Glow Plug Indicator?: Shibaura  -- Other Tractor Brands Discussion Forum and Review Glow Plug Indicator?: Shibaura -- Other Tractor Brands Discussion Forum

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 10-22-2008, 20:01 Post: 157450
Airport



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 Glow Plug Indicator?

My glow plub indicator does not function. The plugs get juice and everything is normal but again no indication. Is this a parallel or series device? A guy with the same engine on a Ford said his indicator was hard to see but he could feel the heat. Mine does not get warm or indicate anything. Anybody got a schematic? Thanks in advance Ron






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 10-22-2008, 23:20 Post: 157452
greg_g



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 Glow Plug Indicator?

Check the bulb receptacle first. I had this problem with my Yanmar. Turned out to be oxidation in the receptacle (the white stuff). It either prevented voltage from getting to the bulb tip, or prevented the base from connecting with ground. Maybe both. All I had to do was clean the receptacle, and it started working again.

//greg//






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 10-23-2008, 08:03 Post: 157454
candoarms



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 Glow Plug Indicator?

Airport,

I doubt that the indicator would be in series with the glow plugs. In such a case, a burned out bulb would prevent the glow plugs from heating. There would be other problems associated with a series arrangement, as well.

The indicator is most likely a parallel arrangement. This would allow the bulb to light when power is going to the glow plugs, without interfering with the operation of the glow plugs, should the indicator fail.

Greg is correct. Your indicator is probably the culprit. Could be a broken wire going to the bulb socket, dirty bulb contact terminals, faulty bulb housing ground, or simply a burned out bulb.

If your indicator housing has only one wire going to it, make sure you have 12vdc to that wire, when the glow plugs are activated. If you have a single wire configuration, the bulb socket serves as the ground. Make sure your bulb socket and the mating tractor attachment point are both clean and free of any rust or corrosion.

If you have a 2-wire configuration, the ground wire will return to the frame of the tractor at some other location. Be sure to check that remote ground connection for rust or corrosion. (A 2-wire configuration is found on most tractors with a plastic dashboard, on which no ground is available.)

Hope you get it figured out.

Joel






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 10-23-2008, 11:04 Post: 157459
AnnBrush



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 Glow Plug Indicator?

The glow plug indicator on a Ford 1500 (1982) with a Shibaura engine was a small piece of coiled heating element housed in a metal cylinder just below the dash - You could feel the heat and see the coil glow when it heated red hot. Was it in series or parallel or relayed with the actual glow plugs - I don't know but it sure could have been in series. If your glow plugs are operational and the indicator is not then you have a parallel set-up, as an open circuit in series kills the whole shebang.






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 10-23-2008, 18:10 Post: 157461
earthwrks

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 Glow Plug Indicator?

My '02 New Holland TC33D has had issues with the glow plug relay timer module--most times it won't come on--sometimes it won't turn off. PIA! Dealer wants $153 for the module. It'll wait 'til spring.






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 10-23-2008, 20:57 Post: 157464
Airport



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 Glow Plug Indicator?

Just to clarify. I note my indicator is the coil type and not a edison type bulb. I have not gotten to the back of the panel yet but I was curious how it was supposed to work or if they go defective. I witnessed last week a similar setup on a Ford with a Shibaura engine. In the daylight it was hard to see any indication but unlike mine you could feel the warmth after a few seconds. Since mine doesn't glow or get warm I would like to find out how it is supposed to work and make the necessary repairs. I usually do a manual glow of about 20 sec in normal Temperatures and she fires up after a couple of seconds. Sometimes it takes a little longer. But I never see or feel anything on the indicator. I have varified that there is current flowing to the plugs with a test lamp and varified the plugs are good. Sure would like to see a diagram if someone has one. I guess I am going to have to find the time to get into the panel to see what is going on. The operation reminds me of an old diesel truck I had. The modules kept going out until finally I just used a solenoid to turn on the plugs manually. Something like 40 sec cold, 20 sec warm and maybe none for a just shut off engine.

The Ford operator says his engine is and always has been a little hard to start even with plugs normal. He and I have been spoiled from having owned tractors like a Massey 245 that didn't use plugs and was like turning on an Electric motor.






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 10-24-2008, 09:55 Post: 157468
Murf

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 Glow Plug Indicator?

The down 'n' dirty way to tell is to put a digital voltmeter on the battery and cycle the glow plugs.

The draw will be very visible on the battery voltage as the coils warm up.

Best of luck.






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Discussion Boards > Active Subjects > Messages as Posted > Shibaura Forum

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Airport 2 | AnnBrush 1 | candoarms 1 | earthwrks 1 | greg_g 1 | Murf 1 |




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