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E60 (2004 - 2010)
BMW 5-Series (E60 chassis) was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E60 is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 09-12-2012, 03:35 AM
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kskane kskane is offline
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Belts

Guys, what is the lifetime of all the belts (alternator, AC belt etc) on a BMW 5 series? Or should I ask if these needs to be replaced at certain KM's?
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  #2  
Old 09-12-2012, 10:11 AM
bimmerfan52 bimmerfan52 is offline
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Quote:
Originally Posted by kskane View Post
Guys, what is the lifetime of all the belts (alternator, AC belt etc) on a BMW 5 series? Or should I ask if these needs to be replaced at certain KM's?
Depends upon how much you drive and conditions. Belts should be examined carefully every time you change your oil. If you see any fraying, chunks missing or any cracking replace them soon. Severe conditions like ambient temperatures below -30F would warrant more frequent changes.

Normally five years or 100KMs is the longest you would want to go. Belts are cheap and I would say more like 65-70KM or four years.

But be cognizant of opportunities. When I had to replace my alternator I decided to do the water pump and thermostat as PM and without any evidence of their having been replace in the last 40K miles I did both the serpentine and AC belts.

TIP: Carefully wrap up the old belts and store them in your trunk for an emergency. Beats being stranded on the road two days waiting for an overnight freight delivery of a replacement belt. I added a T-60 bit and socket driver to the breaker bar I carry to change tires and now I can do the serpentine belt myself on the road (T-60 to loosen belt tensioner).
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  #3  
Old 09-14-2012, 04:33 AM
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kskane kskane is offline
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Quote:
Originally Posted by bimmerfan52 View Post
Depends upon how much you drive and conditions. Belts should be examined carefully every time you change your oil. If you see any fraying, chunks missing or any cracking replace them soon. Severe conditions like ambient temperatures below -30F would warrant more frequent changes.

Normally five years or 100KMs is the longest you would want to go. Belts are cheap and I would say more like 65-70KM or four years.

But be cognizant of opportunities. When I had to replace my alternator I decided to do the water pump and thermostat as PM and without any evidence of their having been replace in the last 40K miles I did both the serpentine and AC belts.

TIP: Carefully wrap up the old belts and store them in your trunk for an emergency. Beats being stranded on the road two days waiting for an overnight freight delivery of a replacement belt. I added a T-60 bit and socket driver to the breaker bar I carry to change tires and now I can do the serpentine belt myself on the road (T-60 to loosen belt tensioner).
Thanks for you input BimmerFan32. Is there a DIY with pics and instructions on how to install the belts back on to the right tension for both AC and Alternator.
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  #4  
Old 09-14-2012, 09:29 AM
bimmerfan52 bimmerfan52 is offline
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Quote:
Originally Posted by kskane View Post
Thanks for you input BimmerFan32. Is there a DIY with pics and instructions on how to install the belts back on to the right tension for both AC and Alternator.
Not necessarily specific to belts.

Several for alternator and water pump which of course require removal of at least the serpentine belt. Use the search feature for the two forums and you will find a number of them.

Your 6-cyl AC belt has a tensioner. The AC belt on my 8-cyl has no tensioner and is a real PITA to put back on.
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  #5  
Old 09-15-2012, 04:56 PM
kelhasna kelhasna is offline
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  #6  
Old 09-20-2012, 08:03 PM
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kskane kskane is offline
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Are OEM belts okay, should get it from BMW?
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  #7  
Old 04-27-2013, 07:52 AM
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kskane kskane is offline
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Quote:
Originally Posted by kskane View Post
Are OEM belts okay, should get it from BMW?
After a bit of research, I found the OEM belts are made by Contitech. Has anyone used Contitech or Optibelt brands? Please share your experience.
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  #8  
Old 04-30-2013, 10:01 AM
bimmerfan52 bimmerfan52 is offline
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There are many good belt manufacturers. I used Dayco when I changed out my alternator (repair) and water pump/thermostat (PM while I had it apart). As an aside I used that piece of crap Beck Arnley thermostat and the heater coil in it didn't last a week and threw an emissions CEL. Went back to an OE Wahler unit.

Dayco belts were $14 for serpentine belt and $6 for AC belt. The old belts are in my trunk as backup.

There was a guy on the forum a couple of months ago with a 545i who was going to add a belt tensioner to the AC belt to avoid having to go through the PITA of stretching the AC belt during installation. I never followed up to see if he was successful.

Cheers
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  #9  
Old 05-01-2013, 10:15 AM
H F H F is offline
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[QUOTE=bimmerfan52;7553398]There are many good belt manufacturers. I used Dayco when I changed out my alternator (repair) and water pump/thermostat (PM while I had it apart). As an aside I used that piece of crap Beck Arnley thermostat and the heater coil in it didn't last a week and threw an emissions CEL. Went back to an OE Wahler unit.

Dayco belts were $14 for serpentine belt and $6 for AC belt. The old belts are in my trunk as backup.

There was a guy on the forum a couple of months ago with a 545i who was going to add a belt tensioner to the AC belt to avoid having to go through the PITA of stretching the AC belt during installation. I never followed up to see if he was successful.

Cheers[/QUOT
That was me ,, the ac tensioner are the same .. Ill post up pics and ac belt number later today when I get hm. For anyone interested
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  #10  
Old 05-01-2013, 10:30 AM
SKEC SKEC is offline
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I am planning to get my belt replaced also, currently at 60k miles, 08' 535, still have a year of cpo left, how much does dealer charge to replace all belts? And it doesn't covered by cpo warranty right?
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  #11  
Old 05-01-2013, 05:35 PM
H F H F is offline
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Here's pic's of the ac tensioner and one pic where it bolts to the block.. The belt I used is Continental CONTITECH # 4pk860
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  #12  
Old 05-01-2013, 07:08 PM
bimmerfan52 bimmerfan52 is offline
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Nice HF -

Did you have to move anything to make room to bolt it on?
Is there any fastening hdwe required or does it all come with the part?
I think in your original post you said you bought the part out of a junk yard?

Thanks
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  #13  
Old 05-01-2013, 09:56 PM
H F H F is offline
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Quote:
Originally Posted by bimmerfan52 View Post
Nice HF -

Did you have to move anything to make room to bolt it on?
Is there any fastening hdwe required or does it all come with the part?
I think in your original post you said you bought the part out of a junk yard?

Thanks
hmm,,, u know bro , might b someone else ur thinking of ,, Lol ...I had it installed after both my belts shreaded apart and jacked up my water pump, after I installed my alternator... But any how,, mine was brand new ,,it bolts right on,, same tensioner as the original one.. I believe there's an update for the ac tensioner,,, I dont know the update number for it though ...
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  #14  
Old 05-02-2013, 12:38 AM
bimmerfan52 bimmerfan52 is offline
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Quote:
Originally Posted by H F View Post
hmm,,, u know bro , might b someone else ur thinking of ,, Lol ...I had it installed after both my belts shreaded apart and jacked up my water pump, after I installed my alternator... But any how,, mine was brand new ,,it bolts right on,, same tensioner as the original one.. I believe there's an update for the ac tensioner,,, I dont know the update number for it though ...
Sorry dude I must be thinking of a different thread

When I saw your photos labeled "AC tensioner" I figured you were the guy that retrofitted a 745i AC belt tensioner onto your engine.
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  #15  
Old 05-02-2013, 01:07 AM
H F H F is offline
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Quote:
Originally Posted by bimmerfan52 View Post
Sorry dude I must be thinking of a different thread

When I saw your photos labeled "AC tensioner" I figured you were the guy that retrofitted a 745i AC belt tensioner onto your engine.
Actually I think i remember that guys thread... any ways its the same tensioner.. so dont think he had to retofit much...
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  #16  
Old 05-14-2013, 07:13 PM
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kskane kskane is offline
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Replaced the Engine belt with OEM ContiTech and the AC belt with Optibelt last week. It was easy to get the belts off but PITA to align the new belts back on.

Question I have, do the belts need to go in particular direction? Is it possible to install them in the wrong direction?
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  #17  
Old 05-14-2013, 10:29 PM
bimmerfan52 bimmerfan52 is offline
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Hey Mate!

I didn't find the serpentine belt too bad to put with the tensioner locked back, but that AC belt is a total PITA!

The 545i engine (N62B44) is supposed to have a threaded hole in the engine for a tensioner for the AC belt as the same engine used on the 7 series has an AC belt tensioner. But I have not been under there in a while to look.

In answer to your questions, it depends upon whether it is brand new or used. There is no direction to the belt when installing it new. But once used, if you need to remove it and then reinstall it you should mark the direction on the belt before removing it so you can install it in the same direction.

I saved my old belts as backups for the trunk and have the direction marked on them. I would hate to be out of town, break a belt and have to wait over a weekend for a $15 belt to be air freighted to me.

Cheers !
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  #18  
Old 05-14-2013, 11:39 PM
SlvrBmr545 SlvrBmr545 is offline
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bimmerfan52 great idea about keeping an old set in your trunk as backup !!
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  #19  
Old 05-15-2013, 05:23 PM
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kskane kskane is offline
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Quote:
Originally Posted by bimmerfan52 View Post
Hey Mate!

I didn't find the serpentine belt too bad to put with the tensioner locked back, but that AC belt is a total PITA!

The 545i engine (N62B44) is supposed to have a threaded hole in the engine for a tensioner for the AC belt as the same engine used on the 7 series has an AC belt tensioner. But I have not been under there in a while to look.

In answer to your questions, it depends upon whether it is brand new or used. There is no direction to the belt when installing it new. But once used, if you need to remove it and then reinstall it you should mark the direction on the belt before removing it so you can install it in the same direction.

I saved my old belts as backups for the trunk and have the direction marked on them. I would hate to be out of town, break a belt and have to wait over a weekend for a $15 belt to be air freighted to me.

Cheers !
Thanks Mate for your wise advise as usual, as I was starting to panic if I installed the new belts in wrong direction. My AC belt has a tensioner, so not that bad, but for some reason I really had to pull the new belt over the pulley. Serpentine was easier than the AC. The difficult part for me was to align and hold the new belt in place as they were new and never used, the belt had a mind of its own and would not stay in place. The darkness did not help either I have kept my old belts in the boot as you had suggested earlier.

Anyways, it is done, and glad to have done it myself. 4 years ago when I bought the car the serpentine belt was changed at the time by an Indy who charged me about 250 bucks for it in parts and labor (just for one belt) and thanks to all the help here to all the guys and little effort with DIY this time it has costed me only $27 in parts that too OEM brand.
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Old 05-16-2013, 07:02 AM
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Hogie Hogie is offline
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Quote:
Originally Posted by H F View Post
Here's pic's of the ac tensioner and one pic where it bolts to the block.. The belt I used is Continental CONTITECH # 4pk860
Hey - I remember the older post of the guy using a 745i approach to add the same tensioner to the 545i compressor pulley.

I am changing waterpump and other items starting today. I do want to switch from the Stretch Belt which I replaced about 6 months ago and was aPIA even with the right tool.

Since the 545i does not have a P/N for this tensioner did you just ask for a 745i one?
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Old 05-16-2013, 07:46 AM
bimmerfan52 bimmerfan52 is offline
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Quote:
Originally Posted by Hogie View Post
Hey - I remember the older post of the guy using a 745i approach to add the same tensioner to the 545i compressor pulley.

I am changing waterpump and other items starting today. I do want to switch from the Stretch Belt which I replaced about 6 months ago and was aPIA even with the right tool.

Since the 545i does not have a P/N for this tensioner did you just ask for a 745i one?
Real OEM lists the belt for a 2002 745i AC belt tensioner as PN 11287549589, hex bolt to attach tensioner as PN 07119905641 and AC belt as PN 11287631814.

PS - When changing the water pump handle that crankshaft harmonic balancer like your Grandmother's prized vase - if dropped it may need to be replaced (big bucks). And if your vent tube is still original do yourself a favor while you have it apart and change it too if you haven't already planned to.
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Old 05-16-2013, 08:33 AM
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Hogie Hogie is offline
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Quote:
Originally Posted by bimmerfan52 View Post
Real OEM lists the belt for a 2002 745i AC belt tensioner as PN 11287549589, hex bolt to attach tensioner as PN 07119905641 and AC belt as PN 11287631814.

PS - When changing the water pump handle that crankshaft harmonic balancer like your Grandmother's prized vase - if dropped it may need to be replaced (big bucks). And if your vent tube is still original do yourself a favor while you have it apart and change it too if you haven't already planned to.
I went to realoem too in an attempt to identify. The P/N belt H F used the 4PK860 crosses to a BMW P/N 11287512971. The tensioner below is the 745i but up to 10/2003 date. My N62 is a 5/2004. Its probably the right one but wanted to confirm.

Thanks and yes I have the new vent tube as mine broke at 80K miles and I now have 187K.

11287549589 Belt tensioner
X5 4.8is (N62). Required: 1
745i Automatic (N62) Sedan. Up To 10/2003 . Required: 1
More Details...
$111.47 11287549589
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  #23  
Old 05-16-2013, 09:04 AM
H F H F is offline
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Quote:
Originally Posted by Hogie View Post
I went to realoem too in an attempt to identify. The P/N belt H F used the 4PK860 crosses to a BMW P/N 11287512971. The tensioner below is the 745i but up to 10/2003 date. My N62 is a 5/2004. Its probably the right one but wanted to confirm.

Thanks and yes I have the new vent tube as mine broke at 80K miles and I now have 187K.

11287549589 Belt tensioner
X5 4.8is (N62). Required: 1
745i Automatic (N62) Sedan. Up To 10/2003 . Required: 1
More Details...
$111.47 11287549589
The tensioner is the same one used for the serpentine belt , both tensioner s are identical . There's an update for the ac tensioner , but I don't know the update number
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  #24  
Old 05-16-2013, 09:49 AM
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Hello H F

Thanks for the quick reply. I did some quick comparisons and the 745i definitely uses the same Serpentine tensioner as the 545i, its a 11287549588. But the A/C tensioner on several resource sites is one digit higher, ending in 589 rather than 588. The orientation seems slightly different for the locking tabs.

Is it possible that you used a 589 and the serpentine still ends in 588?

11287549589 - A/C tensioner for N62
11287549588 - Serpentine for N62 (745i and 545i)

Thanks
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Old 05-16-2013, 12:47 PM
H F H F is offline
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Quote:
Originally Posted by Hogie View Post
Hello H F

Thanks for the quick reply. I did some quick comparisons and the 745i definitely uses the same Serpentine tensioner as the 545i, its a 11287549588. But the A/C tensioner on several resource sites is one digit higher, ending in 589 rather than 588. The orientation seems slightly different for the locking tabs.

Is it possible that you used a 589 and the serpentine still ends in 588?

11287549589 - A/C tensioner for N62
11287549588 - Serpentine for N62 (745i and 545i)

Thanks
.
Possibly , not really sure bout that, alls I know is that the ac and serpentine tensioner were identicle,,, wish I could some how find the update for the ac tensioner to clarify it ,
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