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 07-08-2002, 18:17 Post: 40163
sullivan-dave



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 New Holland Starting Problem

My used New Holland 1630 keeps blowing the main 30-amp fuse when I try to start engine. The glow plug indicator lights for about 5 seconds, then the fuse goes. I have been able to start a couple of times. I have been running this machine for 40 hours without a problem. How can I fix?






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 07-08-2002, 21:13 Post: 40176
Peters

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 New Holland Starting Problem

The glow plug is essentually a filament like that in a light bulb with out a vacuum. I would guess that you could have had the glow plug break and shorten causing an increase in current to the plug.
Does the plug come on automatically delaying the start? My pickup and tractor do but I can turn through and start. I only use the plugs in the winter.






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 07-09-2002, 13:25 Post: 40197
sullivan-dave



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 New Holland Starting Problem

Thanks for the information.
Is there anything I should be concerned with when removing and inspecting the glow plugs? What would a ?good? plug look like? thanks, dave






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 07-09-2002, 15:03 Post: 40204
Peters

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 New Holland Starting Problem

I would check them with a ohm meter before I remove any. It is probably only one that is bad. You should be able to get the resistance values from the shop manual. The resistance is likely to be low so may need a good meter to tell the difference.
I guess alternatively I guess you could remove the wire from each glow plug individually until the fuse does not blow, but this would cost you a few fuses.






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 07-10-2002, 07:35 Post: 40241
TomG

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 New Holland Starting Problem

Your tractor may be different than my 1710 and 1630 manual procedures should be followed. An abbreviated procedure to remove the glow plugs in my 1710 repair manual is: remove the wiring and parallel connector, remove backing washers from the plugs, and remove the plug. There aren't any warnings or cautions written for removal or installation. Plug and cylinder head threads are cleaned for installation.

The procedure in my manual is for removal and resistance measurement. A good plug measures 1 ohm. All three in a parallel network should measure 1/3 ohm, which is too small for many meters to measure reliably. Specs for a 1630 may be different.

I imagine that simply removing the wiring and taking resistance readings from the plug terminals to the head would accomplish the same thing, but manual procedures should be followed. If the parallel wiring was removed, continuity from the wiring harness to ground (with the pre-heat off) could be checked to see if a short between the key switch and plugs is present.






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 11-18-2002, 04:32 Post: 45085
JimFFF



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 New Holland Starting Problem

Sullivan-Dave, I have had the exact same problem with my TC29D lately. At first I thought the problem was in the starter solenoid. I even found the battery lead was very loose. The other day it did it again and I started investigating. I took the ignition switch out and checked it out (thought there might be a short in the contacts). It seemed to be okay and I continued checking things. Bear in mind that the tractor circuits were completely dead. The main fuse was fine this time. It had blown before just as yours did. I had the panels off in order to remove the ignition switch so I started wiggling harnesses around and the circuits came to life momemtarily. I kept moving the harness and the instrument panel lit up and stayed on. I never found the exact culprit but now I know where to look. It's a chaffed wire or a loose connection somewhere in the neighborhood of the relays just behind the ignition switch. It has started fine every time now for a couple of weeks. One of my projects for this winter is to find the exact problem.






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 11-18-2002, 14:12 Post: 45105
sullivan-dave



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 New Holland Starting Problem

I tested the plugs and found one glow plug had failed.
I also upgraded the starter switch.
She starts fine now.






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 11-18-2002, 14:36 Post: 45107
Peters

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 New Holland Starting Problem

Amen, thats what we are here for.
"Remember were all in this together. I'm pulling for you"
RG






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 11-24-2002, 14:55 Post: 45336
Jeff Earthwerks Unlimited



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 New Holland Starting Problem

My '02 33D with 40 hours on it also blew a 10 amp fuse 3 hours into brushhogging. The starter wouldn't even click (it was running fine until I turned off and it wouldn't start). New fuse and started right up and hasn't quit since (at 60 hours).






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 12-10-2002, 10:49 Post: 45973
craig56



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 New Holland Starting Problem

JimmFFF
I had same problem on my NH 1725. It was the the push on connector on the left side of the tractor that has the full 30 amp circuit on it. The connector was melted. I cut off this connector and put on a heavy duty spade terminal on it.
The connector terminals did not look like they could carry 30 amps to me






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Discussion Boards > Active Subjects > Messages as Posted > Tractor Engine Repair Rebuild Forum

Thread 40163 Filter by Poster:
craig56 1 | cutter 1 | Jeff Earthwerks Unlimited 1 | JimFFF 1 | marklugo 1 | Peters 3 | sullivan-dave 3 | TomG 2 |




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