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D24U Pony Motor issues
D24U Pony Motor issues
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Posts: 16
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Thank you received: 19
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2 years 7 months ago #235533
by mjspicer1980
Evening, I picked up a D24U and got it running after a little work and used it for a day. Went back a week later and I couldn't get the pony to run without the choke all the way out. I pulled the carb and cleaned it out along with all the jets. I put it back on today and it runs without the choke being out. The new issue is the pony dies after I move the decompression lever from start to run. Anyone seen this and was it a governor issue?
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2 years 7 months ago #235535
by neil
I've seen this but from a partly-blocked main jet. If the throttle control stop is on the wrong side of the throttle stud, the governor can't control the throttle properly. Easy to reassemble it wrong. Check governor belt is in place and properly tensioned, check that when the throttle control is moved to full, that the governor control rod is free to open and close the throttle by hand. The throttle control when all the way out, pulls the throttle closed, against the governor spring.
Cheers,
Neil
Pittsford, NY
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2 years 7 months ago #235546
by mjspicer1980
If I push the throttle to full, I can move the governor by hand make the engine increase RPM. I will go back and check belt tension. Thanks
Mike
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2 years 7 months ago #235561
by neil
That sounds good but also check when it's at partial throttle - the throttle tang should prevent the governor from opening the throttle right up. If it does that, then it's in the right relationship
Cheers,
Neil
Pittsford, NY
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2 years 7 months ago #235574
by FroghairFarm
Thanks for posting, love the photos. You should tie the machine down better, looks like the engine blew off!
D4 D 78A 6678
D4 6U 1139
D2 5U 1164
JD 350B
JD 420C
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2 years 7 months ago - 2 years 7 months ago #235577
by mjspicer1980
Haha. That's funny. I didn't think about that. Good thing it's 2 different dozers.
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2 years 7 months ago #235779
by mjspicer1980
Okay. The pony fouled the plugs. Main engine still won't start. I gave a squirt of ether and it started and then died. Watched squatches videos and seen him get a 20 yo d2 running. I popped the injector pump Inspection cover off and turned the engine over by hand. The rear injector lifter is sized in the up position and the fuel control rod won't actuate back and forth.
Who knows about injector pumps.
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2 years 7 months ago #235783
by dpendzic
Start spraying the injector and control rod with loose juice--let it set a couple of days and then gently pry them to get them to move and then work back and forth
D2, D3, D4, D6, 941B, Cat 15
Hancock Ma and Moriches NY
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D24U Pony Motor issues
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