Using the diagram below, thnx to vfaq and a ruler, put all of the bolts back into their place and using your hands just tighten them for now. He has been a Technical Lead with expertise managing and mentoring small development groups. Using a cutoff wheel tool cut the shaft after the 2nd polished surface starting from where the sprocket sits of the shaft or as shown on the picture. So yeah not going to be one of those idiots having to bring a jacked up non running car to the pros to fix. I have a 1972 chevy pick-up with a straight six that makes 200hp. The repair involves removal of the engine, oil pans and front cover and all cam actuators, we replace the balance shaft or idler gear, the chain, any worn guides, the sheet metal pan if bent, the oil pump, the oil level sensor, and all parts supplied in the kit.
Put the shaft into a vice and tap down the same hole you took the bolt out for the gear using an 8mm tap all the way down. This is by far one of the models, including E25, E30, and E35. Jim: Pull the stored codes. Consider chain and sprocket wear fitted parts, if either are worn replace them both. Install the tensioner with the 27mm nut with the Allen nut not installed yet, torque in place. I'm guessing the fix was good? The 272 balance shaft repair is not a very user freindly job due to the design of the engine.
If you replace the chain check the sprockets, and if blunted or rounded they should also be replaced. On an interference engine loss of the chain is loss of the engine in many cases, unless it occurs at low engine speeds. Another one will come up that fits the bill and has had the repair done. You need a dependable shop that has the right know-how in order to fix the problem and make the necessary repairs. So it wears down to nothing over time, shitting metal particles in the engine as it wears.
The cat is out of the bag and people know to avoid these cars. The black dot on the stubby between the 2 polished surfaces is on of the oiling holes, and although the picture doesn't show, the new bolt's thread is covering the hole and actually going almost to the and of the new stubby shaft. 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. In fact, since this is the most common problem with certain Mercedes-Benz models, it is more than likely that an experienced car repair shop will have seen it and dealt with it on numerous occasions. There was even a class action lawsuit filed against the car company, which claimed that Mercedes-Benz was making the engines on these models with defective gears, according to of Law360. For the length of the bolts, all of mine were actually 5mm shorter than listed in the diagram, yours may vary, but I'm guessing they'll be 5mm shorter as well.
Do the same for the front bearing. I got intake cam sensor codes for both cylinder banks though, which makes me think it might be more than just the sensors. Just minor stuff nothing like the Ml350 M272. This is a problem that will start to affect more of these engines as they age. Experienced mechanics recommend getting the balance shaft gears checked with every when you hit over 50,000 miles.
No, we do not hand out car sponsorships. It may require two revolutions of the crank to get the lines in a position where they can be checked. And the engine should not run rough. Now insert the spring and spacer, compress the spring, with the Allen nut. You can use a rotating tool on the block because it is cast iron, but the oil-pump cover's aluminum is very soft, so be very careful.
Take the shaft to the table grinder, and as you did before, take out all of the rough edges from the cut surface. The rear bearing of the rear balance shaft oil-pump assembly does not need to be touched since it has no oiling holes, but for the sake of safety, run your finger on the inside of it, and make sure you feel no hole, if there is one, rotate the bearing as was explained above, but there really shouldn't be one Now, put the stubby in the block, place the new gasket on the block make sure the holes in the block align to the holes in the block as well as the oil routes , and place the oil-pump cover onto the block. Hi-Line says it is possible to inspect the linkage to see if it is damaged before a check engine light comes on and suggests doing so when the car is in for service. I wouldn't waste too much money on Carfax, or if you do, take their report with a gain of salt. Solution and Prevention The problem with all effected vehicles — they are now out of warranty. Take it to a table grinder and take off any shaft edges off the cut surface.
If I have the balance shaft issue and they don't cover it for me, I can safely say I'll never buy a Benz again. If it isn't you might have code relative to the timing being off beyond a specified limit in the engine software. We have seen some early M271 engines with broken chains, these are single row chains. Some tensioners particularly on the newer engines after 2005 are disposable one use parts. So if you can't do the work yourself, its scrap, or part it out on ebay.
This problems can appear with the balance shaft gears affect up to 10% of Mercedes equipped with the M272 engine from 2004-2008. Our warranty is 3 year 36,000 miles nationwide. Mine was siezed up a little once I torqued everything down, so I used a bit of forced to get it unseized. At first the only indication will be a check engine light with one or more of the following fault codes. The cat is out of the bag and people know to avoid these cars.
The intake manifold is just one example. Use some grease on the oil-pump gears so that they're nice and lubed when the engine is started. The dealer wants about 5K. So if you can't do the work yourself, its scrap, or part it out on ebay. The Most Common Problem with Mercedes-Benz Engines Unfortunately, it is the balance shaft gears that show up with glitches for most Mercedes-Benz E-class models with the M272 engine built during the period of 2004-2008. Just did the repair on mine -- You can see the broken plastic in the center. I'm looking at a 2006 C230 with the M272 engine with 170,000 miles on it and I've heard this engine has a problem with the balance shaft gears.