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Rodomoc 
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Joined: 12 Mar 2012
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 Topic: WD45 Various Questions
Posted: 12 Mar 2012 at 5:02pm |
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Greetings.
I picked up a '55 WD45 last fall and am ready to start attending to its needs. First thing I will be doing is converting to a 1 wire (GM alternator) based 12volt system. I am fairly comfortable with all of the details and parts associated with this change. This was done to my 52 Harry Ferguson and in 7 years I have never had an issue with its 12V setup.
After this I need to do some carburetor work. Tractor will start up and run for a few minutes, but then start missing, and then eventually die. It appears this tractor has the larger Marvel Schebler carburetor. It is in bad external condition and missing the linkage for the choke. Is there any harm in replacing this carb with a Zenith? I read someplace that this is a bad idea but I never understood why exactly. Since I will be buying new, A Zenith for this tractor is quite a bit cheaper. Any comments would be welcome.
I think I am fairly convinced to use a Pertronix electronic ignition. Seems straight forward. I will use a standard non-performance 12V coil and call this upgrade good enough.
Cheers.
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deereequipment1
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Joined: 31 Mar 2011
Location: Southern MD
Points: 261
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Posted: 12 Mar 2012 at 6:13pm |
the marvel carburetor is a larger carb. Most run the TSX464. I have an old zenith I took off my WD, and its was noticably smaller.
So it will run the tractor, but if you want to push more fuel through it, you might need the larger carb.
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Raised on a CA,WD,D10 & D15.
Now, proudly own and pull a WD45 high crop, WD45, WC,
also own a D-10, D-12, G and a CA.
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Ted in NE-OH
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Joined: 12 Nov 2009
Location: Austinburg OH
Points: 1703
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Posted: 12 Mar 2012 at 6:34pm |
Sounds like a fuel restriction, junk in bottom of tank, outlet of tank or just above sediment bowel. 
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CA, WD, C, 3 Bs, 2 Gs, WC, I-400, 914
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RickUP
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Posted: 12 Mar 2012 at 6:39pm |
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The sediment bowl, must be clean on the 45. The screen on top of it could be plugged. Take it all apart n see whats in there. I never used pertronix ignition, but the folks I talked to who have did not like that one. Good luck!
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deereequipment1
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Location: Southern MD
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Posted: 12 Mar 2012 at 7:17pm |
steve from NJ will probably get in on this soon. He sells EI for them, and I installed in on my 45, and it works GREAT!
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Raised on a CA,WD,D10 & D15.
Now, proudly own and pull a WD45 high crop, WD45, WC,
also own a D-10, D-12, G and a CA.
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CTuckerNWIL
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Joined: 11 Sep 2009
Location: NW Illinois
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Posted: 12 Mar 2012 at 8:08pm |
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Tractor will start up and run for a few minutes, but then start missing, and then eventually die.
Check first for any fuel restriction from tank all the way to the bowl drain on the carb. Next thing could be a weak coil or even condenser.
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Rodomoc
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Posted: 13 Mar 2012 at 1:39pm |
Thanks for the comments! I did thoroughly clean the fuel lines, sediment bowl, etc... Gas runs right through it so I am confident it is getting to the carburetor. Regarding the coil or condenser...I have not investigated this yet. Since I intend to go through with the electronic ignition conversion AND 12V conversion these parts will all be replaced in the process. Thus I will hold off on making a carburetor decision until then. The way it sits now it does start right up and behaves for a few minutes before getting finicky. I might add that by increasing throttle to keep it running in these tantrum times just makes the ultimate run time shorter before it stops running. Thus I am really suspecting the current 6V ignition system now. Well the Ferguson was moved out of the shed today to give me more room to work on the wd45. In addition to what I have mentioned, it will be getting all new fluids - belts - hoses - and any other incidental thing it needs. I will also repaint it and make it look real pretty. The engine has already had a complete overhaul by its former owner and not many hours were added since that time. So I should be good to go in short order. This WD45 will inherit various heavy duty tasks around our hobby farm from the smaller TO30 Ferguson. I look forward to doing these tasks with the much more powerful WD45. After this I will start working on my Farmall 460. Someone planted a 560 engine in it at some point but it was rode hard and put away wet a few too many times. That will also be a fun project.
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Ted in NE-OH
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Posted: 13 Mar 2012 at 1:56pm |
Still sounds like fuel, maybe needle valve in carburator is not opening all the way, or has problems.
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CA, WD, C, 3 Bs, 2 Gs, WC, I-400, 914
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CTuckerNWIL
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Posted: 13 Mar 2012 at 5:31pm |
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When it starts to die, pull the choke back and see if that helps temporarily. If it does, it is a fuel starvation problem and not the ignition. The 6 volts won't have any effect on the ignition if it has good juice in the battery. A bad coil can heat up and loose spark. Check the choke when it starts to fade to eliminate the fuel system first.
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DaveKamp
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Joined: 12 Apr 2010
Location: LeClaire, Ia
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Posted: 13 Mar 2012 at 8:35pm |
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And make sure the fuel tank is venting properly. Do the startup, and when it starts to stumble, open the fuel cap. If it recovers, the fuel tank vent isn't venting.
x2 on the coil and condenser.
I have a Pertronix Ignitor on my D17, and have put them on several other things... my dad's '54 Century Resorter amidst other things, and they work great. Make sure you follow the Pertronix' recommendations for selecting a proper coil, because it WILL burn out an improper coil. The instructions indicate how to test the coil to determine applicability.
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Rodomoc
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Posted: 14 Mar 2012 at 10:36am |
Thanks again for the many good suggestions. Applying choke during finiky running mode kills things immediately. Engine runs its best with no choke at all, even immediately after cold startup. Great suggestion concerning the fuel cap. I didn't think of that possibility. I will try this immediately and report back. I will also pull the needle valve and take a look. Parts for the 12v conversion and electronic ignition now on order. Do you guys who already run electronic ignition have suggestions on how much more the spark plug gap needs to be opened up? I look forward to getting this baby running perfect. And took the suggestion on another forum thread to contact a guy in Appleton, Wisconsin who has Allis stuff. Turns out he has a correct Allis 3 bottom plow for this WD45. A weekend trip to go pick up is being planned. This will come in real handy because there is land coming off conservation reserve (CRP) that needs to be built into a hayfield. The WD45 + 3 bottom will make quick work of this compared to my Ferguson T030 + 2 bottom plow. I watched various WD45 videos and it looks to run well in the field with this 3 bottom plow attached.
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