Next, the boost control solenoid can be mounted. The timing chain can develop slack that causes rapid wear on the sprockets and plastic guides. 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. The Fora platform includes forum software by XenForo. Roller chain sprockets do not wear in diameter, but in tooth profile, becoming shark fin. 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) Clip the airline on, plug in the sensor, and clip the coolant line under the plenum towards the driver's side of the engine bay. Thanks for posting this. Automotive Replacement Engine Timing Part Sets & Kits; Automotive Replacement Belts, Hoses & Pulleys; I personally feel that the guides cheap thin plastic breaks and causes the chain to oscillate and cause the destruction. The Fora platform includes forum software by XenForo. one video is at 3000rpms,,,,and the other is reving the engine up and down,,,I sent both videos to BMW to get . There are two plastic rivets, one on each corner of the cowl. If the chain hasnt stretched, then something has happened to the guides. Towards the rear of the oil pan, on the drivers side is the oil level sensor. Application : Applicable to BMW N20 and N26 engines (4 Cylinder Turbo), see more details for below description ; Package Include: 1x Camshaft Locking Tool ,1x Camshaft fixating base Tool ,1x Alignment Pin ,1x Chain Tensioner Next, sit the wiper cowl over the wiper motor and seat all of the locks into place. Is it something that can be done in the garage? 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Thread the bolts in by hand first, to get them started, and tighten them with a 5mm hex wrench. Here are some of our favorites from Europe. The lower plugs get tightened to 50 N m, using the same 8mm hex or Allen socket. Luckily, that engine is non interference so catastrophic . Next, seat them into their respective holes and drive in their fasteners with an E7 socket. x |8>3V+iuV%2l18x936w8& G $m& c! MB i The timing chain appears to be the number one fault on the N20, however, this issue is mostly prevalent on engines and vehicles produced prior to 2015. Grab a rag or six as there is fuel in these lines, and it is under pressure. The job itself requires three special tools specific to this engine. Take the accessory belt and seat it onto the vibration dampener. Unclip the wastegate rod from the turbocharger and pull the actuator and solenoid out of the engine bay. Take your time figuring out the orientation of the seal. A lot of those engines see completely cracked guides or pieces broken off that caused it to skip. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. endstream endobj 291 0 obj <>stream BMW N57 Automatic Timing chain & con-rod bearing shells replacement. var fname = document.getElementById("name_fs"); The chain tensioner is malfunctioning due to low oil pressure. If BMW knows they're not saying, but they did change the tensioner, didn't they? Find a non-dealer service center to change it, ASAP. Including fluids replacement. To get the oil pan out, you may need to disconnect the engine mounts and jack the engine up. Very interesting story. Depending on the parts in stock and who is available to do the job, they could have the car upwards of a week. @import url("/site/css/styles-bryson-2023-03-06.css"); Use the parking brake to prevent the car wheels from rolling. The valve cover is secured to the cylinder head via twenty E12 bolts. Which broke first, the chain or the guide? The image below shows how they should be laid out. Horizontally opposed views, only. $75.19. 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. #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 Make sure the bottom left guide pin goes through the chain guide and not behind it when installing. This job requires several specialty tools and a wealth of wrenching experience. A timing chain will stretch over time. The BMW X5 is a stylish choice for your next family and race car hauler. Grip the front of the engine cover and pull up to pop it off of the front locating pins. 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. Then, install the rubber gaskets into the valve cover. 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.