2,357.00 inc vat (Including Automatic Transmission Fluid & Filter, as this is part of the complete repair) BMW 44 xDrive models are an extra 300 of the above prices to remove the extra transfer case & front differential as part of the repair. Back the threaded rod out until the knurled portion of the tool sits against the block. The airbox is secured to the car with three locating pins. A fuel line is mounted to the oil pan just above the oil level sensor. First, secure the two ground wires in between the injectors with their 8mm bolts. Unless I win the lottery of course. The new timing chain assembly is shipped unassembled and needs to be snapped together before being installed. Each cylinder has an ignition coil, a fuel injector, and a ground wire. Check these out to see just how in-depth we go to make them. Mark the variable timing components so that they dont get mixed up. This job requires several specialty tools and a wealth of wrenching experience. Gently snug the lines and then thread in the bolts for the rail's clamps. Manufacturer Part Number. Make sure all of the wiring and fuel lines are out of the way before dropping the cover on. They cannot be used interchangeably. Read up on each generation and find out which one fits you best. With everything in place, use a torque wrench to tighten everything to spec. The guide is made of a faulty material that degrades much quicker than expected. The cost will get higher if you have to buy any of the other tools needed for the job. The lobe must be at its bottom-most point when installing the fuel pump to prevent any damage being caused. Tighten the oil filter cap to 25 N m when reinstalling it. Slide the cam adjusters into the cam sprocket and thread them on by hand. bimmerfest.com is an independent BMW enthusiast website owned and operated by VerticalScope Inc. At the back of the cylinder head, nearly up against the firewall, is a vacuum pump. Thread the bolts in by hand first, to get them started, and tighten them with a 5mm hex wrench. Use a 22mm socket to rotate the pulley to give yourself better access to the bolts. x |8>3V+iuV%2l18x936w8& G $m& c! MB i There's gotta be some with 200k right? Make sure the chain is seated properly in the teeth of the sprocket. The guides are essentially a regular 75k mile maintenance item on those engines, while on our cars it's not a guaranteed failure. Depending on the parts in stock and who is available to do the job, they could have the car upwards of a week. I was under the impression a timing chain (tensioners too) job was a fairly involved process. Next, install the spark plugs and tighten them to 23 N m. Then, insert the ignition coils over the plugs and press them down to seat them. The early production N20s had sprockets with smooth faces. Use a 14mm wrench to tighten the lines to the injectors. Then, tighten down the two mounting bolts with a T30 bit socket and torque them to 12 N m. Go back and forth on the two bolts to keep even pressure in the pump until you reach the 12 N m. Tighten the two fuel line connections with a 17mm wrench and torque them to 30 N m. Move the harness over towards the back of the engine and the mounting bracket into position. Is it something that can be done in the garage? Next, slide the wastegate actuator through its mounting bracket and secure it with its three 10mm nuts. But if you drive a 2011-2017 BMW 1-3 series, there's a good chance it does. They have also "corrected the issue" like BMW on newer models. Before fitting the camshaft timing adjuster to the valve cover, wipe some fresh oil around their o-rings. For a better experience, please enable JavaScript in your browser before proceeding. Your BMW timing chain should be replaced every 100,000 miles to keep your car healthy. bimmerfest.com is not in any way affiliated with Bayerische Motoren Werke AG. Posted on August 2, 2017 by bmwtechnician. 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. One the passengers side of the engine block, where the wastegate actuator sat, is the timing chain tensioner. Remove the bolts and slide the panel forward to remove it. Next is the steering rack cover. Part of the reason Im so interested in learning about this platform. Take a 5mm hex wrench and twist the locks in the center of the cowl 90 to the right to lock them, and the panel, down. The image below shows how they should be laid out. Next, sit the wiper cowl over the wiper motor and seat all of the locks into place. Snug the valve cover bolts against the cover, but don't tighten them down. The point of the rod is to show you when cylinder one reaches the top of its stroke, indicating that it is at top dead center. Get help answering any questions you have. Push down on the tab and pull the plug off. Find a non-dealer service center to change it, ASAP. 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). Thread the new tensioner into the engine once. Photos: BMW Owner Reviews Write a Review Kathy Rogers on March 10, 2022 With that said, it is a doable job for a DIYer if youre careful enough. The cost will get higher if you have to buy any of the other tools needed for the job. Timing chain guide failure at 74,100 miles. They will go through the tool and thread into the cylinder head, locking the tool into place. Using a 16mm socket, remove the windshield wiper arms. Replacing just the tensioner is a fairly easy job. The N20 is a 2.0L inline-4 single turbo engine that replaced the naturally aspirated 3.0L N52/N53. Starting in the center of the valve cover, remove the large round Vanos plug. Then, using the two bolts used to remove it, slide and wiggle it into the front of the timing cover and through the small timing sprocket and the oil pump drive gear behind the timing sprocket. The job itself requires three special tools specific to this engine. Rub some oil on the Valvetronic plug on the cylinder head, as this is the first thing the cover comes in contact with, and it needs to slide over it. Next, take the flywheel locking tool and install it with the teeth facing upwards so that they mesh with the teeth on the flywheel. %PDF-1.6 % Once all of those have been released, pull the airbox out of the engine bay. Take your time figuring out the orientation of the seal. 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. . BMW just redesigned the n20 timing chain related components and my 328i would be one of the first to receive the update. Doing so will unlock them and allow the cowl to be removed. Then pull the balance shaft locking tool out from the oil pickup. A new cover will cost you $455. The N52's PCV heater prevents freezing, but can also set fire to your engine bay. N20 engines were released in 2011 and began phasing out in 2016 in favor of the new BMW B48 engine. Clip the actuator rod to the wastegate once the actuator is secured. Then, press down on the front of the cover, locking it into place. Have the new bolts at the ready and install the new panjack up the engine as much as needed to slide the oil pan into place. Leave the solenoid attached to the actuator; it will mount to the valve cover. Biggest solution to this is coding out auto stop/start. hbbd```b```Dp:"m D`R,$n,$oe`bd`\F?/ ,F No . Torque the plug to 25 N m using an 8mm hex or Allen socket. The fuel rail is secured to the valve cover via four E8 fasteners. Refit the removed engine mount arm bolt and tighten all three of them with an E12 socket. . Additionally, you can check the timing by reinstalling either of the camshaft tools to see if they fit without having to rotate them. Head into the trunk and locate the battery. Timing chain systems, while safer than belts, are far more difficult to service. 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. Next up is the fuel rail plug. Use a 10mm wrench or socket to secure the bolts mounting the tool to the engine. The crankshaft pulley mount sits on the snout of the crankshaft and helps to align the chains in the engine. Each piece will slot into the middle cowl piece first, and then three plastic locks can be twisted into place with a 10mm socket. The timing chain can develop slack that causes rapid wear on the sprockets and plastic guides. Lastly, install the strut top covers. Next, install the exhaust camshaft sprocket. "> Jack up the engine to allow the engine mount to come out of the arm and the subframe. If the flats on the camshaft dont line up with the tool, slowly rotate the crankshaft until they do. Use a flat-blade screwdriver to pop the clip out and fold the harness away from the valve cover. Posted on August 7, 2016 by bmwtechnician. I can tell you from the past, the last generation 4 cylinder sold in this part of the world . Take a 16mm socket and rotate the ratchet to the right to pull the tensioner back. The removal of the mount gives much more access to the oil pan bolts. Using a 24mm socket, remove the camshaft sprocket nuts. Tighten them to 5.5 N m. Plug the actuators in once they are torqued down. Sign up to get first notice of specials and promotions. And I assume "newer is better." 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. First, take the chain, the three guide pieces, and the sprocket, and lay them out on a flat surface. Then, thread in the rest of the fasteners before tightening all twenty of them down with an 8mm socket. Starting with the airbox, loosen the intake pipe clamp on the backside of the airbox with a flat-head screwdriver. The adjusters are specific to the camshafts they sit on, so look for the I or E to determine which is which. There is a plug that needs to be pulled out of the transmissions bell housing. Start the threads on the feed line to the pump and the feed line from the pump to the rail. But this valve guide issue has me concerned. A timing chain will stretch over time. It is nearly impossible to get a look at it with a camera, so youll need to feel around until you find it. Rotate the balance shaft slightly until the bolt slips in if it doesnt right away. Sponsored. The timing chain guides can now be loosened with everything else out of the way. JavaScript is disabled. Improper oil maintenance, excessive heat, or even a faulty design from the manufacturer can cause the guides to wear quickly or crack. If a chain stretches enough, it can come loose on one of the sprockets causing it to jump off of the sprocket. The tool sits tightly on the camshafts and will require some wiggling and force for removal. 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. 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. These are simple tools but much cheaper on Amazon. Appreciate the heads up. Thread the new bolt supplied in the timing chain kit into the crankshaft and tighten it with a 22mm socket. The Fora platform includes forum software by XenForo. 2500-3500 is a fair price for this job. Brand: HJL. 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. Thread two of the vibration dampener bolts into the mount and pull on them, wiggling it off of the crank snout. 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. Pull the belt off of one of the pulleys and release the pressure on the tensioner. If you left the two bolts in the vibration dampener mount, remove them. 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" :1 3dXfz1FF7s/3$ 6 @$*i` Here are some of our favorites from Europe. Pull the wiring out of the rubber seal just forward of the cowl and pull the seal off the strut brace. ?mm socket to remove the nut from the engine mount stud. October 13, 2022 by Carolina. Several of the timing chain guide bolts are behind plugs Use an 8mm hex bit socket to remove the plugs. Slide the intake cam sprocket onto the cam and work the chain onto the teeth. Replacing the BMW N20 timing chain and guides is not for the faint of heart. Set aside at least two days to give yourself ample time to do everything correctly and double-check your work. Including fluids replacement. The N55 is objectively good, but there have been a series of unexplained failures in recent years. Before threading those bolts in, get all of the fuel lines started on their injector's threads. The bolt behind the upper plug can be removed with a T40 socket, while the bolts behind the lower plugs need a T45 socket. Plug in the O2 sensors. .SQ2!2%c2b:EYsTtJXrsc~;a^I\_m(AY>.nnK[],(FZ7Sx/91H%H)i. Lightly thread in some of the bolts to help align the cover into place. Remove that with an E8 socket as well. This job requires several specialty tools and a wealth of wrenching experience. If everything was done correctly, the car will start and run with no issues. $75.19. 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. Next, seat them into their respective holes and drive in their fasteners with an E7 socket. The gear may need to rotate to align the flats on the shaft and inside the gear to slip onto the shaft. There is a small circular plug on the harness for the fuel pump and boost control solenoid. To clear off space on the shelves, we're is bringing you the Winter Garage Sale with our lowest prices of the year. If you were not aware, there was a BMW N20 timing chain recall because this issue was so prevalent. You may inspect the BMW N20 engine timing chain by peering through the oil cap. Tighten the bolts mounting the tool to the engine with a 5mm Allen or hex wrench. Slip the chain into the right-side guide, prying open the bottom just enough to get the chain inside. Grab a set of channellocks and grip the knurled part of the tensioner. BMW claims that the breakaway torque for the crankshaft bolt is 600Nm. 320 0 obj <>stream Next, compress the chain tensioner and use the pin provided in the tool kit or an Allen wrench to lock the tensioner and guide out of the way. If your vehicle happens to fall under an open recall, get in touch with the BMW customer service line at 1-800-525-7417. 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 bimmerfest.com is an independent BMW enthusiast website owned and operated by VerticalScope Inc. Fit the transmission cover onto the locating pin and slide it forward. After the pump is mounted, reconnect the vacuum line to the pump and clip it into the firewall. The wiring harness for the last few plugs runs along the back of the valve cover and is secured to it via a bracket. Remove the old crankcase vent line o-ring and replace it with the one supplied in the kit. The timing chain guides, as their name suggests, keep the chain on its proper path at the proper tension.