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4x4abc
Date registered: Apr 2006
Location: La Paz, Baja California, Mexico
Vehicle(s): 02 G500
| G500 water pump, engine vibrations etc
sounds like my water pump is going out - characteristic noise and play in fan
does anyone have a pdf for the tear down?
Would the M112 pump fit?
Edited by 4x4abc 4/20/2015 2:21 PM
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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| RE: G500 water pump
4x4abc - 4/10/2015 10:20 PM
sounds like my water pump is going out - characteristic noise and play in fan
does anyone have a pdf for the tear down?
Would the M112 pump fit?
My guess is that the M112 pump should fit.
Email me your VIN, and I'll dig up the WIS procedure. |
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4x4abc
Date registered: Apr 2006
Location: La Paz, Baja California, Mexico
Vehicle(s): 02 G500
| RE: G500 water pump
so here is an update
before my water pump went out (noise and wiggly shaft), I had noticed 2 things:
the viscous coupling on the fan was frozen
the engine would display strong vibrations
after checking all diagnostics (all values were good) and not being able to find any cause for the vibrations, I suspected the constantly running fan
especially at startup the engine would run very rough.
then the pump went out
and immediately I thought, that maybe the same harmonics killed the pump bearing
now I have replaced the pump (a job from hell with 19 bolts) and the viscous
and the engine runs a smooth as a new one
no more vibrations at all
bottom line - if your viscous is dead, do not wait a single day to replace it |
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e300diesel
Date registered: Sep 2013
Location: Palo Alto, California
Vehicle(s): 03 G55AMG, 06 E320CDI; 17 Sprinter Roadtrek
| RE: G500 water pump
How many miles were you at? My mechanic has noticed bearing noise on my pump @108k on my2003 G55, but my viscous coupling and fan are new, the water pump however is not. He says replace soon, but I'm wondering how long I could wait since it's just a city car for me.
Vinay |
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AlanMcR
Expert
Date registered: Apr 2006
Location: US, CA, Los Altos
Vehicle(s): G300DT E300DT 230SL
Posts: 3500
| RE: G500 water pump
The concern is that a bearing failure can quickly become catastrophic. If the shaft gets out of position then the fan can tear up the radiator. I'd fix it now.
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4x4abc
Date registered: Apr 2006
Location: La Paz, Baja California, Mexico
Vehicle(s): 02 G500
| Re: G500 water pump, engine vibrations etc
I am close to 250k miles - I am with Alan, don't wait. Fix it now. |
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atg
Veteran
Date registered: Nov 2014
Location: Los Angeles
Vehicle(s): 2005 G55, 1985 300tdt
Posts: 129
| RE: G500 water pump
DUTCH - 4/11/2015 4:31 AM
4x4abc - 4/10/2015 10:20 PM
sounds like my water pump is going out - characteristic noise and play in fan
does anyone have a pdf for the tear down?
Would the M112 pump fit?
My guess is that the M112 pump should fit.
Email me your VIN, and I'll dig up the WIS procedure.
I have the WIS running on a virtual machine but I seem to have trouble finding specific procedures like this one. Is there a step by step example of how to get there? I know a few hours of trying would probably succeed but I rarely have that luxury.Thanks for any help.
PS I just noticed the g55 idling a bit rough when cold, so thanks for this thread. There was a hint of play in the pump pulley (but not alarming) when I changed the belt. How much is too much on that item? And is that idler really as crappy as everyone says? Thx. I am only at 55k!
Edited by atg 5/28/2015 6:36 AM
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4x4abc
Date registered: Apr 2006
Location: La Paz, Baja California, Mexico
Vehicle(s): 02 G500
| RE: G500 water pump
the procedure for the water pump is on the WIS - Dutch sent it to me (Thanks!)
is your fan clutch free when cold?
there should be no play in the pump shaft/bearing
the idler (and the one on the tensioner) are straight from hell
they fail without warning, leaving you stranded with an incredible mess under the hood |
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atg
Veteran
Date registered: Nov 2014
Location: Los Angeles
Vehicle(s): 2005 G55, 1985 300tdt
Posts: 129
| Re: G500 water pump, engine vibrations etc
Someone on here was selling aftermarket idlers. Who was that? Replaceable bearing. |
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DUTCH
Administrator Doppelgänger
Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
| Re: G500 water pump, engine vibrations etc
atg - 5/28/2015 8:49 PM
Someone on here was selling aftermarket idlers. Who was that? Replaceable bearing.
G-wagenaccessories.com |
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fernweh
Date registered: Apr 2006
Location: Calabasas, CA - Centenario, BCS - Luebeck, Germany
Vehicle(s): Few Mercedes-Benz, a Toyota Amphibious and a Vespa
| Re: G500 water pump, engine vibrations etc
DUTCH - 5/28/2015 6:28 PM
atg - 5/28/2015 8:49 PM
Someone on here was selling aftermarket idlers. Who was that? Replaceable bearing.
G-wagenaccessories.com
The 2005 G55 has a different Idler Pulley.... |
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4x4abc
Date registered: Apr 2006
Location: La Paz, Baja California, Mexico
Vehicle(s): 02 G500
| Re: G500 water pump, engine vibrations etc
are you saying, you don't have that one? |
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fernweh
Date registered: Apr 2006
Location: Calabasas, CA - Centenario, BCS - Luebeck, Germany
Vehicle(s): Few Mercedes-Benz, a Toyota Amphibious and a Vespa
| Re: G500 water pump, engine vibrations etc
4x4abc - 5/28/2015 9:09 PM
are you saying, you don't have that one?
Correct.
I believe pulley not plastic.
G55 mostly a city vehicle, never far away from a MB dealership.
Other pulley sets (different size) available for more "ummmhp" |
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atg
Veteran
Date registered: Nov 2014
Location: Los Angeles
Vehicle(s): 2005 G55, 1985 300tdt
Posts: 129
| Re: G500 water pump, engine vibrations etc
Is a plastic pulley somehow more reliable than a metal one?
The different sizes are for the crank and supercharger pulleys. Not so much the idlers.
Yes my supercharger idler is aluminum. Not sure about the one behind it.
https://www.dropbox.com/s/jinixlwxip38dm6/20150529_182649.jpg?dl=0
The fan is electric so no clutch.
Edited by atg 5/31/2015 11:27 AM
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