Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Fluid Motor Union
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #41  
Old 06-29-2021, 01:48 AM
wpoll's Avatar
Member
 
Join Date: Sep 2015
Location: South Island, New Zealand
Posts: 3,841
wpoll will become famous soon enough
I too was going down this same path when my viscous fan clutch failed - in my case the bearing(s) went bad...

https://youtu.be/kdhRraCZorA

In the end I got a great deal on a new Hella viscous clutch (out of the UK), so I moved on to other maint items.

Also, while running with no fan for a week or two (in winter) I found the M57TU engine acoustic cover got uncomfortably hot along the front edge with no fan constantly pushing low velocity air over the cover. I'd seen a few melted covers, so I dropped the idea of the electric fan mod.
__________________
Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)
Reply With Quote

Sponsored Links

  #42  
Old 06-29-2021, 12:37 PM
workingonit's Avatar
Member
 
Join Date: May 2021
Location: DFW Texas
Posts: 125
workingonit is on a distinguished road
never had a clutch totally fail; does it freewheel or lock up?

Quote:
Originally Posted by wpoll View Post
I too was going down this same path when my viscous fan clutch failed - in my case the bearing(s) went bad....
I had previously replaced clutch fans to gain power, ability to cool without the engine running, or to switch to an electric water pump (no pulley, no mechanical drive for fan). Never waited for possible failure, before.

The guy I swapped cars with said it had always been noisy, but hadn't gotten any noisier during his ownership/restoration time, so he assumed all BMW clutch fans were this loud.

I spun the fan by hand, detected no bearing noise (not able to spin it fast, since it had normal viscous resistance), and no detectable wobble (even when running).

Nevertheless, I'm not going to keep the viscous (maybe "vicious"??, in reality) clutch, and later regret it when it blows and takes out multiple/expensive items with it.

P.S. I found a molded shroud on Amazon, ostensibly made to fit the OEM radiator, for less. Might just try it. "Topaz" branded (a good omen for my Topaz-blue X5), perhaps.

UPDATE: Despite the heat and humidity, I searched my tools and found a 32mm wrench, so I'll just need a "real" holder for the clutch/water pump bolts (tried a long screwdriver, once, but nearly poked a hole in the radiator); checked the wrench's fit, and it will work, even though the clutch fan had obviously been removed with a pipe wrench before.

The clutch is as I described, feels normal, but I noticed two fan blades have about 1" of material broken off (a long time ago, by the coloration). I won't need a new fan shroud, this one looks perfect; so I'll order a fan next week, and get to it.
__________________
2001 BMW X5 - E53 w/3.0i M54,
topas-blau, Leder-Montana grau
(Born on 2001-07-13, Friday the 13th)

Last edited by workingonit; 06-29-2021 at 02:20 PM. Reason: more info
Reply With Quote
  #43  
Old 06-29-2021, 02:17 PM
Member
 
Join Date: Nov 2014
Location: SF Bay Area
Posts: 1,308
oldskewel is on a distinguished road
Quote:
Originally Posted by workingonit View Post
...
I haven't removed the radiator cover to measure clearances, but I found this photo of a M54 after the clutch fan was removed...
I'm honored to see that someone is using my photo of removing the crank pulley bolt.

Just to be clear though, in that pic, it is the AC condenser that you see at the front (bottom of pic). The radiator has been removed, along with the clutch fan and shroud, of course.

I'll add that my clutch fan is original at almost 200k miles, and working very well and quietly. If I had one that felt smooth and tight, but was loud, I'd first try to replace the silicone oil in it. They are very simple devices, and unless the bearings wear out, or seals fail and can't hold the oil in, should be repairable. But that's me - I prefer to repair quality things rather than replacing them, maybe even when it is not cost effective.
__________________
2001 X5 3.0i, 190k miles, AT, owned since 2014
Reply With Quote
  #44  
Old 06-29-2021, 02:48 PM
Member
 
Join Date: Nov 2014
Location: SF Bay Area
Posts: 1,308
oldskewel is on a distinguished road
On the 32 mm wrench, I found on mine that a 1-1/4" wrench is just a little tighter (=31.75 mm), but still fits over the fan nut. So it's a tighter fit when on there. And that's important if going for the impact solution where you just hit the wrench with a mallet to loosen the nut.

So I don't use a holder at all, not even a screwdriver. Fan belt still on (provides some resistance). Open end 1-1/4" wrench on the nut. Hit hard to the right (since the nut threads are left-handed) with a rubber mallet, and it always comes off. Then when reinstalling, I use copper antiseize, spin the fan on by hand, and give the nut barely any torque at all to finish. (ensures easy removal next time I'm in there)

And good find on the broken fan blades - that will definitely cause a problem that makes some noise.
__________________
2001 X5 3.0i, 190k miles, AT, owned since 2014
Reply With Quote
  #45  
Old 06-30-2021, 08:15 PM
workingonit's Avatar
Member
 
Join Date: May 2021
Location: DFW Texas
Posts: 125
workingonit is on a distinguished road
I was starting to reconsider the conversion to electric when I found many stories of even new viscous clutch failures. Probably a small %, and most likely sub-oem quality , but still new. And the plastic bladed fan, again probably mostly non-oem, really inspires little confidence in me. Then there's the wear and tear on the water pump, as a defective or out-of-balance fan assembly wobbles at high speed.

Best bet is to bite the bullet and go full conversion. My X5 will probably sit a month until I get all the parts, because my wife insists her Cobalt is next for repair (Master Cylinder, ABS, power flush & fill).

Though the X5's fan is already disintegrated, I'll leave it on for dire emergency usage, in the remote chance that the other three working vehicles cease to work.

Sent from my SM-G955U using Xoutpost.com mobile app
__________________
2001 BMW X5 - E53 w/3.0i M54,
topas-blau, Leder-Montana grau
(Born on 2001-07-13, Friday the 13th)
Reply With Quote
  #46  
Old 07-09-2021, 11:33 AM
workingonit's Avatar
Member
 
Join Date: May 2021
Location: DFW Texas
Posts: 125
workingonit is on a distinguished road
parts ordered, can't wait

Quote:
Originally Posted by workingonit View Post
...Best bet is to bite the bullet and go full conversion. My X5 will probably sit a month until I get all the parts, because my wife insists her Cobalt is next for repair (Master Cylinder, ABS, power flush & fill).

Though the X5's fan is already disintegrated, I'll leave it on for dire emergency usage, in the remote chance that the other three working vehicles cease to work.
Well, I went ahead and ordered the parts earlier than expected. I'm putting-off the Cobalt brake overhaul another week, until I can get help from a friend. So, I'll soon be installing the new fan, and can drive the X5 (I've only driven it 11 miles since I traded for it with that friend). And, I also ordered a replacement for a broken intake tube, and another tool (never enough) for my X5 kit.

I'm sure I'll need to fabricate something or another to make it work, but I've installed probably 15 on other vehicles, before.
Attached Images
  
__________________
2001 BMW X5 - E53 w/3.0i M54,
topas-blau, Leder-Montana grau
(Born on 2001-07-13, Friday the 13th)
Reply With Quote
  #47  
Old 07-09-2021, 12:27 PM
bcredliner's Avatar
Premier Member
 
Join Date: Jun 2008
Location: Little Elm,Texas. (40 minutes North of Dallas)
Posts: 7,595
bcredliner is on a distinguished road
I think you will be very happy with the electric fan. I am extremely pleased with the one I have had for many years. Suggest you wire it so it runs after key is off as it address heat soak that way. No problem with the battery. I set mine so that it comes on just before the front pusher fan comes on. While there are many different opinions you gain some HP and TQ. In addition, the water pump should last longer.
__________________
X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas
Reply With Quote
  #48  
Old 07-09-2021, 05:07 PM
workingonit's Avatar
Member
 
Join Date: May 2021
Location: DFW Texas
Posts: 125
workingonit is on a distinguished road
heat soak problem on M54??

I haven't investigated heat soak on my M54 engine...is it a problem? I haven't looked for the starter yet (too much plumbing in the way), but photos of a M54 (in an E46) show it under the intake, where it shouldn't be so bad (unlike Chevy/GMC starters always near the exhaust or exhaust manifolds.

I always get around to wrapping my GM car/truck starters with reflective wrap, if there's a history of heat soak (2.8l V-6, 327 cu.in., 350 (plus overbores) cu.in., 427 (plus overbores) cu.in.). My 6.0l LS engine in my '04 2500HD really doesn't need one; nor do the Ecotec 2.2l engines in the little cars.

So far, I've not found a recurrent problem with the M54 starter, while searching...there usually is a low battery involved.
Attached Images
 
__________________
2001 BMW X5 - E53 w/3.0i M54,
topas-blau, Leder-Montana grau
(Born on 2001-07-13, Friday the 13th)
Reply With Quote
  #49  
Old 07-09-2021, 08:07 PM
bcredliner's Avatar
Premier Member
 
Join Date: Jun 2008
Location: Little Elm,Texas. (40 minutes North of Dallas)
Posts: 7,595
bcredliner is on a distinguished road
Quote:
Originally Posted by workingonit View Post
I haven't investigated heat soak on my M54 engine...is it a problem? I haven't looked for the starter yet (too much plumbing in the way), but photos of a M54 (in an E46) show it under the intake, where it shouldn't be so bad (unlike Chevy/GMC starters always near the exhaust or exhaust manifolds.

I always get around to wrapping my GM car/truck starters with reflective wrap, if there's a history of heat soak (2.8l V-6, 327 cu.in., 350 (plus overbores) cu.in., 427 (plus overbores) cu.in.). My 6.0l LS engine in my '04 2500HD really doesn't need one; nor do the Ecotec 2.2l engines in the little cars.

So far, I've not found a recurrent problem with the M54 starter, while searching...there usually is a low battery involved.
Heat soaking is not a problem but I think it is better over the long haul that it is not taking place.
__________________
X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas
Reply With Quote
  #50  
Old 07-09-2021, 09:33 PM
workingonit's Avatar
Member
 
Join Date: May 2021
Location: DFW Texas
Posts: 125
workingonit is on a distinguished road
planned wiring for fan

bcredliner- where did you get your switched power source from, or is it entirely controlled by the thermoswitch? I usually find a non-critical power source underhood (switched on by ignition in acc, run, or start)(85) to power the relay, and I'll use the jumper posts already there for the main power(30) and ground(86).

The optional override switch(also 85), will be tied to the cigarette lighter (which powers off, "sleeps", after 16 minutes, so if I choose to, I'll switch it on to let the fan run 16 minutes after the engine's off.

So, if I can't find a switched power source underhood, I'll tie (85) back into (30), and let the thermoswitch control it all by temperature (but I'm fearful that it might fail, and leave the fan running for hours). I've always been able to locate switched power underhood before, but it's obscured in the X5.

UPDATED WIRING: Top drawing is info that came with the relay kit, second drawing is how I first installed it (bad manual switch was replaced), and third drawing shows the final wiring with switched power and adjustable thermostatic switch added.
Attached Images
   
__________________
2001 BMW X5 - E53 w/3.0i M54,
topas-blau, Leder-Montana grau
(Born on 2001-07-13, Friday the 13th)

Last edited by workingonit; 07-20-2021 at 04:13 PM. Reason: added diagrams
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 07:21 PM.
vBulletin, Copyright 2021, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.