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Thread: BMW M62 Belt Tensioner Pulleys... These are apparently the right ones!

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    BMW M62 Belt Tensioner Pulleys... These are apparently the right ones!

    I'll find out soon enough, but I've got a couple noisy tensioner pulleys...

    The Dayco 89052 x 2 and Dayco 89144 (AC) are the "right" ones according to the BMW forums. They are really cheap (about $25 for the main belt each and 17 for the smaller AC one). 2 of my 3 are noisy and have play. I've got a new drivebelt on now, but my "2000-2500rpm" droning sound is still happening.

    The water pump has a very little bit of play (could hear it when moving it up/down but couldn't see it), everything else was tight as, which is nice.

    These tensioners are expensive to buy as a whole unit and replacing just the pulleys hopefully works well!

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    Funny you should post this now, I've just tracked down a nasty whine from my engine bay to my AC compressor and checked all my pulleys today. AC bearing is crusty as. Might order some spares, thanks for the part numbers.

    Regarding the compressor, MR Automotive here in QLD quoted me 3k for replacement... When i asked why a common Denso unit is $2200, when i can order one tomorrow for $400 to my door he said they only source genuine parts... hmm Land Rover tax, tasty.
    Another shop quoted me $1650 ballpark and I'm waiting for another quote to come back

    Might just source the parts and get a shop to fit. Whats the book time, a few hours? Its like 6 bolts.
    05 L322 Range Rover | BMW M62 4.4 | Cairns Blue
    07 Lexus GS450h | 2GR-FSE Hybrid | Blue Onyx Pearl

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    I’d also be interested to know about the pulleys.

    I replaced my water pump when I fitted a new alternator. The cost was minimal compared with the effort of going back in later. Mine had a little play in it, too.
    Ron B.
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    2003 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



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    I didn't have any pulleys on me when I did the belt! My belts were both very cracked, so it was a matter of time.

    It isn't a long job to pull the fan out and shroud, about 15mins out and back in so I'm not worried about that.

    The Dayco 89052 are metal apparently too rather than the existing plastic... There is a plastic variant too.

    The only way I can describe my noise is a "drive belt vibration" or "drive belt drone"... It only occurs under load and only at about 2000-2500 rpm... It might be the gearbox or torque converter or something too... But it is odd it only occurs under load which is driving me mad as nothing belt driven should suddenly be louder under acceleration vs coasting at the same rpm!

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    Confirmed that these pulleys work!

    Fitted them today... Very little difference in noise that I can hear, unfortunately. Only took an hour to do all 3.

    Next up is to buy a water pump and thermostat...

    Current pump isn't dead but does have a little bearing noise when spun fast by hand and has a little play up/down. I was going to leave it, but rather be safe than sorry.

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    Well...

    I got the water pump off today! Along with part of the coolant transfer pipe... Unfortunately enough broke off that it wouldn't be behind the o-ring... It is corroded badly anyway so it's dead.

    New non genuine one is $70 so that's cheap...

    Bad news is that I'm suspecting I probably won't be able to reuse the old o-ring in the coolant manifold in the rear, but I'm going to try and remove the existing pipe and see if the o-ring looks damaged... Not keen on pulling the manifold off...

    Drats.

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    Roverlord off road spares is offline AT REST
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    Quote Originally Posted by NUTTTR View Post
    Well...

    I got the water pump off today! Along with part of the coolant transfer pipe... Unfortunately enough broke off that it wouldn't be behind the o-ring... It is corroded badly anyway so it's dead.

    New non genuine one is $70 so that's cheap...

    Bad news is that I'm suspecting I probably won't be able to reuse the old o-ring in the coolant manifold in the rear, but I'm going to try and remove the existing pipe and see if the o-ring looks damaged... Not keen on pulling the manifold off...

    Drats.
    you'll find the pipe and o ring supplied is genuine.
    cheers Mario


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    Quote Originally Posted by Roverlord off road spares View Post
    you'll find the pipe and o ring supplied is genuine.
    cheers Mario
    Wow! That's impressive. I assumed the o-ring must have been genuine, but assumed pipe was non genuine given the cost! The BMW one is 246 from the dealer....ouch

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    Roverlord off road spares is offline AT REST
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    Quote Originally Posted by NUTTTR View Post
    Wow! That's impressive. I assumed the o-ring must have been genuine, but assumed pipe was non genuine given the cost! The BMW one is 246 from the dealer....ouch
    it was a clearance line


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    Quote Originally Posted by Roverlord off road spares View Post
    it was a clearance line
    Fine with me...until I need a second one and they are gone! (Joking, let's hope I never need another...)

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