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. couponID:"CouponID", // coupon offered, change as needed. This part is listed by BMW as BMW part number 11318685091 (11-31-8-685-091) and is described as Timing Chain Tensioner for the N20 and N26 4 cylinder turbo gas engine, as used in 2012, 2013, 2014, 2015, 2016, and 2017. The engine needs to be able to rotate freely by hand to remove the timing chain and its associated components. Timing Chain Replacement Kit - F22 228i, F30 328i, F32 428i, Z4 28i N20/N26 RWD. It is nearly impossible to get a look at it with a camera, so youll need to feel around until you find it. 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. if(document.body.contains(fname)) { Several of the timing chain guide bolts are behind plugs Use an 8mm hex bit socket to remove the plugs. FREE delivery Sat, . Mark the variable timing components so that they dont get mixed up. A lot of BMW N20 engines have been plagued with the timing chain stretching as well a BMW N20/N26 Timing Chain Replacement DIY Part 1 - Removal & Disassembly (328i, 320i, 228i,. Thniking Audi A5 Sportback or 4-series Gran Coupe. Sit the pump-to-rail feed line in its clip and start threading in the two mounting bolts. Adjust the tool as necessary and then lock it down by tightening the two bolts with a 13mm wrench. The passenger's side cover will have one push clip near the fender and will clip onto the strut bolts. It turns out a simple process issued by BMW is the fix. Lastly, pull the four ignition coils out from the engine. The good news is that BMW recognized the timing chain components in the N20 and N26 engines were prone to failure. Jack the car up and place it on jack stands. Content on bimmerfest.com is generated by its users. Debating keeping it another year or moving on to something else this summer. Pull up on the chain while pulling the sprockets off. 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. Unclip the wastegate rod from the turbocharger and pull the actuator and solenoid out of the engine bay. Go back to the battery, refit the negative cable onto the battery, and tighten it down once everything is connected. 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. Free shipping for many products! Also, have the new tensioner within reach once the tool is removed. Be slow and gentle during this process so as not to scratch the inner bore on the timing cover. Using the Allen bolts supplied in the tool kit, secure the cam timing tool to the front of the engine. With everything in place, use a torque wrench to tighten everything to spec. Use a 10mm socket to secure the six bolts for the cowl cover to the car and an E20 socket to secure the four bolts that mount the brace to the car. 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. A lot of those engines see completely cracked guides or pieces broken off that caused it to skip. Remove the timing chain tensioner tool, but don't release all of the tension from the rail. These guides are made from plastic. 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. Slip the chain into the right-side guide, prying open the bottom just enough to get the chain inside. The two pins on the tool will fit into the sprocket, while the flat portion will mount to the bottom of the timing cover. The large breather hose that runs between the camshafts needs to be disconnected from the cylinder head. But this valve guide issue has me concerned. Make sure all of the wiring and fuel lines are out of the way before dropping the cover on. Grab your keys, head into the car, and turn the engine over with the starter to build oil pressure in the engine. There are two clips holding the cowl on, on either side of the engine bay. If the chain breaks the guide while it itself is breaking, then it's effectively impossible to tell which part really failed. While sliding both of the sprockets on, you'll need to work the chain into the groove of the top guide as well. The early production N20s had sprockets with smooth faces. Use a 24mm socket to tighten the cam adjusters to 55 N m, plus another 55 of rotation. y#{ M o@u8*h|1;0|[}VUW{v`%'tSbj]COPt_\@O",AHog]"3,t .zT7FpI)cNf~1M | ]:Y3GVxp~ubw#rugC8-02aI lo 9JF Use the parking brake to prevent the car wheels from rolling. Grab a set of channellocks and grip the knurled part of the tensioner. The smallest part of the brace is held in with six 10mm bolts. 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) Place the wiper arms on the studs and tighten down the nuts with a 16mm socket. Bringing the BMW community together. Now that the rear harness has been removed, the front harness is next. Have plenty of rags ready when threading the tensioner out by hand, it is oil fed and will leak oil upon removal. I just did this job on a 2013 X3 XDrive (11/21). The gear may need to rotate to align the flats on the shaft and inside the gear to slip onto the shaft. 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. Using a 10mm wrench, remove the negative cable from the battery, breaking the electrical circuit. A range of BMW petrol engines in cars registered between 2001 to 2015 appear to have a design problem affecting the timing chain or tensioner. defaulttext:"DefaultText", // bottom of popin message 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. Sponsored. Plug in the O2 sensors. October 13, 2022 by Carolina. 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. Use a 22mm socket on the crankshaft bolt to turn the engine over. Go slowly and work around that, and the assembly will all come out together. The thickest part of the bracket will go towards the passenger's side of the engine. Use a flat-blade screwdriver to pop the clip out and fold the harness away from the valve cover. The N20 and N26 engines are known to have a problem with the timing chain and guides that were originally installed at the factory. Use the old assembly as a guide. Im definitely keeping this car as long as possible. Use a 10mm wrench or socket to secure the bolts mounting the tool to the engine. 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. Like you alluded to, it sort of seems like a chicken or the egg sort of debate. 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. Leave the solenoid attached to the actuator; it will mount to the valve cover. Anyway, here is a. thank you for the link, seem the tensioner seem to be an easy replacement . I've also been told that in most cases you can hear the whine well in advance to it breaking. A fuel line is mounted to the oil pan just above the oil level sensor. It turns out a simple process issued by BMW is the fix. Then, press down on the front of the cover, locking it into place. function BlurEvent() { 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. Use a T60 socket to remove the oil pump sprocket bolt. 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. 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. Take the fuel rail and situate it on the valve cover. Would Replacing to old timing chain tension the updated one prevent the timing chain problems on the pre 14s before they start? newcust.elements["name"].value = newcust.elements["custentity7"].value + " " + newcust.elements["custentity8"].value The oil pump drive assembly needs tension on its chain too, so remove the pin from that tensioner. Using a 24mm socket, remove the camshaft sprocket nuts. BMW N20 engine repair because of timing chain failure. Remove them and pull the fuel rail off of the engine. Doing so will unlock them and allow the cowl to be removed. 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. Next, remove the six E8 bolts from the crank pulley using an E8 socket. $(window).ready(function(){ $("body").getmelikes({ The Fora platform includes forum software by XenForo. Use an E8 socket to tighten the bolts securing the transmission lines. Roller chain sprockets do not wear in diameter, but in tooth profile, becoming shark fin. 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. 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. 0 Biggest solution to this is coding out auto stop/start. I check mine every 1k or so for a whine and to check the slack. Back the threaded rod out until the knurled portion of the tool sits against the block. Lastly, plug the small two-pin connectors into the fuel injectors. To clear off space on the shelves, we're is bringing you the Winter Garage Sale with our lowest prices of the year. L u;G>[cGz~MBqg/SJ%RU ytCIX:\Q3:G+z p>t~dd5`L ,JNY"B 7>@M>w~Mnc=&?$5/Rl_`.cdRHHo ,4_/rgRfH=~M0R7GodF~A8F}ZF/coq|Id!9q7t_&kK;U?lB'pF6b3*I8nw'n. Part of the timing chain kit is a new oil pump drive assembly. 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. Engines are built to tight tolerances, and a worn chain will put the internal parts outside of those tolerances. To get the oil pan out, you may need to disconnect the engine mounts and jack the engine up. Is it something that can be done in the garage? Starting at the exhaust side front corner, remove the bolts in a counter-clockwise spiral pattern, removing the outermost bolts before moving to the inner bolts. The crankshaft pulley mount sits on the snout of the crankshaft and helps to align the chains in the engine. With that said, it is a doable job for a DIYer if youre careful enough. $10998. Use some brake clean or a degreaser and a rag to wipe down the area where the oil pan seals to the engine. Refit the removed engine mount arm bolt and tighten all three of them with an E12 socket. Have fun with that install haha. Part of the reason Im so interested in learning about this platform. @import url("/site/css/styles-bryson-2023-03-06.css"); However, there are some gems out there that won't break the bank. 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. There are two plastic rivets, one on each corner of the cowl. Read up on each generation and find out which one fits you best. The BMW N20 timing chain is replaced because it wears out quickly for the following reasons: The tensioner has deteriorated, as a result, the timing chain of the BMW N20 does not stretch well, slips, and the valve timing is disturbed. } When installing the valve cover, be very careful not to crack it. I personally feel that the guides cheap thin plastic breaks and causes the chain to oscillate and cause the destruction. couponTxt: "CouponTxt", // offer text First up, refit the turbocharger's intake plenum. 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. In January 2015, BMW redesigned the timing chain components, which seems to have significantly reduced the chance of failure. 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. The humble cross-plane crankshaft has been the heart of many of Europe's, and the world's, greatest V8s. Here are some of our favorites from Europe. If youre reading this DIY and have already drained the oil, there is a way to get the transmission into neutral without starting the car. Once the valve cover is seated, connect the vent line at the front of the cover. The fuel rail is secured to the valve cover via four E8 fasteners. 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). Use an E8 socket to remove the single bolt holding each of them in and then pull them out of the cover. Secure them to the cover using the E8 bolts and torque them to 6 N m. Next, remove the remaining locking tools. } For a better experience, please enable JavaScript in your browser before proceeding. Amazon.com: SCITOO Fit BMW N20 N26 Engines Cam Camshaft Alignment Timing Locking Tool Come with 1 Chain Tensioner 1 Camshaft Locking Tool 1 Carry Case: Automotive - I ordered the flywheel lock and oil pump removal tool as a set from Amazon. You can use a flat-head screwdriver, youll run the risk of scoring the aluminum head. Manufacturers will only go so far for a customer. Engine Timing Chain Tensioner, Engine Timing Cover Plugs, Engine Crankshaft Pulley Hub Bolt, Oil Pump Sprocket Bolt, Vacuum Pump . Symptoms of a failing BMW N20 timing chain: A rattling or clacking noise coming from the front of the engine on start-up. Missing something during reassembly will only cost more time and headaches. .searchspring-product_finder.ss-targeted .ng-scope:first-child {display: block !important;}. The chain tensioner is malfunctioning due to low oil pressure. A belt or chain skipping a tooth can cause the valves to hit the pistons, destroying the engine. 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. Only tighten the bolts and pins finger tight. 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. The guides are made from plastic. The drain plug on the engine is a 10mm hex. Reinstall the M6 10mm bolt into the oil pickup and tighten it to 10 N m. Lastly, wiggle the flywheel locking pin out of the transmission and reinsert the plug. 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. The tensioner keeps the timing chain tight and in place as the engine runs. Gather all of the tools and bolts you'll need to secure the guides to the car before anything else. --> The guide is made of a faulty material that degrades much quicker than expected. TSRVSiteSettings.SetOptions({ Use a T30 socket to remove them and then pull the assembly out the bottom of the engine.