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Farmall & IHC Tractors Discussion Forum
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glow plugs burn up

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jackinactonca

02-24-2007 23:09:43




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I have a B275 International. Problem is the glow plugs and the resistor burn up. Are they suppose to run on 6 volt or 12 volts?




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Fromjb2

02-25-2007 12:32:33




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 Re: glow plugs burn up in reply to jackinactonca, 02-24-2007 23:09:43  
Hi Jack, wiring of glow plugs:
#1 glow plug is closest to rad and #4 closest to battery box.

#1 wire from block on outside of insulator.
#1 engine side of insulator wire to #2 engine side of insulator.
#2 wire from outside of insulator to #3 outside of insulator.
#3 wire engine of insulator to #4 engine side of insulator.
#4 Black wire from Dash Resistor on outside of insulator.

Hope this helps
JimB

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Fromjb2

02-25-2007 08:50:34




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 Re: glow plugs burn up in reply to jackinactonca, 02-24-2007 23:09:43  
Hi Jack, once on B414D we had a glow plug short to precombustion chamber casting. It was second closest to the battery box and it would blow out the glow plug closest to the battery box.

Make sure you have them wire in series.

JimB



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jdemaris

02-25-2007 06:45:30




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 Should not be possible in reply to jackinactonca, 02-24-2007 23:09:43  
B-275 uses a 12 volt system but runs the glow plugs at only a couple of volts.

The glow-plugs are rated at less then one volt - 9/10 of a volt to be exact. .9 VDC at 40 amps, 18 mm thread with a 13/16" hex. Old number (from the 1960s) was Champion AG28. Later got changed to CH28, then #155, etc.

With the B-275, the glow-plugs are all run in series, along with the fifth heating-coil inside the dashboard.

If you've got them hooked correctly, it's not possible to burn them all up. Since they are in series, as soon as one goes bad, the rest no longer get any power.


Glow plugs are Champion AG28, CH28 ( #155). Bosch # : 0250001001 or 0250001010
Lucas: DS104 Beru: 214GK

Same plugs used in:

MERCEDES (Series) 17ODa. 17ODb, 17ODS, 17OS-D,180D,18ODb D5, 190D, 19ODb

INTERNATIONAL BDI44, BD154, B250, B27, B414, 424,
444, 2424. 2444, 3414, 3444, 364, 384, TD-5, 500,
Series, 7000

MERCEDES-BENZ Unimog: 411A, 8, C OM Series 83-
MEVOSA OM636
SEAT 132D, OM636

THERMO-KING NWD, UWD(Series)

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jdemaris

02-25-2007 11:01:13




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 Re: Should not be possible in reply to jackinactonca, 02-25-2007 10:15:13  
When all is correct, it takes 30 to 60 seconds to get the glow-plugs good and hot and make the resistor in the dashboard glow cherry-red.



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dave2

02-26-2007 15:42:05




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 Re: Should not be possible in reply to jdemaris, 02-25-2007 11:01:13  
May not be the same situation as yours, but the plugs for my German made model are real expensive and take a long time to work (so I'm told, mine didn't work at all when I got the tractor). The modification consisted of an adapter made from the originals that held a newer plug that gets much hotter. Wiring is direct to each plug from battery power(in my case, I ran a heavy gage wire from each one to a junction block with one wire running to battery power with a push button in between). Takes 5 to 15 seconds (depending on the outside temp) to heat things up. Seems to be easier on the battery too.

Good Luck,


Dave

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jdemaris

02-27-2007 06:03:52




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 Re: Should not be possible in reply to dave2, 02-26-2007 15:42:05  
If you wish to make adapters and rewire - you can put many types of glow-plugs in - and make it heat in 9 seconds instead of 30 to 60 seconds. Problem is - the faster you make it heat, the more likely it will be to burn out - unless you use an electronic timed controller. That's why the OEM system is slow - it is simple and fairly reliable. I use my glow-plugs a lot, even in the summer - and I've had very few glow plug failures. I think I've replaced two plugs - at $8 each in the past 10 years. I don't like the long heating time - but it's a trade off. The original glow-plugs are 9/10 of one volt and MUST be hooked in series so current flow is slowed down. You can install modern 10.5 volt glow-plugs - like used in Volkswagen cars and GM and Ford trucks - and hook them in parallel instead of series with NO resistor. IF you do that, you have to make sure you use only PTC (positive temperature coefficient) plugs that have built-in current-limiters. Even then, you do not want to use them more than 10 seconds at a time. One example, the AC Delco 60G (actually a German Beru plug) heats as follows:

AC60G (Beru) plug for 6.2 and 6.5 diesels
2 seconds - 10 volts, 8.6 amps and 807 degrees F
5 seconds - 10 volts, 8 amps and 1145 degrees F
9 seconds - 10 volts, 7.3 amps and 1545 degrees F
12 seconds - 10 volts, 7 amps, and 1716 degrees F

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Doc Larry

02-26-2007 16:59:50




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 Re: Should not be possible in reply to dave2, 02-26-2007 15:42:05  
Dave,

On this particular model the glow plugs must be wired in series with the dash resistor or they will melt immediately.

My impression is this varies from model to model. Not sure what you have.

Larry



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dave2

02-26-2007 18:43:57




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 Re: Should not be possible in reply to Doc Larry, 02-26-2007 16:59:50  
My model is supposed to be the same as you say. The original glowplugs would melt real quick also. When I got the adapters to use normal (cheaper) plugs, the guy told me how to wire them to get the best performance. My wiring was shot so I did it that way. I guess, if the wiring was OK, they would have worked just as well with original wiring (??). Guess the real moral of the story is the difference in price/availability of glowplugs.

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Doc Larry

02-26-2007 19:38:23




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 Re: Should not be possible in reply to dave2, 02-26-2007 18:43:57  
Dave,

It would make sense that different glow plugs would be wired differently. Do you happen to remember the number of the ones you put in?

Larry



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dave2

02-26-2007 20:57:43




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 Re: Should not be possible in reply to Doc Larry, 02-26-2007 19:38:23  
They fit a VW TDI motor. The Bosch number is:
GN 912 0100226188. You can probably cross reference to a common brand there.

Link
If you can open this link, go to the far right column (schrauber tips)and click the "gluhkerzen" link. This gives you a picture. The text just explains the use and says wire them direct.



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