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#1
12-28-2013, 09:39 PM
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anyone convert there mechanical tensioners?
BMW E53 X5 M54 3.0L Engine Drive Belts ES#517967 Hydraulic Alternator Belt Tensioner Conversion Kit - 11287838797
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 2003 bmw x5 3.0i ,219000km build date 2003-08-18
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#2
12-28-2013, 10:19 PM
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never knew the M54 had mechanical ones.
I think even my M70 has hydraulic ones. I THINK. I've not had to replace them lately 
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I swear, my cars are like a girlfriend. Sometimes its a rough ride, sometimes its smooth motorin'. Sometimes she doesnt like how i treat her and sometimes i dont like how she behaves. BUT at the end of the day, she loves it when I am inside her. _______________________ '91 850i '05 X5 4.4i '09 Clubman S
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#4
12-29-2013, 12:29 PM
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Do you need to hook it up to an oil line?
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD
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#5
12-29-2013, 12:38 PM
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^No you don't.
The benefit of a hydraulic tensioner is that you can replace the bearing down the road when it goes bad instead of the whole tensioner. Some E39s came with hydraulic tensioner while others came with mechanical ones.
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 00 E39 DINAN S1 //M5 (82k miles) 06 E53 DINAN 4.8iS, born 2/18/2006 (126k miles) http://www.xoutpost.com/bmw-sav-foru...s-my-dslr.html 90 Straman Z32 TwinTurbo Convertible, (1 of 44 ever made) 5 speed, 444rwhp/451rwtq 01 360 Novitec Spider F1 (26k miles)
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#7
12-29-2013, 02:29 PM
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I think theres a different couple bolts but it is no different in mounting IIRC.
Some later build E53's came standard with hydraulic tensioner, I would pop the intake shroud off and have a look and see if you can tell if yours has a mechanical one or not, my indy did my tensioners, pulleys and belts last year and although I bought a hydraulic tensioner "conversion kit" from ECS, I was pretty sure he told me that I had a hydraulic tensioner from the factory.
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2018 Ram 2500 6.7L Cummins 68RFE 19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed 2013 X5 35D (CEO's) - Born on 5/17/2013 - 82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards
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#9
12-30-2013, 03:56 PM
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The reason BMW changed the mechanical tensioner to hydraulic tensioner on the M54 engine is due to warping of the OFH. The mechanical tensioner has 2 points of attachment, the hydraulic tensioner has 3 points of attachment with a stronger bracket. When the OFH starts to warp (due to the only 2 points of tightening), there will be noise coming from the front of the engine, very hard to pinpoint. Might sound like a failing WP bearing. BMW issued a service bulletin (SIB 11 04 03), which has the subject as "Noise complaints from mechanical alternator belt tensioners".
This thread created by Eurodavid has the issue with the fix on Page 3 - it's post #46. In detail.
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Stable: e92is, e46 M54B25, e83 N52, e53 N62 - sold, e39 M54B30 R.I.P.
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