184 crank pulley

F

farmtrac

Active member
Hello, I have a new to me 184 low boy. My question is about the timing marks on the crank pulley and the pointer. They don’t lineup when #1is on Top Dead Center, is the pulley/crank keyed? Any thoughts on what is not correct, Thanks
 
First I should say that I am not an engine expert but since the similarities are across all the C60 engines with minor changes for the different models applications I would think that the different CS pulleys would have similar timing marks. Early on in production there was one timing mark which changed to two, (before TDC and at TDC). This was all before the introduction of the 154 number series then later the 185 and lastly the 184. Differences in design required different styles CS pulleys but the basic C60 engine remained the same so I would think the timing marks on the pulley would be the same, should be two marks. So are you seeing two marks? If so the first is before TDC and the second at TDC. There was a post a few days ago on the farmall cub forum on this topic. https://farmallcub.com/community/threads/governor-issues.118303/post-942304 The C60 engine parts manual says that the pulley is the same for both the 154 and 185 (it was printed before the 184 was made) but likely is the same part. It also shows that the pinion gear and the pulley uses a halfmoon key and the part number is the same for both. Maybe some of this is helpful. Stan
 
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I’ve encountered one with a sheared key but it was a 154, which had the starter generator, which, I assume was responsible for the failure. I can’t think of a reason for that to happen on a 184.
 
staninlowerAL said:
First I should say that I am not an engine expert but since the similarities are across all the C60 engines with minor changes for the different models applications I would think that the different CS pulleys would have similar timing marks. Early on in production there was one timing mark which changed to two, (before TDC and at TDC). This was all before the introduction of the 154 number series then later the 185 and lastly the 184. Differences in design required different styles CS pulleys but the basic C60 engine remained the same so I would think the timing marks on the pulley would be the same, should be two marks. So are you seeing two marks? If so the first is before TDC and the second at TDC. There was a post a few days ago on the farmall cub forum on this topic. https://farmallcub.com/community/threads/governor-issues.118303/post-942304 The C60 engine parts manual says that the pulley is the same for both the 154 and 185 (it was printed before the 184 was made) but likely is the same part. It also shows that the pinion gear and the pulley uses a halfmoon key and the part number is the same for both. Maybe some of this is helpful. Stan
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Thanks for the reply, yes it has two timing marks on the pulley they are approximately 140 degrees off with #1 on TDC. Maybe the pulley was installed without the key.
 
Just curious about if this engine runs and the timing mark on the pulley just does not align with TDC or is it a non running engine. JMHO, if it is a running engine then the probable answer is as Sonny posted, the pulley is not keyed to the CS. If it is a non runner then the timing issue is probably internal (gears not assembled correctly or something broken/misaligned etc) I guess what I'm trying to say is if it is correctly assembled and has all other conditions for combustion to take place it should run no mater what position the pulley is in with relationship to the pointer. Stan
 
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staninlowerAL said:
Just curious about if this engine runs and the timing mark on the pulley just does not align with TDC or is it a non running engine. JMHO, if it is a running engine then the probable answer is as Sonny posted, the pulley is not keyed to the CS. If it is a non runner then the timing issue is probably internal (gears not assembled correctly or something broken/misaligned etc) I guess what I'm trying to say is if it is correctly assembled and all other conditions for combustion to take place it should run no mater what position the pulley is in with relationship to the pointer. Stan
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Yes it’s a running engine. This started with me doing my normal maintenance on a new tractor and when I was setting it up to adjust the valves I noticed the pointer/pulley and top dead center of number one are never correct. I will eventually remove the pulley to verify that’s the problem. Thanks
 
farmtrac said:
Yes it’s a running engine. This started with me doing my normal maintenance on a new tractor and when I was setting it up to adjust the valves I noticed the pointer/pulley and top dead center of number one are never correct. I will eventually remove the pulley to verify that’s the problem. Thanks
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I'd bet dollars to donuts that the key is missing from the pulley. JMHO Stan
 
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