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10-30-2015, 06:38 PM | #1 |
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N55 Accessory Belt DIY
Thanks for the help from the few that gave information. Took some helpful pictures. Overall this is a very easy DIY if you have all the right tools and a car lift.
Found these helpful videos on understanding the basics. RIBBED V-BELT 7PK 1860: 11287628653 MECHANICAL BELT TENSIONER: 11287582946 Deflection pulley: 11287578674 Deflection pulley: 11287578675
*Its worth noting that while you have the radiator fan out now is a good time to do other maintenance items and to look for potential problems. I discovered my crank shaft seal had gone bad creating a slow leak onto the vibration damper causing oil to be slung up onto the engine block.
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Last edited by Yeineken; 11-25-2015 at 07:57 PM.. |
11-09-2015, 02:21 PM | #2 |
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Best instructions I can offer:
Remove intake and front intake cowl (parts over the front of the motor) Remove Radiator Fan (involves some tricky squeezing but not too hard) Take pic of belt pattern Use breaker bar to release tension and insert service pin to hold Unbolt unbolt unbolt Install new in reverse. I know it's not much, just what I gathered from watching BMW tech do mine.
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11-09-2015, 05:05 PM | #3 | |
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11-09-2015, 05:16 PM | #4 |
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I've never seen a DIY... so IF you do this on your own... maybe you can take some pics and make a DIY for us 1Addicts.
On BMW's the serpentine belt is fairly easy to replace(although, I have not done it on my N54 just yet)... look at the idler with the shock/spring... pry off the plastic cap on the idler's face... then use a wrench on the exposed bolt to compress the tensioner, slip off the belt and install the new belt. That's how it was on my e36 and the Germans don't tend to change much over the years. Why reinvent the wheel - you know?
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11-09-2015, 05:19 PM | #5 | |
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Edit - found these helpful videos on understanding the basics.
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Last edited by Yeineken; 11-09-2015 at 05:47 PM.. |
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11-22-2015, 07:50 AM | #6 |
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Well I had a lot fun with this job. Took some pictures and will write up my process. The hardest part is just removing the fan and installing it. After that it's a walk in the park.
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11-25-2015, 07:58 PM | #7 |
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Updated the original post for some pictures and steps.
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12-01-2015, 09:20 AM | #8 |
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How many miles were on your car? Thanks for the DIY!
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12-01-2015, 09:23 AM | #9 | |
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*note I DD my car. It's on the highway driving 65-75 Mph at 2-3,000 rpm for 2 hours everyday during the week. If your car is not a DD then the life may be longer.
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12-01-2015, 02:14 PM | #10 |
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Thanks! Im at 69K miles and its my daily as well. About 45 mins one way at 70-80mph.
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12-01-2015, 03:15 PM | #11 |
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thanks for the DIY. does the star wrench go where the red dot is?
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12-01-2015, 03:20 PM | #12 | |
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12-29-2015, 12:11 PM | #13 |
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Maybe have shot myself in the foot. I noticed a faint squeak tonight. Also noticed on the E36 video it states they are supplied oil from the factory one time... I didn't oil mine up. Going to investigate it this weekend to see what needs to be done. - Update: 12/29 Squeal is back full force. I thought it was oil on the belt. Cleaned everything off after replacing the OFHG and it was gone but now it's back louder (assuming the messy oil was keeping the noise quiet). I don't see any oil leaking. So I'm going to replace the Power Steering pulley which I forgot to replace while I was in there. Hopefully that solves the problem and I don't have to replace the Alternator or AC Compressor just to solve a pulley bearing being noisy. Dackelone any thoughts?
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12-29-2015, 04:08 PM | #14 | |
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http://www.amazon.com/Lisle-52500-Me...ve+stethoscope Keep us updated!! Dackel
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12-29-2015, 05:16 PM | #15 |
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Or even just a piece of small vacuum line stuck in your ear works too.
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12-29-2015, 06:29 PM | #16 | ||
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03-17-2016, 10:48 PM | #17 |
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The star wrench is a T60 correct? and what is the the other type of wrench needed to take the tensioner and idler off?
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06-09-2016, 10:20 AM | #18 | |
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06-09-2016, 11:19 AM | #19 | ||
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08-16-2016, 07:34 PM | #21 |
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Did mine today. Had to disconnect the charge pipe at both ends and turn it out of the way in order to get the fan out. May have been able to force it, but just better to disconnect it. The clip that holds it to the rubber part on the fan housing just pops off easily if pried with a big screwdriver, so nothing to sweat there. Also, there wasn't 2 torx screws holding the fan in place...just the one shown at the top passenger side. Otherwise, was a pretty straightforward job. Was purely preventative maintenance - I had no noise or other signs of pending failure and the belt I removed appeared to be in great shape (~70K miles)
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07-29-2017, 01:30 PM | #22 |
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I performed this DIY today. I got everything changed out but I never did get the damn fan out. It looked like it was getting hung up on what looked like a couple of small radiator hoses near the bottom of the fan. One on each side. The fan was completely disconnected and I could move up a couple of inches before it seemed wedged by the hoses and oil cooler. I also disconnected the charge pipe from both ends of the intercooler trying to get more room.
I didn't want to force it out so I proceeded with the removal of the tensioner and pulleys. It was very tight working around the fan but it was completely doable with the fan still in there. 2011 135i DCT 93K Miles |
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