it is a good idea to get this repaired soon after the first warning which is the check engine light with fault codes P0016 and P0017. Modern timing chains can be expected to last the life of the engines if all the parts are manufactured correctly. The auspicious three pointed star symbolizing dominance over land, sea and air was a portent of Mercedes Benz's sweeping success as an automotive manufacturer. That's how it has gotten to be with the eralier smart fortwos - advertising the car with a rebuilt engine commands a higher price than one without a rebuild which is assumed will fail.
If you're using a debit card we suggest you switch to a credit card. The M112 and M113 engines built between 1999 and 2005 have been very reliable with respect to timing chains and in general. Know the type and design of the tensioner you are working with as this step is critical to having a successful repair. Has this become a regular enough occurence to alter secondhand prices re had remedial work done vs not had remedial work done? Or they could cover it and absolutely guarantee a customer for life. Basically, this automotive kit has all the essential components needed to make a successful installation of a new balance shaft.
Posts of this nature will be removed. I guess as time goes on the computer simulations will get better at identifying failures. Wow that was quick Cole thanks for getting back to me chap much appreciated. I picked up a 07 C280 that is throwing codes that make me think I might have this balance shaft problem. Balance shaft gear problems are most typical among V6 piston engines, primarily the Mercedes M272 in models manufactured between the years 2004-2008.
It's great when some one takes the time to be so informative. What happened to ''The best or nothing''? That's how it has gotten to be with the eralier smart fortwos - advertising the car with a rebuilt engine commands a higher price than one without a rebuild which is assumed will fail. The M272 and M273 engine introduced in 2006 have had problems with the timing resulting from a worn balance shaft sprocket M272 or timing chain idler gear on the M273. So, avoid the earlier engines with the balancer shaft problem and the engine appears robust and reliable. Regardless, you need to take up the chain slack to get a valid measurement so always only rotate in the direction of normal engine rotation. Driving a can be detrimental to your engine and should be avoided until the issue is resolved.
Unfortunately, due to wear and tear, the balance assembly eventually breaks. Further, the code for mine was on the exhaust cam - I would assume given that the timing chain only directly drives the intake cams they would throw codes first, not a single exhaust cam. I'm having a shop do the actual swap, but I was very tempted to do it myself. Only thing I've noticed is its not as quiet as it once was. It is important to note that the costs will likely only be covered for specific Mercedes models and years. Connect it to the balance shaft then continuously wind its bolts until the shaft can be pulled free.
If this issue is not fixed, it can lead to costly engine damage if the timing chain jumps. Once the shaft is secured, put the balance shaft gear back using the wrench. The item must be new and in its original manufacturer packaging to be eligible for a cash refund. . I had a cam code recently and when I took it in they found no available coverage for any issues beyond my brake booster and my fuel system. They are released by turning the engine backwards at a specified torque while holding the right exhaust camshaft fixed. The M112 would probably have been a more satisfactory engine by all accounts.
Anything less is a fudge. Still Learning - Thanks for the in depth write-up. Installing an offset woodruff key in the crank sprocket is one solution for small corrections if you are building an vintage motor, but for anything more than a several degrees replace the chain. I mean effectively it seems to be just a ticking time bomb waiting for it to eat the timing gear and be rendered unusable. To protect your engine components from excessive wear and tear, you need to equip your ride with a brand new balance shaft. It is expensive to rectify. I found this bulletin interesting: You can clearly see the wear on the gear on page 3.
Needless to say, its function is important in maintaining the excellent condition of your engine components. Know the correct procedure as the M272 and M273 valve covers are bonded on and the timing is checked with the four cam sensor removed and the engine rotated until all 4 stamped circles on the pulse wheels are centered in the holes at a specific crank angle. I think it may be going back to my local indie, such a pain you guys are so far from me Any idea of a ball park sort of cost area I'm looking at for tappets replaced? It is revvy and smooth. Sorry about the rant - in answer to your original question avoid any pre 2008 350 petrol engine. Wow that was quick Cole thanks for getting back to me chap much appreciated. To schedule an appointment to Service your Mercedes Benz with Foreign MotorWorks please contact us today.
If it fails to function properly, you need to make the necessary replacement as soon as possible. Could it be the second one down engines up to 2729. Check engine light just came on and from what I have found it can go from simply replacing the camshaft sensor to replacing the balance shaft, and I'm kinda freaking out. The 7G-tronic box is able to change down 2-ratios at a time, so almost instant acceleration is always possible. That, and you get the benefit of the repair sooner, read: peace of mind. I appreciate it's difficult to comment without hearing the noise but the only thing I can liken it to is it sounds like a quiet diesel on tickover? But a stock trans on a tuned -65 won't last long.