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D17 rotor shaft not? |
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Tbone95 ![]() Orange Level Access ![]() ![]() Joined: 31 Aug 2012 Location: Michigan Points: 12126 |
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Well, if you had 2, or more, plug wires crossed, it would have an obvious continuous severe miss! (or 2) So if you got it started and somewhat smoothed out by rotating the distributor, you probably got the wires hooked up right.
Edited by Tbone95 - 21 Jul 2022 at 7:56am |
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 87100 |
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dont set it by ear...
--Rotate until you feel air pressure on #1 --continue to rotate until you have the FRONT PULLEY SET SCREW straight DOWN --flywheel should be at the TDC mark no --take the cap off the distributor.. --rotate the distributor CAM PLATE and weights ON THE SHAFT and watch the point open .020 inch at the MAX CAM point. --loosen the lock bolts and rotate the distributor until the point JUST STARTS TO OPEN (not turning the SHAFT-- only the distributor CASE). --tighten the lock down bolts --rotate the CAM PLATE by hand and see that it moves free, advances, and the point opens up .020 inch --this is the position ( if you were not holding it open) when you are on the FIRE mark on flywheel
Edited by steve(ill) - 21 Jul 2022 at 1:19pm |
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Hunt4Allis ![]() Orange Level ![]() Joined: 13 Mar 2018 Location: Ohio Points: 1172 |
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 87100 |
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NOTE... when i said turn the ROTOR SHAFT, your right , the SHAFT is not moving, but the CAM PLATE and WEIGHTS are moving on the shaft .. between the TDC and FIRE positions.. Edited by steve(ill) - 21 Jul 2022 at 1:20pm |
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SteveM C/IL ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Location: Shelbyville IL Points: 8565 |
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The timing marks on the flywheel are hard to see when things are clean.If rusty crusty you will struggle seeing them. I don't know if it would work but maybe you could push a stick in the hole while running and kinda knock the debris off enough to see the mark. It's helpful to paint line white but don't know how you could do that with things assembled.
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DrAllis ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Points: 21723 |
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When you say "throttle response", I doubt that timing is your problem. Governor or carburetor linkage.
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Hunt4Allis ![]() Orange Level ![]() Joined: 13 Mar 2018 Location: Ohio Points: 1172 |
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So it will start easily and idle all the way down( running this way won't hurt anything correct - only to try and rub rust off with stick for 10-15 second)
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Hunt4Allis ![]() Orange Level ![]() Joined: 13 Mar 2018 Location: Ohio Points: 1172 |
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I didn't change anything on linkage of either of those and prior to this it was very responsive to movement of throttle handle at steering wheel, so I'm unsure? |
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 87100 |
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you need to have the timing CORRECT at TDC so you can eliminate that as any problem..
Edited by steve(ill) - 21 Jul 2022 at 1:12pm |
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Hunt4Allis ![]() Orange Level ![]() Joined: 13 Mar 2018 Location: Ohio Points: 1172 |
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Watch what weights move out?
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 87100 |
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SORRY... NOTE:... this is not the type distributor you have.. but explained the WEIGHTS and ADVANCE system. Edited by steve(ill) - 21 Jul 2022 at 1:10pm |
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 87100 |
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HUNT.........
maybe we should look at the actual PARTS so we are not confusing the CAP with the ROTOR.... There are variations in the distributors.. If the ROTOR will not move, then the WEIGHTS might be rotating the cam or point plate... You should be able to see the timing ( point opening) change if you take the PLATE off and move insides ??? Again, if your not getting the WEIGHTS working and the timing is STUCK at TDC ( zero advance)... then the motor will not easily increase speed. Edited by steve(ill) - 21 Jul 2022 at 12:09pm |
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Hunt4Allis ![]() Orange Level ![]() Joined: 13 Mar 2018 Location: Ohio Points: 1172 |
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There is a metal plate below black plastic dust cover that the condenser is strapped to along with the point that rides on lobes machined onto vertical distributor shaft.are these weights below that metal plate? Edited by Hunt4Allis - 21 Jul 2022 at 11:54am |
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 87100 |
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YES... below the plate....this is not the distributor you have, but shows the weights and cam lobe movement...
You dont need to actually SEE the weights.. but you do need to SEE that the Cam Lobe Plate can move 15 degrees ( half of engine crank rotation) and that the POINT gap is changing due to the little CAM moving on the shaft........(you said).the point that rides on lobes machined onto vertical distributor shaft.....yes.. thats what you need to see.
Edited by steve(ill) - 21 Jul 2022 at 1:22pm |
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Hunt4Allis ![]() Orange Level ![]() Joined: 13 Mar 2018 Location: Ohio Points: 1172 |
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I have not looked below metal plate that the condenser and points are mounted to.
I will try and redo my TDC, with looking for set screw at 6 o'clockon pulley at bottom of engine first, then move on to these...( Wish AC would have made a bigger viewing hole to see TDC... From other post and my manual I may only have a "TDC" and either a 25 or 30 mark since it's a 1959 model? When it started and ran I was surprised that the throttle response was so bad( was not like this before) thanks for your help,more to come! Edited by Hunt4Allis - 21 Jul 2022 at 12:13pm |
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 87100 |
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Some newer tractors are set a 4-6 degrees to start.. Older tractors were set at TDC and then advanced to FIRE.... You may only have two marks as you dont need the 2-4-6 degree settings.
I hope i have not confused you with too many ideas on how various distributors work... YES, your MAIN GOAL is to get the engine timed statically to TDC and the point start to OPEN at that point..... My ramblings were ment to explain that if your MECHANICAL ADVANCE is stuck , you will not be able to SPEED UP / increase engine RPM smoothly.. The only way to verify that the MECHANICAL ADVANCE is working is to remove the "plastic plate" you talk about and see if things can MOVE inside . OLDER tractors had the weights connected to the CAM LOBES PLATE and that moved relative to the point... https://www.youtube.com/watch?v=ohfovCzq98s ........... disassembly https://www.youtube.com/watch?v=bAxPSPdM61k ............ reassembly Edited by steve(ill) - 21 Jul 2022 at 1:09pm |
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Like them all, but love the "B"s.
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Hunt4Allis ![]() Orange Level ![]() Joined: 13 Mar 2018 Location: Ohio Points: 1172 |
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All info is greatly appreciated 👍
It helps to know the workings of these as I have 3(1950-B,1953-ca,1959-d17)that I can apply more knowledge to these in the future! Thanks fellas |
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Hunt4Allis ![]() Orange Level ![]() Joined: 13 Mar 2018 Location: Ohio Points: 1172 |
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Found the top dead center Mark I think only because of making sure the bolt was pointing straight down at 6:00 after number one compression popped .I noticed the bolt was straight out to the side and I figured the inertia moved it from straight down so I put it back there and found the top dead center mark! (Which was not really visible )other than the "c"but the long line below the "c" was a dead giveaway...
Thanks guys! |
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 87100 |
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clean it good with sand paper or wire brush and shoot a little white or yellow paint in a 2 inch circle with TDC in the center..... for NEXT TIME.
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Like them all, but love the "B"s.
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Hunt4Allis ![]() Orange Level ![]() Joined: 13 Mar 2018 Location: Ohio Points: 1172 |
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Yup, got it marked, thanks now to figure out the timing light to fine tune I guess?
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 87100 |
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If you got the timing set ( point starts to open) at TDC..... then yes, the next step is to see if the ADVANCE works properly... If you have a timing light, you can use it and look at the flywheel and should see the FIRE mark when your up above 1500 RPM or so.... Might help to rotate the crank by hand and stop 30 degrees early ... and CLEAN the FIRE mark first. ........ once you see the FIRE mark, you know the ADVANCE is working OK.
Does it startup OK and then REV UP OK ?
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Like them all, but love the "B"s.
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Hunt4Allis ![]() Orange Level ![]() Joined: 13 Mar 2018 Location: Ohio Points: 1172 |
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I Mark the top dead center line with a white paint marker. So I'm guessing I should Mark the 25 or 30° in a different color so I can differentiate between when using a timing light?
This was a post from a different forum but it talks about the same thing that my manual says that it has a 25 or 30° mark ![]() Edited by Hunt4Allis - 21 Jul 2022 at 8:42pm |
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DrAllis ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Points: 21723 |
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Take a 6 inch long piece of sandpaper or emery cloth and narrow it up and shove it in the timing hole with a rod or screwdriver while the engine idles and clean the whole flywheel in seconds.
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Hunt4Allis ![]() Orange Level ![]() Joined: 13 Mar 2018 Location: Ohio Points: 1172 |
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Dr, I thought about doing this but I feared I may grind off any hope of finding a mark. Now that I know that I found the center mark I may do this because I know how to find it again after smoothing everything out and cleaning it up
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Hunt4Allis ![]() Orange Level ![]() Joined: 13 Mar 2018 Location: Ohio Points: 1172 |
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When people say they use a timing light and if you can see the fire or 25 or 30 degrees before center mark
, Wouldn't I see my white line also from my center mark along with let's say if I painted the 25 or 30° before center mark yellow? I guess I need a little more detail on what to look for with a timing light... |
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SteveM C/IL ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Location: Shelbyville IL Points: 8565 |
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With engine at high idle you will only see the fire mark. The TDC will be out of the picture.
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Hunt4Allis ![]() Orange Level ![]() Joined: 13 Mar 2018 Location: Ohio Points: 1172 |
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I guess I figured that, but if I have them marked respectively with white marker paint on the TDC line and the 25, 30, fire mark(whichever one I have) with yellow does the timing light still work or am I going to see a blur because of the white and yellow?
I guess once I get rid of the white line with Emery cloth once I'm happy with the initial setup maybe the 25, 30, fire Mark will be more easily seen after it's cleaned up? (I'm guessing I should use 120 grit or finer so that I do not just put heavy scratches all the way around the flywheel)? After reading the manual more I guess I'm confused why the timing light is necessary since in the book it has an automatic advance built into the distributor (using the weights and springs below the condensing/points plate)? The manual says it's been proven that this engine runs best at 25°before top dead center I believe at 1800 RPM. I wish I could find a in good condition used tachometer gauge and cable for this 1959 gas series 1 so I knew what RPM I was running... My cable is snapped off internally so it could just need a new cable but I don't know how to check that gauge otherwise? Could I hook a battery drill up to it and see if the needle moves? |
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DrAllis ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Points: 21723 |
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Set ignition timing at WIDE OPEN throttle, not at any other speed. Wide open sees to it the advance mechanism is fully advanced. If you time it at 2,000 RPM or 3,000 RPM it will come out the same. You try and dial it in to 1750 or 1800 the results may not be exactly the same.
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Hunt4Allis ![]() Orange Level ![]() Joined: 13 Mar 2018 Location: Ohio Points: 1172 |
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Without a tach I have no idea what RPM I'm running at at wide Open throttle, it sounds like it does not matter as long as it's WOT...
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steve(ill) ![]() Orange Level Access ![]() ![]() Joined: 11 Sep 2009 Location: illinois Points: 87100 |
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No, it does not matter.....just get the speed to the MAX......If your tractor starts good, throttles up, and has good power, then your advance is probably working OK... If you WANT to use a timing light thats fine... If your not having any problem, dont worry about it...
The timing light LIGHTS when the plug FIRES... If your at 0 RPM that would be TDC, if you could get the light to work... The wieghts start to fly outward as speed increases.... If you measure at 500 RPM the advance might be 10 degrees and you would NOT see anything with a light... at 1000 RPM it might be 20 degrees and you still would NOT see anything with a light..... Somewhere up at 1600 - 18-- 2000 RPM the weights will be all the way OUT and you would see the light FLASH at the 25 or 30 degree mark ( depending on which weights are in the dist)..... Thats why Dr said "GO ALL THE WAY up with the RPM for the test..... Again it is a verification... If the tractor runs good... you can skip this part.
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