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Farmall Man
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After a long, cold winter of worrying about getting my lil 14A D8 (that we bought at an auction 180 miles away in AS IS, NON RUNNING condition) up and running we finally did it!!! And much to our surprise it wasn’t as big of job as anticipated…all it required was:
1. Official hand crank mechanism for the pony motor (i.e. 7/8 deep well socket modified with a slot in it, thanks to a nice neighbors shop)

2. One 28yr old compression tester (i.e. The index finger on my left hand inserted firmly in the spark plug hole)


3. A few educated guesses/ head scratching scenarios, A. that the front cylinder on the pony was #1, B. that the mark on the rotor cap gear was a timing mark, C. that the mark belonged between the filed teeth on the cam gear shaft, D. That the window on the Magneto cap was suppose to correlate with TDC of #1….you see someone had already been here before us and couldn’t figure it out before the auction and they didn’t really put it back together!!! 😠 They just hooked it to 4wd tractor and drug it out of the barn….

After that it was a simple as figuring out why the Magneto didn’t have spark, condenser problem…no….points…no….coil….no…. you would think that since the ground wire from the ignition switch was disconnected that grounding wasn’t the problem, right???….wrong, unhooked the clip that ran from the outside of the Magneto to the points and Presto!! Spark!! Old girl hadn’t been lit in over 5 years and she hit on the third turn and we began warming up the diesel for the BIG moment…..only it required a little Fire in a can, poor old Pony was a bit sick….high range and it was all it could do to turn it over about 6 times before it choked out and died….Did I mention digging fossilized mice out of Caterpillars version of California’s La Brea Tar Pits aka the oil bath air cleaner??? 😮 YUK!!! But there was nothing like the thunderous roar of the Diesel when she finally hit!!! Can’t wait to get her home this week and begin tinkerin on all the little things that are wrong with her!!! 😊

Thanks for you info and help guys!!!
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Tue, Mar 24, 2009 1:13 AM
ccjersey
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That's a great feeling. Hope your pony is all right. Maybe you just got some of the rust shook loose and it stopped up your float needle.
D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time😄
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Tue, Mar 24, 2009 1:46 AM
gwhdiesel75
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Reply to ccjersey:
That's a great feeling. Hope your pony is all right. Maybe you just got some of the rust shook loose and it stopped up your float needle.
Farmall Man - let's have some digital photos posted here!! GWH
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Tue, Mar 24, 2009 3:03 AM
egoman
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Reply to gwhdiesel75:
Farmall Man - let's have some digital photos posted here!! GWH
It will be a lot easier to load it running than trying to winch it on.
The BIGGEST thing in motocross
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Tue, Mar 24, 2009 3:29 AM
Billy D7 4T
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Reply to egoman:
It will be a lot easier to load it running than trying to winch it on.
If that is the same starting engine common to the 2U's and D7's 3T's etc. the SRB for these does not, tell you what cylinder is #1, well unless I missed it somewhere. Now I can't say I've ever done anything with the innards of one of these mags, I've been through that same problem, and won't soon forget it, if you pull off the inspection cover on the pony flywheel, there is mark on it (SRB- serviceman's reference book describes this too) to align with a mark on the housing, this too should correspond with #1 coming up on top dead center, (you can also put a cork in #1 spark plug hole-it will pop out on the compression stroke) so if you set that mag to fire, building up tension to spark, as those marks line up, and it snaps over at that point, it should be in time. The trouble I had was that to install the mag and align the coupling to the motor and have it timed to the sequence described, seemed difficult for me. I had a Wico mag rebuilt and could not get this right, stumped me for awhile, so in the shed was the remains of another starting engine for another D7, it tossed a rod, amongst other parts given to me, I found a Bosch mag, in a box of junk, I tried it and it worked. Not sure what the deal was with the Wico, still on the shelf as a spare, internal timing of the mag itself ? Use solid conductor wires and it should get a hot spark, your fuel system might be restricted, I noticed on another one of these that the spark was not as hot or seemed to be weaker than the other cylinder, hard to believe these 24 Hp engines do what they do, in the winter mine seems to be on the edge of stalling out at times.
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Tue, Mar 24, 2009 4:10 AM
Farmall Man
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Reply to Billy D7 4T:
If that is the same starting engine common to the 2U's and D7's 3T's etc. the SRB for these does not, tell you what cylinder is #1, well unless I missed it somewhere. Now I can't say I've ever done anything with the innards of one of these mags, I've been through that same problem, and won't soon forget it, if you pull off the inspection cover on the pony flywheel, there is mark on it (SRB- serviceman's reference book describes this too) to align with a mark on the housing, this too should correspond with #1 coming up on top dead center, (you can also put a cork in #1 spark plug hole-it will pop out on the compression stroke) so if you set that mag to fire, building up tension to spark, as those marks line up, and it snaps over at that point, it should be in time. The trouble I had was that to install the mag and align the coupling to the motor and have it timed to the sequence described, seemed difficult for me. I had a Wico mag rebuilt and could not get this right, stumped me for awhile, so in the shed was the remains of another starting engine for another D7, it tossed a rod, amongst other parts given to me, I found a Bosch mag, in a box of junk, I tried it and it worked. Not sure what the deal was with the Wico, still on the shelf as a spare, internal timing of the mag itself ? Use solid conductor wires and it should get a hot spark, your fuel system might be restricted, I noticed on another one of these that the spark was not as hot or seemed to be weaker than the other cylinder, hard to believe these 24 Hp engines do what they do, in the winter mine seems to be on the edge of stalling out at times.
This one has a Presto Lite mag on it....have yet to find any more info on it, everyone i come across has a WICO, and all the manuals i find are for WICO also. I am also hoping that a good tune up and new set of wires and plugs would sure help out on the power issue, not to much fun to have one guy on the ground shooting ether and me throwing the lever from start to compression and back just before the pony chokes down to a dead stop!!!
The old guy who had it before us would pull start it when he needed to use it and couldn't get the pony runnin!!! I never even knew you could pull start a 25ton dozer!!!😊

I'll get some pictures as soon as i get the old girl home, took the camera with me this weekend, but i was so excited to get it running that i forgot about the pic's until i was half way home!!! lol
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Tue, Mar 24, 2009 7:15 AM
Billy D7 4T
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Reply to Farmall Man:
This one has a Presto Lite mag on it....have yet to find any more info on it, everyone i come across has a WICO, and all the manuals i find are for WICO also. I am also hoping that a good tune up and new set of wires and plugs would sure help out on the power issue, not to much fun to have one guy on the ground shooting ether and me throwing the lever from start to compression and back just before the pony chokes down to a dead stop!!!
The old guy who had it before us would pull start it when he needed to use it and couldn't get the pony runnin!!! I never even knew you could pull start a 25ton dozer!!!😊

I'll get some pictures as soon as i get the old girl home, took the camera with me this weekend, but i was so excited to get it running that i forgot about the pic's until i was half way home!!! lol
Lot of things to pay attention too aren't there with these, use care with that ether too. I think Autolite or NGK may be the desirable plug for these, though I forget what heat range is best, that and copper wire. Not sure what the deal is with the magnetos, but they came with Eisemann and or Bosch American if I am correct. There are some internal differences, the Wico X... whatever model that is, is different under the cap.

I always warn or pontificate to great length about those starting motors, keep the oil clean in them, check for thinning with gasoline, change same if you suspect it's been thinned down, the carb can leak down, good to run them out, turn off the sediment bowl, or use a petcock in the bottom of the bowl, drain it down, keep a hand on the governor linkage when the diesel fires, in case it wants to overspeed the pony. You will probably have to clean the fuel system, tank, lines, sediment bowl, if the tank is rusty, put a high rise screen on it if need be, you can clean that tank by putting crushed stone in it and sloshing around, flush out and refill. The Zenith carb is easy to work on, you can clean that out, don't drill any of the orifices, just clean em, they sure like fuel to run strong. I worked on mine and got it running pretty good, would fire from the handcrank, but that electric starter sure makes that pony fire quickly.
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Tue, Mar 24, 2009 11:02 AM
Oil Slick
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Reply to Billy D7 4T:
Lot of things to pay attention too aren't there with these, use care with that ether too. I think Autolite or NGK may be the desirable plug for these, though I forget what heat range is best, that and copper wire. Not sure what the deal is with the magnetos, but they came with Eisemann and or Bosch American if I am correct. There are some internal differences, the Wico X... whatever model that is, is different under the cap.

I always warn or pontificate to great length about those starting motors, keep the oil clean in them, check for thinning with gasoline, change same if you suspect it's been thinned down, the carb can leak down, good to run them out, turn off the sediment bowl, or use a petcock in the bottom of the bowl, drain it down, keep a hand on the governor linkage when the diesel fires, in case it wants to overspeed the pony. You will probably have to clean the fuel system, tank, lines, sediment bowl, if the tank is rusty, put a high rise screen on it if need be, you can clean that tank by putting crushed stone in it and sloshing around, flush out and refill. The Zenith carb is easy to work on, you can clean that out, don't drill any of the orifices, just clean em, they sure like fuel to run strong. I worked on mine and got it running pretty good, would fire from the handcrank, but that electric starter sure makes that pony fire quickly.
FM, I'm getting to the end stages of rebuilding a High Output D82U. You might find a tip or two to help make life easier. Here is the link http://www.antiquecaterpillar.net/ACF_v2/showthread.php?t=10118

If your pony will only run with the choke on then you have a plugged passage. I had the same problem and it was the compensator jet that was plugged.
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Wed, Mar 25, 2009 10:04 PM
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