Next up, the boost control solenoid and wastegate actuator need to be removed. A new cover will cost you $455. Go slowly and work around that, and the assembly will all come out together. Next, refit the two-piece lower cowl. The N20 is a 2.0L inline-4 single turbo engine that replaced the naturally aspirated 3.0L N52/N53. Timing Chain Module Overview Replace the following components in the illustration. Remove the timing chain tensioner tool, but don't release all of the tension from the rail. I'm hoping not to cross 100k in my 328i (at 68k now; 3 mile commute to work and she only comes out once a week during the school year so I think it's doable), only because I'm hoping a 335i will be in my garage in the next 3 years. Starting at the exhaust side front corner, remove the bolts in a counter-clockwise spiral pattern, removing the outermost bolts before moving to the inner bolts. Thread the new tensioner into the engine once. A belt or chain skipping a tooth can cause the valves to hit the pistons, destroying the engine. Brand: HJL. The circular cutout in the ears will line up with a circular raised portion on the other guide. The tool sits tightly on the camshafts and will require some wiggling and force for removal. .SQ2!2%c2b:EYsTtJXrsc~;a^I\_m(AY>.nnK[],(FZ7Sx/91H%H)i. The next thing in the way is the plastic engine cowl, located behind the engine. BMW's love for aluminum bolts has caused more than a few issues. Slip the chain into the right-side guide, prying open the bottom just enough to get the chain inside. ;WTK[DjG-nmlCh2]t]zwAp0-VnXC~otv@U+y_b9(oW*WV4aB>c[lJ9mU(G$J%'l,\Lr*%^rxBMQK8I#n}% n >_FGc^X]~M![U AdA`c@`c:E`a #46 l(h Fz o7A^> Use this quick and inexpensive fix for your BMW N55 water pump ground bolt before it breaks. Keep pushing the lever up with the bolt until you hear a pop. The outer panel is secured to the car with twenty 8mm bolts. Pull the variable timing components off of the sprockets and then pull the sprockets off of the camshafts. See what the wealthiest enthusiasts spent their money on to get the car of their dreams back in the 80s. Automotive Replacement Engine Timing Part Sets & Kits; Automotive Replacement Belts, Hoses & Pulleys; 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. Luckily, the valves do not smash into the piston and destroy the engine (non interference). First, secure the two ground wires in between the injectors with their 8mm bolts. 4.2 out of 5 stars 36. Go back to the battery, refit the negative cable onto the battery, and tighten it down once everything is connected. Engine Timing Chain Tensioner, Engine Timing Cover Plugs, Engine Crankshaft Pulley Hub Bolt, Oil Pump Sprocket Bolt, Vacuum Pump . 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. The N20 and N26 engines are known to have a problem with the timing chain and guides that were originally installed at the factory. The new sprocket is available on our website and is linked above. Tighten them to 5.5 N m. Plug the actuators in once they are torqued down. 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. Use a 10mm socket to remove the bolt on the oil pickup. 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. N20 engines were released in 2011 and began phasing out in 2016 in favor of the new BMW B48 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. The wiring harness for the last few plugs runs along the back of the valve cover and is secured to it via a bracket. 222 29K views 1 year ago This is a step by step guide how to remove the timing chain. Then, lower the engine down onto the mounts. Use the straight sections in the seal to determine where it should sit in the pan. They've gone through like five variants of all those parts apparently. Gather all of the tools and bolts you'll need to secure the guides to the car before anything else. %PDF-1.6 % The fuel rail is secured to the valve cover via four E8 fasteners. The issue is still fairly rare, and it's not too terribly likely you'll be affected. 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. Similar to finding top dead center with the screwdriver, turn the engine over with something like a sharpie marker in the hole and watch for when the sharpie gets to its lowest point. Remove the bolts and slide the panel forward to remove it. couponTxt: "CouponTxt", // offer text Use a T30 socket to remove them and then pull the assembly out the bottom of the engine. For a better experience, please enable JavaScript in your browser before proceeding. These are all pretty standard specs for most modern BMW engines. Thread it in a few turns, move the guide, and check to see whether or not it pivots on the pin. hb``` cbO TIMING CHAIN REPLACEMENT REMOVAL BMW N20 N26 ENGINE 320i 328i 420i 428i 520i 528i X1 X3 X4 Z4 F20 F22In this video we will explain how to replace timing chai. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Tighten all of the bolts to 12 N m. A pair of transmission lines need to be reattached to the oil pan. Push down on the tab and pull the plug off. N20 timing chain issue. The new timing chain won't have any play in its length, making the cam sprocket installation a bit tricky. Bringing the BMW community together. Take the vibration dampener and seat it on the mount, lining up the bolt holes. Pull the wiring out of the rubber seal just forward of the cowl and pull the seal off the strut brace. 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. Next, grab the large green CTA timing tool and set it in front of the camshafts. SCSN Engine Chain Guide Rail Tensioner 11317545959 for B MW N51 N52 N53 N54 N55 N20 Timing Chain Kit. For those capable or bold enough to take on this job, there is a lot of monetary savings to be had. 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. var fname = document.getElementById("name_fs"); 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. Hold the middle guide and the chain, pulling up out of the engine. Biggest solution to this is coding out auto stop/start. 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. Then, use an 8mm socket to tighten the rod to 0.6 N m or 5 in-lbs. 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. 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 BMW timing tool and be placed onto the camshafts once top dead center is reached. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! If a chain stretches enough, it can come loose on one of the sprockets causing it to jump off of the sprocket. 2012-2015 BMW 3-Series and 4-Series Forum. Remove that with an E8 socket as well. When removing the panel, be careful not to get covered in the dirt and debris that may fall out of it. 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. Next, slide the wastegate actuator through its mounting bracket and secure it with its three 10mm nuts. There are three bolts holding the oil pump drive assembly into the engine. 2500-3500 is a fair price for this job. A flat-blade screwdriver can help push the tab in while you pull on the plug. Including fluids replacement. They did update the tensioner as well, but the root cause as far as I understand was the guide primarily. So much so, that BMW has acknowledged this and issued a recall. Lastly, remove the two E8 bolts in the center of the middle guide. Manufacturers will only go so far for a customer. By keeping AS/S turned off, you're reducing the number of times the car rubs the chain across the guide without oil/fresh oil and prolonging the guide. NumberOfItems: 4 hbbd```b```Dp:"m D`R,$n,$oe`bd`\F?/ ,F Doing so will unlock them and allow the cowl to be removed. The crankshaft pulley mount sits on the snout of the crankshaft and helps to align the chains in the engine. The timing chain guides, as their name suggests, keep the chain on its proper path at the proper tension. These 5 come in under $10,000. Before the crankshaft bolt can be removed, the vibration dampener needs to be removed. BMW updated this starting in 2013, and any new timing chain replacement will need one of the new sprockets. Leaving the car in park will prevent the engine from rotating as the transmission wont let it move. Use an 8mm socket to secure the three 8mm fasteners at the front of the cover. 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. Clip the actuator rod to the wastegate once the actuator is secured. Which broke first, the chain or the guide? Content on bimmerfest.com is generated by its users. "> DIY Difficulty - Intermediate to Advanced BMW N20 Timing Chain Kit Cost to Repair N20 Timing Chain & Components - ~$200 DIY, $1000+ indy shop Mileage - May fail earlier, but usually after 50,000 miles Other BMW N20 Engine Problems Thanks for posting this. // Settings, Please back up before changing. Pop these clips out, and the cowl can be pulled off. 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Make sure all of the wiring and fuel lines are out of the way before dropping the cover on. At the back of the cylinder head, nearly up against the firewall, is a vacuum pump. Use a 22mm socket to rotate the pulley to give yourself better access to the bolts. Next, plug in the high-pressure fuel pump and the boost control solenoid. I would DEFINITELY change the guides as well and most likely the chain too. When installing the valve cover, be very careful not to crack it. $229.00 $ 229. FREE delivery Sat, . 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 job itself requires three special tools specific to this engine. BMW N57 Automatic Timing chain & con-rod bearing shells replacement. Refit the transmission's dust shield and secure it to the bell housing with three 10mm bolts. --> If you needed to use the manual lockout on the side of the transmission to put it into neutral, back the bolt out with a 5mm hex wrench until the bolt isn't making contact with the lever.
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