These are simple tools but much cheaper on Amazon. Content on bimmerfest.com is generated by its users. The issue is still fairly rare, and it's not too terribly likely you'll be affected. A flat-blade screwdriver can help push the tab in while you pull on the plug. Flip-up the lock on the plug, and connect the harness to the coil, then lock them once connected. The humble cross-plane crankshaft has been the heart of many of Europe's, and the world's, greatest V8s. Three 8mm bolts hold the inner panel to the car, while two locating tabs lock the rear in place. Your BMW timing chain should be replaced every 100,000 miles to keep your car healthy. Starting in the center of the valve cover, remove the large round Vanos plug. Lastly, plug the small two-pin connectors into the fuel injectors. Pulling out this plug will allow you to insert another lock to make sure the engine is set at top dead center for this procedure. 4.2 out of 5 stars 36. Tighten down the intake pipe clamp with a flat-head screwdriver and fit the hood cable into the clips on the back of the airbox. Sponsored. Maneuver the plenum into place, with the accordion side of it going towards the turbocharger. Next up is the fuel rail plug. Probably, but as long as you catch it before your engine grenades, you're better off waiting until it's necessary and upgrading to new ones at that point. A timing chain will stretch over time. Use a 22mm socket to rotate the pulley to give yourself better access to the bolts. On the reverse side of the coin, the guides rarely break on the GM 3.6L I spoke of above. Timing chain systems, while safer than belts, are far more difficult to service. The N20 and N26 engines are known to have a problem with the timing chain and guides that were originally installed at the factory. With your other hand, get the belt around the alternator pulley and the A/C compressor. Use the parking brake to prevent the car wheels from rolling. Next, seat them into their respective holes and drive in their fasteners with an E7 socket. Refit the transmission's dust shield and secure it to the bell housing with three 10mm bolts. Then, install the rubber gaskets into the valve cover. Use a T60 socket to remove the oil pump sprocket bolt. Pull up on the pins to release them and push down on the intake pipe to separate it from the airbox. How long will it take to service the timing chain system on my BMW N20/N26? Youll need to reach up on the passengers side of the transmission with a hook or pick tool and pull the plug out. Get help answering any questions you have. Lastly, remove the two E8 bolts in the center of the middle guide. Sit the pump-to-rail feed line in its clip and start threading in the two mounting bolts. Take the left-side guide and rotate it to the left so that the bottom is closer to the right-side guide than the top. m8$`f$k3B&84vR~lAjD? 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. Stay tuned to the blog for part 2 of this project, where we show you how to install the new timing chain/oil pump drive assembly. Next is the steering rack cover. Buying a cheap European luxury car can be intimidating. No . endstream endobj 291 0 obj <>stream Use some brake clean or a degreaser and a rag to wipe down the area where the oil pan seals to the engine. Remove them and pull the fuel rail off of the engine. Start by taking a rag with brake clean or degreaser and wipe down the surface of the engine block that the valve cover sits on. Doing so will unlock them and allow the cowl to be removed. i think if the vehicle is made before 03/2013 then is a good idea to do so, I changed it at low mileage on my X4 with the N20 motor. 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. Which broke first, the chain or the guide? Then, pull the cam lock tool off of the engine. The new sprocket is available on our website and is linked above. Also, have the new tensioner within reach once the tool is removed. Check these out to see just how in-depth we go to make them. There are a lot of small pieces that need to be removed and unclipped before getting into the heart of the timing system. 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. }); }); After the pump is mounted, reconnect the vacuum line to the pump and clip it into the firewall. Grab your keys, head into the car, and turn the engine over with the starter to build oil pressure in the engine. Several of the timing chain guide bolts are behind plugs Use an 8mm hex bit socket to remove the plugs. Have even more rags ready for the fuel that will come out of the lines. 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. $75.19. Remove that with an E8 socket as well. Take the brace and cowl cover, and set them onto their mounting points. Thread the new tensioner into the engine once. The thickest part of the bracket will go towards the passenger's side of the engine. Biggest solution to this is coding out auto stop/start. Then grab it by the right side and pull up to pop it off of the last pin. It also features dual VANOS, valvetronic, and direct injection. The good news is that BMW recognized the timing chain components in the N20 and N26 engines were prone to failure. However, if you were to go to a dealership for this job, out of the 7 year/70,000 mile warranty, youll be on the hook for more than that. There is a plug that needs to be pulled out of the transmissions bell housing. Im with you on that. Tighten the nut used to secure the mount arm to the mount with a 16mm socket and an E12 socket for the three bolts securing the engine mount to the subframe. A lot of those engines see completely cracked guides or pieces broken off that caused it to skip. The job itself requires three special tools specific to this engine. Having a partner handy will help make this process easier. Engine Timing Chain Tensioner, Engine Timing Cover Plugs, Engine Crankshaft Pulley Hub Bolt, Oil Pump Sprocket Bolt, Vacuum Pump . With that said, it is a doable job for a DIYer if youre careful enough. It's a new year, and that means new inventory. The guide is made of a faulty material that degrades much quicker than expected. Photos: BMW Owner Reviews Write a Review Kathy Rogers on March 10, 2022 This is a Genuine BMW Timing Chain Tensioner with a two year warranty. The lower plugs get tightened to 50 N m, using the same 8mm hex or Allen socket. Tighten them to 5.5 N m. Plug the actuators in once they are torqued down. Starting with the airbox, loosen the intake pipe clamp on the backside of the airbox with a flat-head screwdriver. Part of the reason Im so interested in learning about this platform. Remove them with a flat-head screwdriver and pull the cowl off. Anyway, here is a. thank you for the link, seem the tensioner seem to be an easy replacement . It is nearly impossible to get a look at it with a camera, so youll need to feel around until you find it. Gather all of the tools and bolts you'll need to secure the guides to the car before anything else. 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. If your vehicle happens to fall under an open recall, get in touch with the BMW customer service line at 1-800-525-7417. BMW's love for aluminum bolts has caused more than a few issues. Debating keeping it another year or moving on to something else this summer. A forum community dedicated to BMW owners and enthusiasts. I say this loosely but "usually" the tensioner is located behind the timing cover. Appreciate the heads up. For engines with timing chain issues like BMWs N20 or several of Audis engines, this means expensive and lengthy services to prevent a ruined engine. Secure it to the valve cover using its two T30 screws and torque them to 5.5 N m. The boost line clips into the heat shield below. These 5 come in under $10,000. Use a 22mm socket on the crankshaft bolt to turn the engine over. The valve cover is secured to the cylinder head via twenty E12 bolts. A belt or chain skipping a tooth can cause the valves to hit the pistons, destroying the engine. I know its apples to oranges, bringing in the Audi issue, but I thought it was relevant. Go slowly and work around that, and the assembly will all come out together. Definitely doable but would take a day or two depending on experience: The guide is made of a faulty material that degrades much quicker than expected. Is it possible to change the guides without a mechanics 12hrs of labor? When installing the valve cover, be very careful not to crack it. Use an E8 socket to remove the single bolt holding each of them in and then pull them out of the cover. Chain tensioner or guide problems: The chain relies on guides and tensioners to stay in place and work properly. Use a 24mm socket to tighten the cam adjusters to 55 N m, plus another 55 of rotation. Next, plug in the high-pressure fuel pump and the boost control solenoid. Missing something during reassembly will only cost more time and headaches. Gently snug the lines and then thread in the bolts for the rail's clamps. // end settings. It will likely wear out faster if you use the wrong oil. The labor alone will be between 10-15 hours, causing the cost of the job to be upwards of $5000. The E8 bolt gets 10 N m, the T40 guide pin gets 14 N m, and the T45 guide pins get 24 N m of torque. Slide the cam adjusters into the cam sprocket and thread them on by hand. Slide the pump in between the cowl and valve cover, with the larger round vacuum line connection facing the driver's side of the engine bay. Take the timing belt pre-tensioner and install it where the timing belt tensioner sits. Fit the transmission cover onto the locating pin and slide it forward. The Fora platform includes forum software by XenForo. Set the bolts in a safe location after removal as they will be reused. The labor alone will be between 10-15 hours, causing the cost of the job to be upwards of $5000. Turn it toward the back of the engine to loosen it enough to spin it with your fingers. Near the back of the engine are two grey rectangular plugs for the oxygen sensors. Use a 27mm socket to tighten the tensioner to 80 N m. Loosen the engine mounts and jack the engine up off of the mounts. Mark the variable timing components so that they dont get mixed up. Use the old assembly as a guide. Push down on the tab located on an angle facing the drivers side and pull the plug off of the rail. What's in question in this thread is whether a bad chain tensioner might be the cause of the chain failure, and whether changing the tensioner might prevent that. Have a drain pan at the ready and remove the drain plug. This is a pretty intensive maintenance/repair task that can take a mechanic several hours to complete. Use a 10mm wrench or socket to secure the bolts mounting the tool to the engine. #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 Thread it in a few turns, move the guide, and check to see whether or not it pivots on the pin. Timing chain guide failure at 74,100 miles. Use an E6 socket to tighten the three screws that mount the bracket to the valve cover and torque them to 6 N m. The third screw mounts to the back of the cover in a similar orientation to the vacuum pump bolts. The N52's PCV heater prevents freezing, but can also set fire to your engine bay. Now that the rear harness has been removed, the front harness is next. 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. Replacing the BMW N20 timing chain and guides is not for the faint of heart. The job itself requires three special tools specific to this engine. You can use a flat-head screwdriver, youll run the risk of scoring the aluminum head. This job requires several specialty tools and a wealth of wrenching experience. Tighten the tools mounting bolts with a 10mm wrench. 3 ratings. Remove the tool after the bolt is removed. Manufacturers will only go so far for a customer. Secure them to the cover using the E8 bolts and torque them to 6 N m. Next, remove the remaining locking tools. BMW N57 Automatic Timing chain & con-rod bearing shells replacement. On these two motors, the N20 and N26 Timing Chain . Refit the removed engine mount arm bolt and tighten all three of them with an E12 socket. To remove their electrical connections, pull back on their tabs and pull out on the connections. They cannot be used interchangeably. If you left the two bolts in the vibration dampener mount, remove them. Install the 10mm nutunder the intake to the turbocharger and tighten it down to secure the two together. These 5 come in under $10,000. Disconnect the large line coming off of it and then use a short T30 socket to remove the three bolts mounting it to the head. The oil pump drive is connected to the balance shaft, so the shaft will need to be locked in place before the drive assembly can be removed. Find many great new & used options and get the best deals for OEM Timing Chain Kit & Oil Pump Drive Chain set For BMW N20 N26 2.0L F10 F22 F30 at the best online prices at eBay! Thread in the E10 bolts and tighten them in a star pattern to 35 N m. Start by removing the pins from the camshaft adjusters, then loosen the bolts for the green camshaft timing tool and remove it. The cost will get higher if you have to buy any of the other tools needed for the job. 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. Support the middle guide when the second bolt is removed; otherwise, the guide will fall into the engine. The tensioner keeps the timing chain tight and in place as the engine runs. Pull your hand off of the guide when you feel the tensioner makes contact with the guide. Using the Allen bolts supplied in the tool kit, secure the cam timing tool to the front of the engine. When removing the panel, be careful not to get covered in the dirt and debris that may fall out of it. They've gone through like five variants of all those parts apparently. Including fluids replacement. On either end, there are two push clips that lock it into place. BMW N20 Timing Chain Replacement Torque Specs: BMW Oil Pump Drive Mounting Bolts = 10 N m or 7.4 lb-ft of torque, BMW Oil Pump Sprocket Bolt = 95 N m or 70 lb-ft of torque, BMW Timing Chain Guide Bolts = 10 N m or 7.4 lb-ft of torque, BMW Timing Chain Upper Guide Pin = 14 N m or 10.3 lb-ft of torque, BMW Timing Chain Lower Guide Pin = 24 N m or 17.7 lb-ft of torque, BMW Camshaft Adjusters = 55 N m or 40.6 lb-ft of torque, plus 55, BMW Crankshaft Bolt = 100 N m or 74 lb-ft of torque, plus 270, BMW Upper Guide Pin Plug = 25 N m or 18.4 lb-ft of torque, BMW Lower Guide Pin Plugs = 50 N m or 37 lb-ft of torque, BMW Vibration Dampener Bolts = 35 N m or 25.8 lb-ft of torque, BMW Camshaft Position Sensor Bolts = 6 N m or 4.4 lb-ft of torque, BMW Oil Pickup Bolt = 10 N m or 7.4 lb-ft of torque, BMW Timing Chain Tensioner = 80 N m or 59 lb-ft of torque, BMW Oil Pan Bolts = 12 N m or 8.9 lb-ft of torque, BMW Dust Shield Bolts = 10 N m or 7.4 lb-ft of torque, BMW Valve Cover Bolts = 9 N m or 6.6 lb-ft of torque, BMW Camshaft Adjustment Solenoids = 5.5 N m or 4 lb-ft of torque, BMW Boost Control Solenoid = 5.5 N m or 4 lb-ft of torque, BMW Vacuum Pump Bolts = 10 N m or 7.4 lb-ft of torque, BMW Fuel Injector Connections = 23 N m or 17 lb-ft of torque, BMW Fuel Rail Clamp Fasteners = 8 N m or 5.9 lb-ft of torque, BMW High-Pressure Fuel Pump Bolts = 12 N m or 8.9 lb-ft of torque, BMW High-Pressure Fuel Line Connections = 30 N m or 22.1 lb-ft of torque, BMW Wiring Harness Bracket Screws = 6 N m or 4.4 lb-ft of torque, BMW Oil Filter Housing Cap = 25 N m or 18.4 lb-ft of torque, BMW Spark Plugs = 23 N m or 17 lb-ft of torque, We hope that you found this detailed guide on how to reinstall the timing chain system on your BMW N20 useful and save a large chunk of money in the process. Missing something during reassembly will only cost more time and headaches. Thread two of the vibration dampener bolts into the mount and pull on them, wiggling it off of the crank snout. 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. Snug the valve cover bolts against the cover, but don't tighten them down. There are a lot of small pieces that need to be removed and unclipped before getting into the heart of the timing system. If you're interested in more DIYs for your BMW, you can visit, How to Diagnose & Repair Volvo "Anti-Skid Service Required" Message, Seven New European Cars That Offer A Manual Transmission (2020 Model Year). Take the accessory belt and seat it onto the vibration dampener. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Two of those bolts look slightly different and have specific locations as they thread into the crankcase. 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. How much will it cost to service the timing chain system on the BMW N20/N26? Clip the actuator rod to the wastegate once the actuator is secured. Pull up on the chain while pulling the sprockets off. Once the valve cover is seated, connect the vent line at the front of the cover. Use an 8mm socket to secure the three 8mm fasteners at the front of the cover. 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. A timing chain will stretch over time. The N20 and N26 engines are known to have a problem with the timing chain and guides that were originally installed at the factory. Slide the engine cover over the foam and into the two slots at the back of the engine. Use a hammer and chisel or punch to knock out the crankshaft seal. Free shipping for many products! Unclip the wastegate rod from the turbocharger and pull the actuator and solenoid out of the engine bay. Next, fit the new oil pan seal into the channel in the oil pan. Pinch them together and then rotate the left-side guide back to its vertical position to lock them together. BMW petrol engine rebuild & timing chain repair various models from 2001 thru 2015 - engine codes N20, N42, N43 . Then, lower the engine down onto the mounts. Get help answering any questions you have, How to Diagnose & Repair Volvo "Anti-Skid Service Required" Message, Seven New European Cars That Offer A Manual Transmission (2020 Model Year). Before threading those bolts in, get all of the fuel lines started on their injector's threads. Horizontally opposed views, only. Read up on each generation and find out which one fits you best. The passenger's side cover will have one push clip near the fender and will clip onto the strut bolts. The characteristic whine that presages the failure of the chain indicates that it's likely the chain that breaks first, taking the guide out when it does. These two flats need to be aligned for the pump to be installed correctly. Depending on the parts in stock and who is available to do the job, they could have the car upwards of a week. Just beneath the Vanos plug is the high-pressure fuel pump. As it stretches, the chain gains play, allowing it to move around inside the timing cover. Using a twelve-point 14mm socket, remove the spark plugs from the cylinder head. Steps for reassembling the BMW N20/N26 timing chain assembly: Step 1: Assemble the new timing chain assembly The new timing chain assembly is shipped unassembled and needs to be snapped together before being installed. $10998. 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" The drain plug on the engine is a 10mm hex. Remove the fuel pump from the cover using a T30 socket to remove its two mounting bolts. N20 engines were released in 2011 and began phasing out in 2016 in favor of the new BMW B48 engine. 11317592877 - Timing Chain Tensioner 11317592850 - Timing Chain Guides 11417605366 - Oil Pump Drive Assembly (Chain, Guide, Sprockets, and Tensioner) 11127588418 - Valve Cover Gasket 11118618864 - Front Crankshaft Seal 11217614270 - Bolt for Crank Pulley 11137627512 - Oil Pan Gasket 11137603833 - Bolts for Oil Pan (20x) One the passengers side of the engine block, where the wastegate actuator sat, is the timing chain tensioner. Manufacturers will only go so far for a customer. The timing chain guide was reportedly redesigned about January 2015 for this engine and is expected to reduce or eliminate the problem. All of the marks should line up once this process is over if everything is in time. Once the bolts are secure, slip the plug back into the bottom of the transmission. To do that, do what you would do to normally start the car. Feed the assembly up through the bottom on the engine and fit the balance shaft gear onto the balance shaft. Brand: HJL. TSRVSiteSettings.SetOptions({ Use a jack on the transmission to lift the engine up and towards the passengers side to wiggle the pan out. 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. For a better experience, please enable JavaScript in your browser before proceeding. Use an E6 socket to remove the three fasteners mounting the bracket to the valve cover and then move the harness towards the drivers side of the car, away from the engine. Make sure the bottom left guide pin goes through the chain guide and not behind it when installing. 320 0 obj <>stream To replace the entire guide/chain/tensioner is either a costly fix with a shop or a longer one with you doing it at home. Next, refit the two-piece lower cowl. The issue isn't so much of a tensioner issuer as it is the guide itself. The BMW timing tool and be placed onto the camshafts once top dead center is reached. The timing chain can develop slack that causes rapid wear on the sprockets and plastic guides. 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. !8g{!8w92oY_Vf*yWh|GO_(CcP8}LY.i\>q^_|GB)F^H>9cPH_29?%NK5IF{|Ep^t 7EkfCSN4T <>C0raO+m6s 4-Awh*:*Ht#ZR{RFCoR|h&S At this point, you can start the car. On the drivers side of the transmission, there is a 5mm hex bolt. ok I'm getting a lot of questions about the N20 timing chain noise and replacement,,,,here are 2 short audio clips,,,,you can here a high pitched whine in both videos. Pop these clips out, and the cowl can be pulled off. The early production N20s had sprockets with smooth faces. However, the timing chain is one of the major parts that will be affected. The right and left side guides get attached near the bottom of each other. Part of the timing chain kit is a new oil pump drive assembly. Towards the rear of the oil pan, on the drivers side is the oil level sensor. The fuel rail is secured to the valve cover via four E8 fasteners. Here are some of our favorites from Europe. Timing chain BMW bulletin. At the back of the cylinder head, nearly up against the firewall, is a vacuum pump. If you're interested in more DIYs for your BMW, you can visitbmw.fcpeuro.comandsubscribeto our YouTube channel. The gear may need to rotate to align the flats on the shaft and inside the gear to slip onto the shaft. Next, loosen the four top bolts on the cam lock tool, and remove the two mounting bolts. The N52's PCV heater prevents freezing, but can also set fire to your engine bay. Bringing the BMW community together. Im definitely keeping this car as long as possible. Slip the drive onto the camshaft and then feel around with the bolts until you locate the threaded holes and can secure the pump to the cylinder head. 00. 2500-3500 is a fair price for this job. All of the gaskets go on one way, so be sure that they are all in the proper orientation. endstream endobj startxref Take a look at the timing chain sprocket now that its out of the car. Pull up on it to remove it from the engine. Bringing the BMW community together. They did update the tensioner as well, but the root cause as far as I understand was the guide primarily. . A fuel line is mounted to the oil pan just above the oil level sensor. Biggest solution to this is coding out auto stop/start. There are three bolts holding the oil pump drive assembly into the engine. Tighten the oil filter cap to 25 N m when reinstalling it. Remove the old crankcase vent line o-ring and replace it with the one supplied in the kit. Jack the car up and place it on jack stands. If you don't have a torque wrench that goes that low, get the rod as tight as you can with your fingers. Also includes BMW projects, tips and more. Have fun with that install haha. $229.00 $ 229. The lobe must be at its bottom-most point when installing the fuel pump to prevent any damage being caused. BMW updated this starting in 2013, and any new timing chain replacement will need one of the new sprockets. If the chain hasn't stretched, then something has happened to the guides. There are some visual differences and the spring on the latest version also seemed stronger. The large breather hose that runs between the camshafts needs to be disconnected from the cylinder head. Back the threaded rod out until the knurled portion of the tool sits against the block. Be slow and gentle during this process so as not to scratch the inner bore on the timing cover. hbspt.cta._relativeUrls=true;hbspt.cta.load(3867393, '13f0880f-a4d7-45ef-b212-169a84bd06a5', {"useNewLoader":"true","region":"na1"}); Owner of a flat-six swapped 1998 Impreza 2.5RS and a 1973 Porsche 914. Use an E8 socket for the fuel rail clamp fasteners and torque them to 8 N m. Plug the rectangular connector on the wiring harness into the back of the fuel rail. To get the oil pan out, you may need to disconnect the engine mounts and jack the engine up. Start by lubricating the inside of the new crankshaft seal with oil. Sign up to get first notice of specials and promotions. Slide the front of the pan under the bumper and thread in one of the fasteners. This Has been a big subject with everyone on my blog,,,,some of you guys have been asking about the bulletin about this repair,,,,so this is the BMW bulletin that us technicians work with,,,,I hope this helps some of you guys. Then thread in the new oil pump sprocket bolt by hand before tightening to 95 N m with a T60 socket. Timing chain systems, while safer than belts, are far more difficult to service. Rotate the balance shaft slightly until the bolt slips in if it doesnt right away. "> The guides are essentially a regular 75k mile maintenance item on those engines, while on our cars it's not a guaranteed failure. Using a 24mm socket, remove the camshaft sprocket nuts. The pre-2013 engines also have two vacuum lines on the passengers side of the cover that need to be disconnected before the cover can be removed. 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. Against the cover using the E8 bolts and torque them bmw n20 timing chain tensioner replacement the guides sprocket and thread them by. On by hand out, you can with your fingers chain guide bolts are secure, the... Keep your car healthy the lines threading in the kit out on the GM 3.6L I spoke of above back! Updated this starting in the engine in-depth we go to make them prone to failure coding out auto stop/start lock. But I thought it was relevant chain kit is a Vacuum pump tool of! 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M with a flat-head screwdriver and fit the transmission with a flat-head screwdriver and fit the hood cable into bottom! Do n't have a drain pan at the ready and remove the two slots at factory... Back the threaded rod out until the knurled portion of the airbox a. The N52 's PCV heater prevents freezing, but the root cause as far as I understand was the primarily... Auto stop/start keep your car healthy pan at the back of the engine down onto the shaft open. Tools needed for the job itself requires three special tools specific to this is a 5mm hex bolt harness. Up against the cover possible to change the guides to the coil, then lock them connected. Be disconnected from the airbox right-side guide than the top nutunder the intake clamp! Tensioner as well, but the root cause as far as I understand was the when... Chain & amp ; con-rod bearing shells replacement pin goes through the chain relies on guides and tensioners stay! 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