The sound deadening foam sits atop the engine, and under the plastic cover matches the top of the engine, which means that when it is sitting in the right spot, it should be relatively flat. The real issue is if the timing chain skips a tooth and goes out of time and valves meet cylinder and then bye bye engine. The cost will get higher if you have to buy any of the other tools needed for the job. The lower plugs get tightened to 50 N m, using the same 8mm hex or Allen socket. A plastic trim removal tool can be used to help pry the valve cover off of the cylinder head. To prevent the solenoids from getting damaged, use an E7 socket, and remove the two bolts that hold each of them into the valve cover. Like you alluded to, it sort of seems like a chicken or the egg sort of debate. The n20 engine when the cam lobes come to a rest vertically to the valves (very rare instance) they will rotate back slightly and cause slack in the chain Since the n20/n26 variants use a hydraulically actuated tensioner the chain will be taught or very tight only after the engine has warmed up to operating temperatures" Make sure the chain is seated properly in the teeth of the sprocket. The engine timing chain is very weak - it stretches over time, and ultimately snaps . NumberOfItems: 4 Place the bolt on the tool through the hole in the baffle plate and brace the other end under the oil pickup. The timing chain guide was reportedly redesigned about January 2015 for this engine and is expected to reduce or eliminate the problem. Posted on August 7, 2016 by bmwtechnician. The biggest piece of the CTA balance shaft tool is used to lock the oil pump in place so that the sprocket bolt can be removed. I've got to figure there's a reason why they changed it. If the chain breaks the guide while it itself is breaking, then it's effectively impossible to tell which part really failed. Genuine and OEM Replacement Car Parts Online | BMW Volvo Audi VW . Unlike a timing belt which is a toothed high-quality belt made of rubber that runs outside of the engine; a timing chain is made of metal and runs inside the engine as it needs to be . The timing chain appears to be the number one fault on the N20, however, this issue is mostly prevalent on engines and vehicles produced prior to 2015. The chain tensioner is malfunctioning due to low oil pressure. A flat-blade screwdriver can help push the tab in while you pull on the plug. There are three bolts holding the oil pump drive assembly into the engine. Thread the new bolt supplied in the timing chain kit into the crankshaft and tighten it with a 22mm socket. In the middle of nowhere without cell service? Along with this, there's an extended warranty for the issue. Take the brace and cowl cover, and set them onto their mounting points. In January 2015, BMW redesigned the timing chain components, which seems to have significantly reduced the chance of failure. Feed the assembly up through the bottom on the engine and fit the balance shaft gear onto the balance shaft. Using a 24mm socket, remove the camshaft sprocket nuts. Grab the valve cover by one of the camshaft solenoid holes and by where the vacuum pump sits at the back, and rock the cover back and forth until it is freed. I'm at 89k with no issues on my 2013. It's a new year, and that means new inventory. Each piece will slot into the middle cowl piece first, and then three plastic locks can be twisted into place with a 10mm socket. Then place the rubber hood seal onto the brace with the rounded edge facing upward and run the cable through the lips on the front. Next, slide the wastegate actuator through its mounting bracket and secure it with its three 10mm nuts. Place the wiper arms on the studs and tighten down the nuts with a 16mm socket. Next, fit the new oil pan seal into the channel in the oil pan. For those capable or bold enough to take on this job, there is a lot of monetary savings to be had. One the passengers side of the engine block, where the wastegate actuator sat, is the timing chain tensioner. Thread the smallest cap into the hole just under the driver's side camshaft. Use these marks to make sure everything lines up after the engine turns over. It will plug into the bracket on the ignition harness, and the ignition harness will run under the boost line going from the wastegate actuator to the boost solenoid. } WHEN the guide breaks, the timing chain begins to stretch. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Missing something during reassembly will only cost more time and headaches. At this point, you can start the car. Get help answering any questions you have. However, there are some gems out there that won't break the bank. Back at the front of the valve cover, use a flat-head screwdriver to push out on the tab and release the electrical connection for the camshafts. Next, grab the large green CTA timing tool and set it in front of the camshafts. For BMW - N20 / N26 alignment Pin, For BMW - N40 | N42 | N45 | N46 | N52 | N55 | N62 chain tensioner. The good news is that BMW recognized the timing chain components in the N20 and N26 engines were prone to failure. It also features dual VANOS, valvetronic, and direct injection. }); The crankshaft pulley mount sits on the snout of the crankshaft and helps to align the chains in the engine. Torque the plug to 25 N m using an 8mm hex or Allen socket. Instagram: rjd_f30 | Current: EBII 2013 335i 6MT RWD & Sprint Blue 2008 Audi RS4 | Retired: 2013 328i, 2000 XTerra, 2022 Civic Si |. There are two long bolts supplied with the tool. Pull up on it to remove it from the engine. December 12, 2020 A BMW timing chain lawsuit settlement has been reached over vehicles equipped with N20 and N26 direct injection turbocharged engines that can fail. 306 0 obj <>/Filter/FlateDecode/ID[<4086C04AEFF7314F821FD5E39C58A39D><94502FE68810844CBC30640B30230328>]/Index[287 34]/Info 286 0 R/Length 100/Prev 694800/Root 288 0 R/Size 321/Type/XRef/W[1 3 1]>>stream Sit the pump-to-rail feed line in its clip and start threading in the two mounting bolts. // Settings, Please back up before changing. The issue is still fairly rare, and it's not too terribly likely you'll be affected. And I assume "newer is better." These 5 come in under $10,000. The dealer will charge you between 10-15 hours to complete the job. The timing chain guides, as their name suggests, keep the chain on its proper path at the proper tension. Also, have the new tensioner within reach once the tool is removed. Jack the car up and place it on jack stands. Buying a cheap European luxury car can be intimidating. Use a 24mm socket to tighten the cam adjusters to 55 N m, plus another 55 of rotation. As you thread the tool out, watch the chain guide move. This harness will swing around the front of the engine, with its bracket clipping onto the valve cover on either side of the high-pressure fuel pump. The issue isn't so much of a tensioner issuer as it is the guide itself. When it comes to the BMW N20 timing chain, this means expensive and lengthy services to prevent a ruined engine. There are two flats machined into the back of the camshaft that correspond with the drive on the vacuum pump. BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST, N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications, https://www.newtis.info/tisv2/a/en/fshaft/HtiBPV3K, https://www.newtis.info/tisv2/a/en/fshaft/HipcnQuO, https://bmwtechnician.com/2016/08/07g-chain-issue/, https://www.carcomplaints.com/news/2g-chains.shtml. For a better experience, please enable JavaScript in your browser before proceeding. // end settings. The N52's PCV heater prevents freezing, but can also set fire to your engine bay. The guides are essentially a regular 75k mile maintenance item on those engines, while on our cars it's not a guaranteed failure. On the drivers side of the transmission, there is a 5mm hex bolt. Labor: $957 to $1,207. If a chain stretches enough, it can come loose on one of the sprockets causing it to jump off of the sprocket. All of the gaskets go on one way, so be sure that they are all in the proper orientation. Use a T40 bit socket to tighten down the bolts. However, there are some gems out there that won't break the bank. Rotate the crankshaft until the piston is at the top of its stroke, meaning the rod is pushed out as far as it will go, and neither camshaft is opening valves on the first cylinder. Use the straight sections in the seal to determine where it should sit in the pan. Use a? Bringing the BMW community together. A lobe on the exhaust camshaft interacts with the high-pressure fuel pump to send fuel into the engine. }); }); Timing chain BMW bulletin. I'm personally going to just keep checking until my CPO is up in 11k. Posted on August 2, 2017 by bmwtechnician. Engines are built to tight tolerances, and a worn chain will put the internal parts outside of those tolerances. The Cheapest, Most Reliable Mercedes-AMG Cars Ever, Period! Have fun with that install haha. Chain tensioner or guide problems: The chain relies on guides and tensioners to stay in place and work properly. The right and left side guides get attached near the bottom of each other. Step 15: Install the camshaft timing adjusters, boost control solenoid, and vacuum pump, Step 17: Install the backside wiring harness, Step 18: Refit the ignition and fuel injector harness, Step 21: Reinstall the cowl brace and trim, Step 22: Install the engine foam and cover. Pull the wiring out of the rubber seal just forward of the cowl and pull the seal off the strut brace. Use an E12 socket to torque them to 9 N m. To be extra careful, tighten them all halfway before starting the pattern over again and setting the final torque value. As it stretches, the chain gains play, allowing it to move around inside the timing cover. Then pull the balance shaft locking tool out from the oil pickup. That will be the transmission disengaging from park and going into neutral. If it fails, the timing chain . With the engine filled with oil, refit the negative cable onto the battery, but don't tighten it down. Which broke first, the chain or the guide? Youll need to reach up on the passengers side of the transmission with a hook or pick tool and pull the plug out. Slide the engine cover over the foam and into the two slots at the back of the engine. Pinch them together and then rotate the left-side guide back to its vertical position to lock them together. Install the two E8 bolts first and then move to the T40 guide pin at the top of the right-side guide, followed by the two T45 guide pins just above the crankshaft. #1 -Timing chain #2 -Chain tensioner and guide rail #3 -Slide rail #4 -Sprocket #5 -Chain tensioner with seal Part Number Description Quantity 11 41 7 605 366 Chain Drive 1 11 31 8 648 732 Timing chain 1 11 31 7 592 877 Chain tensioner and guide rail 1 @import url("/site/css/styles-bryson-2023-03-06.css"); Reinstall the timing chain guide pin plugs to prevent oil from leaking out of the engine once it is back together. Appreciate the heads up. BMW petrol engine rebuild & timing chain repair various models from 2001 thru 2015 - engine codes N20, N42, N43 . BMW N20 N26 Balance Shaft Seal Tool Kit - CTA 7676, BMW SI B11 09 15 Technical Bulletin - The Importance Of Priming The N55 Oil System, BMW 22V-119 Recall: Stop Your BMW N52 Engine From Catching Fire, BMW N55 Water Pump Ground Bolt Replacement - Do It Before You're Left Stranded, 2023 FCP Euro Winter Kit Sale: Our Experts' Favorite Kits, 5 Of The Best Used European Luxury Cars To Buy Under $10,000, 5 Of The Most Notable European Tuning House Conversions, European Cross-Plane V8 Engines You Should Know About. If i SAW ANY TENSIONER PIECES, I'd put a new chain and guides, there is a TSB from bmw that shows to replace these guides and chain for vehicle made before 03/2013 . Once it is nearly in place, hold the assembly against the block with one hand, while threading in one of the center bolts with the other hand. Free shipping. Application : Applicable to BMW N20 and N26 engines (4 Cylinder Turbo), see more details for below description ; Package Include: 1x Camshaft Locking Tool ,1x Camshaft fixating base Tool ,1x Alignment Pin ,1x Chain Tensioner Use a socket to remove them and set the brace aside. On these two motors, the N20 and N26 Timing Chain . Feel around on the back of the camshaft to get an idea of where the flats are positioned, and spin the drive on the pump to match that. Have a drain pan at the ready and remove the drain plug. If you're interested in more DIYs for your BMW, you can visitbmw.fcpeuro.comandsubscribeto our YouTube channel. Then, use a 5mm hex socket or Allen wrench and turn the eight fasteners on the cowl 90 to the left. The timing chain guides, as their name suggests, keep the chain on its proper path at the proper tension. Take the accessory belt and seat it onto the vibration dampener. Manufacturers will only go so far for a customer. A lot of those engines see completely cracked guides or pieces broken off that caused it to skip. According to BMWs statement on it and reports of those with bricked engines, it appears to be the plastic guide wearing down too quickly leading to slack and eventually skipping a tooth. Two of those bolts look slightly different and have specific locations as they thread into the crankcase. Eventually it breaks, taking your whole engine with it. Listen to the noise at 0:44 in the video above, BMW N20 N26 Balance Shaft Seal Tool Kit - CTA 7676, BMW SI B11 09 15 Technical Bulletin - The Importance Of Priming The N55 Oil System, BMW 22V-119 Recall: Stop Your BMW N52 Engine From Catching Fire, BMW N55 Water Pump Ground Bolt Replacement - Do It Before You're Left Stranded, 2023 FCP Euro Winter Kit Sale: Our Experts' Favorite Kits, 5 Of The Best Used European Luxury Cars To Buy Under $10,000, 5 Of The Most Notable European Tuning House Conversions, European Cross-Plane V8 Engines You Should Know About, A rattling or clacking noise coming from the front of the engine on start-up. Some of the bolt threads may catch the cylinder head, so if a bolt wont budge, back it out with your fingers. The oil pump drive assembly needs tension on its chain too, so remove the pin from that tensioner. If you car is already out of warranty, that leaves you with the options of bringing it to a dealer or independent shop and paying a large sum of money, or taking a weekend and tackling the job yourself. Slide the intake cam sprocket onto the cam and work the chain onto the teeth. Go back to the battery, refit the negative cable onto the battery, and tighten it down once everything is connected. Clip the airline on, plug in the sensor, and clip the coolant line under the plenum towards the driver's side of the engine bay. Surely there is a reason why BMW has used at least three different models of this part. With that said, it is a doable job for a DIYer if youre careful enough. Pull up on the pins to release them and push down on the intake pipe to separate it from the airbox. Thread two of the vibration dampener bolts into the mount and pull on them, wiggling it off of the crank snout. One plug is under the drivers side camshaft, while the two others and down by the crankshaft. Remove them and pull the fuel rail off of the engine. Use a 22mm socket to rotate the pulley to give yourself better access to the bolts. Factoring in the cost of the tools with the parts brings the DIY bill to nearly $1200. Tighten the tools mounting bolts with a 10mm wrench. Once the two long bolts are tightened, snug up the four other hex bolts with the same wrench. The locking pin with the yellow cord attached to it should slide into the space that the plug occupied if the car is at top dead center. Now that the rear harness has been removed, the front harness is next. Use an 8mm socket to secure the three 8mm fasteners at the front of the cover. Three 8mm bolts hold the inner panel to the car, while two locating tabs lock the rear in place. Snug the valve cover bolts against the cover, but don't tighten them down. So much so, that BMW has acknowledged this and issued a recall. Sign up to get first notice of specials and promotions. Lastly, install the strut top covers. Use this quick and inexpensive fix for your BMW N55 water pump ground bolt before it breaks. The tool sits tightly on the camshafts and will require some wiggling and force for removal. Lift the chain and slide on the exhaust sprocket. Remove one of the E12 bolts holding in the engine mount arm and loosen the other two allowing it to move around. Use a hammer and chisel or punch to knock out the crankshaft seal. Table of Contents show. This job requires several specialty tools and a wealth of wrenching experience. Next, plug in the high-pressure fuel pump and the boost control solenoid. This is a Timing Chain Replacement Kit as referenced by BMW for the N20 and N26 engines found in many 2012-2016 BMW 228i/328i/428i/528i and Z4 28i RWD models. The exhaust cam sprocket is now taking up a large portion of the slack in the chain, allowing the vibration dampener mount to be installed onto the snout of the crankshaft. Cost at the Mechanic: $1,624 to $1,879. Tighten them to 5.5 N m. Plug the actuators in once they are torqued down. 4.2 out of 5 stars 36. The two slots at the back of the engine and the small mounting ball opposite the oil filler cap should be accessible for the plastic engine cover. Each cylinder has an ignition coil, a fuel injector, and a ground wire. After the pump is mounted, reconnect the vacuum line to the pump and clip it into the firewall. It is the N20 engine (turbo 4 cylinder engine) used in the X3 28i for certain X3s from 2012 to 2014 that is reportedly most prone to failure of timing chain guides. The smallest part of the brace is held in with six 10mm bolts. Here are some of our favorites from Europe. The CTA balance shaft tool used to lock the shaft in place mounts under the oil pickup. Rotate the balance shaft slightly until the bolt slips in if it doesnt right away. Nice 89k miles already..not bad.I will be keeping mine around 150k - 200k or longer of the interior and exterior is not bang up or look old or outdated.if you know what I mean. They cannot be used interchangeably. Push in the tabs on the plugs and separate the connections. These are all pretty standard specs for most modern BMW engines. hb``` cbO Once it is secured, spin the camshaft adjusters until the holes in them line up with the pins in the timing tool. Replacing the BMW N20 timing chains and their guides is not for the faint of heart. Manufacturer Part Number. Horizontally opposed views, only. Including fluids replacement. Let the starter run for somewhere between 5 and 10 seconds, and repeat the process once more. Part of the reason Im so interested in learning about this platform. The issue is so much of a tensioner issuer as it is the guide itself. Have plenty of rags ready when threading the tensioner out by hand, it is oil fed and will leak oil upon removal. Fit the transmission cover onto the locating pin and slide it forward. Next is the steering rack cover. Here are some of our favorites from Europe. According to the timing. Luckily, the valves do not smash into the piston and destroy the engine (non interference). Engines are built to tight tolerances, and a worn chain puts the internal parts outside of those tolerances. The fuel rail is secured to the valve cover via four E8 fasteners. hbbd```b```Dp:"m D`R,$n,$oe`bd`\F?/ ,F The BMW X5 is a stylish choice for your next family and race car hauler. This engine component is designed to last, but it is subject to wear and . ;WTK[DjG-nmlCh2]t]zwAp0-VnXC~otv@U+y_b9(oW*WV4aB>c[lJ9mU(G$J%'l,\Lr*%^rxBMQK8I#n}% n >_FGc^X]~M![U AdA`c@`c:E`a #46 l(h Fz o7A^> Flip-up the lock on the plug, and connect the harness to the coil, then lock them once connected. Timing Chain Replacement Kit - N20/N26 - Genuine BMW Components - NOT for xDrive Models, var pricelevel1=""; var pricelevel2=pricelevel1.replace('+','');if(pricelevel1 != '' && pricelevel1 != 'Online Price' && pricelevel1 !='Racer Price') document.write(pricelevel2+' ');Price:$689.99. The BMW timing tool and be placed onto the camshafts once top dead center is reached. FREE delivery Sat, . If your vehicle happens to fall under an open recall, get in touch with the BMW customer service line at 1-800-525-7417. The vacuum pump sits at the back of the valve cover and runs off of the intake camshaft. This is my first German car and all of my prior experience is with GM/Cadillac products, specifically the 3.6L global V6 that is also known to have chains stretch/guides break. This is a Timing Chain Replacement Kit as referenced by BMW for the N20 and N26 engines found in many 2012-2016 BMW 228i/328i/428i/528i and Z4 28i RWD models. Also includes BMW projects, tips and more. I just did this job on a 2013 X3 XDrive (11/21). Then, use an 8mm socket to tighten the rod to 0.6 N m or 5 in-lbs. These 5 come in under $10,000. How much will it cost to service the timing chain system on the BMW N20/N26? Use the old assembly as a guide. You're guys' outlooks have me wondering what the highest mileage N20 out there is. First, fit the airbox onto its rubber mounts. Use a T30 socket to remove them and then pull the assembly out the bottom of the engine. Secure them to the cover using the E8 bolts and torque them to 6 N m. Next, remove the remaining locking tools. The labor alone will be between 10-15 hours, causing the cost of the job to be upwards of $5000. Spread the ears open, fit them around the tabs on the center guide, and then pinch them to lock them in place. Then, pull the cam lock tool off of the engine. First, take the chain, the three guide pieces, and the sprocket, and lay them out on a flat surface. Start by lubricating the inside of the new crankshaft seal with oil. The first bolt goes in just above the front subframe, and the second bolt goes in above the oil level sensor, which can now be reconnected to the car. 0 There are a lot of small pieces that need to be removed and unclipped before getting into the heart of the timing system. Set the bolts in a safe location after removal as they will be reused. Go slowly and work around that, and the assembly will all come out together. October 13, 2022 by Carolina. Tightening this bolt will thread it up into a small lever coming out from the transmission. However, if you were to go to a dealership for this job, out of the 7 year/70,000 mile warranty, you'll be on the hook for more than that. The new sprocket is available on our website and is linked above. I check mine every 1k or so for a whine and to check the slack. Use a jack on the transmission to lift the engine up and towards the passengers side to wiggle the pan out. When it starts to move, put one hand in the engine to keep the pressure on the rail as you back out the tensioner tool with the other. They have also "corrected the issue" like BMW on newer models. Place the rubber covers on the nuts once they're tight. Set that out of the way and use a 10mm wrench or socket to get to the three bolts on the back of the actuator. There is a plug that needs to be pulled out of the transmissions bell housing. You run the risk of severely hurting the engine if any of the steps are not done correctly, but if you follow along with our DIY, youll have all of the steps laid out in front of you. Biggest solution to this is coding out auto stop/start. Read up on each generation and find out which one fits you best. These are simple tools but much cheaper on Amazon. There are a lot of small pieces that need to be removed and unclipped before getting into the heart of the timing system. But if you drive a 2011-2017 BMW 1-3 series, there's a good chance it does. 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Some gems out there that wo n't break the bank BMW engines a T40 bit socket to tighten tools. Fasteners at the Mechanic: $ 1,624 to $ 1,879 to move around inside the timing.! Verticalscope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1 Canada...