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Photo DIY- OM603.931 Glow plug change
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Posted 8/29/2010 2:04 AM
Allister779



Date registered: Sep 2007
Location: Alberta
Vehicle(s): 1990 300GD
500
Photo DIY- OM603.931 Glow plug change

So I thought I'd take a stab at one of these.  While testing some new trailer wiring I had done on the G I noticed the glow plug light was not functioning properly.  Bummer.  You can see what happened next.  A lot of people around here will say if one plug fails you should replace them all, and I think that is sound advice.  However, it's Saturday night, I have a sinus cold, and I only have one extra glow plug.  So after careful consideration, I decided that only changing one plug would be acceptable in this situation.

 

Standard disclaimer:  I'm no expert. This is only for entertainment. If you follow my instructions and things go down hill on you, don't blame me.  Use the proper manufactures instructions. 





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Attachments Glow plug change.001-001.jpg (66KB - 20 downloads)
Attachments Glow plug change.002-001.jpg (105KB - 16 downloads)
Attachments Glow plug change.003-001.jpg (115KB - 15 downloads)
Attachments Glow plug change.004-001.jpg (100KB - 12 downloads)
Attachments Glow plug change.005-001.jpg (93KB - 12 downloads)
Attachments Glow plug change.006-001.jpg (127KB - 14 downloads)
Attachments Glow plug change.007-001.jpg (98KB - 14 downloads)
Attachments Glow plug change.008-001.jpg (105KB - 11 downloads)
Attachments Glow plug change.009-001.jpg (118KB - 16 downloads)
Attachments Glow plug change.010-001.jpg (64KB - 16 downloads)
Attachments Glow plug change.011-001.jpg (77KB - 15 downloads)
Attachments Glow plug change.012-001.jpg (125KB - 12 downloads)
#176708
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Posted 8/31/2010 9:10 AM
G-AMG
G-Class DIY Host




Date registered: May 2006
Location: South Texas
Vehicle(s): '04 G55, '80 280GE, '99 S420, '98 E320, 2011 E350
1000
Re: Photo DIY- OM603.931 Glow plug change

PROPS!

Very Nice Write-Up, indeed.

Thanks for new addition to the otherwise quiet sub-forum.
#176792 - in reply to #176708
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Posted 8/31/2010 10:40 AM
dai
Expert




Date registered: Apr 2006
Location: Oregon USA
Vehicle(s): 300GD 300TD BMW R100RS Landini 80F
Posts: 2110
2000
Re: Photo DIY- OM603.931 Glow plug change

Great job. You can use a test light in the same way, at the plug socket at the relay box or touching each plug end if you don't happen to have a multimeter available.
When they start to go, I like to replace the set, if I have the time and the new plugs on hand. I test the ones I remove and keep the good ones around as spares for a quick fix.

-Dai
#176795 - in reply to #176708
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Posted 8/31/2010 12:20 PM
mortinson
Expert




Date registered: Apr 2006
Location: Madrid, España
Vehicle(s): '98 G300TD LWB, '98 E300TD Saloon
Posts: 1355
1000
RE: Photo DIY- OM603.931 Glow plug change

Excellent stuff! Problem is access to some of the glow plugs due to the inlet manifold. That's when the creativity with the extensions comes to the fore...
#176803 - in reply to #176708
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Posted 8/31/2010 12:26 PM
stevegsmith
Expert




Date registered: Apr 2006
Location: SF Bay Area, CA USA
Vehicle(s): 82 300GD WVO, 06 Jeep Lib CRD B99
Posts: 1301
1000
RE: Photo DIY- OM603.931 Glow plug change

Thanks man! Nice write up.
#176804 - in reply to #176708
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Posted 9/1/2010 12:10 AM
Allister779



Date registered: Sep 2007
Location: Alberta
Vehicle(s): 1990 300GD
500
Re: Photo DIY- OM603.931 Glow plug change

Thanks guys. I hope it helps somebody out along the way.
#176825 - in reply to #176708
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Posted 1/27/2011 8:00 AM
Inkblotz
Expert




Date registered: Apr 2006
Location: Georgia
Vehicle(s): 90 300GD "Thundering Turtle II", w/ 603A turbo
Posts: 3186
2000
Re: Photo DIY- OM603.931 Glow plug change

Allister

Great write up I will be doing mine this weekend. Funny my #4 plug is the bad one as well.

With my system, when there is a fault in the glow system the light will not come on at start up but once started the light comes on and remains on for 1 minute. Does your system do this?

Thank goodness I have the Espar aux heater that I turn on to heat the engine so I can start it for now till I replace the glow plugs.

Mark

Edited by Inkblotz 3/5/2011 9:15 AM
#183820 - in reply to #176708
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Posted 1/27/2011 11:58 PM
Allister779



Date registered: Sep 2007
Location: Alberta
Vehicle(s): 1990 300GD
500
Re: Photo DIY- OM603.931 Glow plug change

Yes Mark, when I've had glow plug lights fail the light does exactly what you've described.
#183878 - in reply to #176708
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Posted 1/29/2011 6:58 PM
Inkblotz
Expert




Date registered: Apr 2006
Location: Georgia
Vehicle(s): 90 300GD "Thundering Turtle II", w/ 603A turbo
Posts: 3186
2000
Re: Photo DIY- OM603.931 Glow plug change

Alister

Completed the new glow plug install this morning everything went as you described. Creative sockets and extenders made it go fairly easily. Though I only had one bad plug, I went ahead and replaced all of them. Thank goodness the nuts are attached to the wires as my big hands would never be able to reach in there and get them started. I found that by jamming a bit of black electrical tape into the socket(sticky side out) I was able to better control the plugs as well as the nuts.

Thanks again for the write-up.

Mark

Edited by Inkblotz 2/12/2011 7:55 AM
#184011 - in reply to #176708
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