2012-2015 BMW 3-Series and 4-Series Forum. Along with this, there's an extended warranty for the issue. --> fname.value = ""; Factoring in the cost of the tools with the parts brings the DIY bill to nearly $1200. Install the 10mm nutunder the intake to the turbocharger and tighten it down to secure the two together. To remove it, use a 22mm socket on the longest breaker bar you have. There are two long bolts supplied with the tool. Remove them with a flat-head screwdriver and pull the cowl off. No . The cost will get higher if you have to buy any of the other tools needed for the job. Release the hold on the tensioner once all of the ribs in the belt are sitting in their grooves. Take the accessory belt and seat it onto the vibration dampener. BMW's love for aluminum bolts has caused more than a few issues. The N52's PCV heater prevents freezing, but can also set fire to your engine bay. 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 . These guides are made from plastic. SCSN Engine Chain Guide Rail Tensioner 11317545959 for B MW N51 N52 N53 N54 N55 N20 Timing Chain Kit. Next, fit the new oil pan seal into the channel in the oil pan. I'm at 89k with no issues on my 2013. The two pins on the tool will fit into the sprocket, while the flat portion will mount to the bottom of the timing cover. $229.00 $ 229. NumberOfItems: 4 In the middle of nowhere without cell service? Youll need to reach up on the passengers side of the transmission with a hook or pick tool and pull the plug out. To get the oil pan out, you may need to disconnect the engine mounts and jack the engine up. Posted on August 7, 2016 by bmwtechnician. 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. The next thing in the way is the plastic engine cowl, located behind the engine. The wiring harness from both of these plugs is clipped into the valve cover, below, and to the left of the fuel pump. Use a 24mm socket to tighten the cam adjusters to 55 N m, plus another 55 of rotation. . The 22V-119 safety recall covers all you need to know about this issue. Near the back of the engine are two grey rectangular plugs for the oxygen sensors. 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. 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. For a better experience, please enable JavaScript in your browser before proceeding. All of the gaskets go on one way, so be sure that they are all in the proper orientation. Remove the timing chain tensioner tool, but don't release all of the tension from the rail. The new crankshaft bolt is a torque to yield bolt, meaning it is one-time use. Before fitting the camshaft timing adjuster to the valve cover, wipe some fresh oil around their o-rings. Take the vibration dampener and seat it on the mount, lining up the bolt holes. Then, use a flat-blade screwdriver to open the clip securing its wiring to the valve cover, and fold the plug and its harness away from the engine. Then, press down on the front of the cover, locking it into place. A timing chain will stretch over time. . Surely there is a reason why BMW has used at least three different models of this part. Use a jack on the transmission to lift the engine up and towards the passengers side to wiggle the pan out. Have even more rags ready for the fuel that will come out of the lines. BMW just redesigned the n20 timing chain related components and my 328i would be one of the first to receive the update. hbspt.cta._relativeUrls=true;hbspt.cta.load(3867393, '95a320c9-3296-4e09-83b0-65ae33cb818e', {"useNewLoader":"true","region":"na1"}); It's well known that the BMW N20 and N26 engine have timing chain problems. Replacing just the tensioner is a fairly easy job. Go back to the battery, refit the negative cable onto the battery, and tighten it down once everything is connected. I know its apples to oranges, bringing in the Audi issue, but I thought it was relevant. If everything was done correctly, the car will start and run with no issues. The outer panel is secured to the car with twenty 8mm bolts. Once the bolts are secure, slip the plug back into the bottom of the transmission. The new timing chain assembly is shipped unassembled and needs to be snapped together before being installed. 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. Thread two of the vibration dampener bolts into the mount and pull on them, wiggling it off of the crank snout. 287 0 obj <> endobj Next is the steering rack cover. Several of the timing chain guide bolts are behind plugs Use an 8mm hex bit socket to remove the plugs. The guides are essentially a regular 75k mile maintenance item on those engines, while on our cars it's not a guaranteed failure. Manufacturers will only go so far for a customer. 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 N55 is objectively good, but there have been a series of unexplained failures in recent years. The timing chain guide was reportedly redesigned about January 2015 for this engine and is expected to reduce or eliminate the problem. The dealer will charge you between 10-15 hours to complete the job. Pop these clips out, and the cowl can be pulled off. I've got to figure there's a reason why they changed it. You're guys' outlooks have me wondering what the highest mileage N20 out there is. The Fora platform includes forum software by XenForo. The forward-most corner will also fit into a rubber mounting grommet. var fname = document.getElementById("name_fs"); Thniking Audi A5 Sportback or 4-series Gran Coupe. 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. Use an 8mm socket to remove the grounds. Lastly, install the strut top covers. Like you alluded to, it sort of seems like a chicken or the egg sort of debate. Next, unplug the mass airflow sensor next to the clamp and unclip the hood release cable from the back of the airbox. ;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 the old assembly as a guide. If you left the two bolts in the vibration dampener mount, remove them. Leave the solenoid attached to the actuator; it will mount to the valve cover. Using a twelve-point 14mm socket, remove the spark plugs from the cylinder head. Next, grab the large green CTA timing tool and set it in front of the camshafts. Next, the boost control solenoid can be mounted. 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) You can use a flat-head screwdriver, youll run the risk of scoring the aluminum head. Make sure the chain is seated properly in the teeth of the sprocket. The two special bolts thread into the middle two spots at the back of the oil pan. A forum community dedicated to BMW owners and enthusiasts. The BMW X5 is a stylish choice for your next family and race car hauler. 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. The airbox is secured to the car with three locating pins.