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41 Commodore Six Generator Belt Alignment

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(@David Placker)
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As always when I am in need of information on my 41, I am asking here. I plan to do a full restoration eventually but for now I am doing my best to get everything functioning as best I can. I installed the radiator yesterday after getting it re-cored last week. The belt picture I have attached shows the generator pulley is not in alignment with the water pump and crankshaft pulleys. Prior to taking the generator off and having it rebuilt the alignment wasn't this bad. I didn't notice it off at all, but I wasn't really looking at the alignment that closely. I did notice the fins of the generator fan were laid down prior to removing the generator from its brackets. Of course the was noticed by the shop that rebuilt it. I told them I wanted it as correct as it could be. They straightened the Gen fan fins but had to add a spacer on the armature or the fins being upright prevented the armature from rotating. The generator is the correct Auto-Lite GEC-4801-A . I have removed the Gen to block bracket and tried flipping it over, but this moved the generator too far back and the bracket just barely will install on the block this way. With the Gen to bracket installed in the original position I added spacers behind the water pump pulley to bring it in line. The crank pulley is the farthest away and the belt seems to run good with it all this way. This does make the fan run very close to the radiator as shown in the fan picture. It has about 3/8 inch clearance which is closer by about the same amount than it was before. I thought of drilling new holes or slotting the existing holes in the Gen to block bracket but there is no doubt this bracket has been on this engine many years and may not be the correct bracket but it fits the block and generator very well. Other than being the wrong bracket or the generator having the wrong armature or fan pulley, I am not seeing what else to try. My biggest concern at the moment is the clearance of the fan to the radiator. I could make some modifications but that is a last option, well not really, one way or another I want to find the way it all was originally. Sorry for making this so long but I want to give as much detail as I can. Anyone with this same setup bracket or generator pictures would help. Thanks to you all.


 
Posted : 16/02/2015 4:24 pm
(@kholmes)
Posts: 419
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That water pump looks suspiciously like a '36 version. Someone got a good view of a "41-'47?


 
Posted : 17/02/2015 2:34 am
(@kevinjets)
Posts: 358
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Are you sure they didn't change the fan belt pulley? Walt.


 
Posted : 17/02/2015 5:16 am
(@David Placker)
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Park and Walt,
I don't know if the water pump or fan pulley are the original, I do know the 212 matches the cars serial Number. I can say all of these parts have been on the car for many years but do understand that doesn't make them correct. One thing I was wanting to find out is if anyone can tell me what the correct distance between the fan and radiator should be. I don't intend to leave the pacers between the fan pulley and the water pump. I did that temporarily to get things in line and be able to move the car. I considered using spacers between the Generator and block bracket but that didn't seem like very much of an option either. Are there any part numbers on the water pump or fan pulley or does anyone know where I can find pictures to use as reference? Thanks for your suggestions.


 
Posted : 17/02/2015 3:47 pm
(@kholmes)
Posts: 419
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David, aside from what the Hudson spacing was, general guidance on fan effectiveness is to place it no more than about 3/4" from the radiator.


 
Posted : 18/02/2015 4:25 am
(@gjevne)
Posts: 586
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David,

Your water cooler and fan/pulley look stock. I'll take pictures of mine and send it to you to look over for comparison.


 
Posted : 18/02/2015 4:52 am
(@David Placker)
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Park, Thanks for the Information


 
Posted : 18/02/2015 1:35 pm
(@David Placker)
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Tim,
Thanks so much for all your effort. I will gladly look at the pictures you send for comparison. I made a couple of 3 mile runs today. Engine temp stays in almost dead on center mark while in motion. Idling after some road time, temp went up to almost the 3/4 mark on the dash gauge then settled in one to two needle marks above the 1/2 (center) mark. I have a K-type thermal couple on my DVM and an infrared thermometer bot showing very close to each other. At one needle mark past center block temperature runs 165-168 degrees F, at the 3/4 mark 180-185 degrees F. From what I have seen in the manuals and in the forums I would say my 41 is indicating about normal. Thanks again.


 
Posted : 18/02/2015 1:55 pm
(@tallent-r)
Posts: 1825
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Just a thought, for this and other questions: have you looked through the Roster to see if anyone with a '41 lives anywhere near you? If so you might contact them and ask it it would be okay to stop by once in awhile to inspect their car, whenever you need to know if you have the correct component, or wonder exactly how it's attached. Or for any other question that could be answered by seeing another car firsthand. They could also be helpful, in a pinch, if you need an extra part and they happen to have several spares of which they'd be happy to sell you one.


 
Posted : 18/02/2015 3:09 pm
(@gjevne)
Posts: 586
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David, probably doesn't help much. But here are some pictures


 
Posted : 20/02/2015 5:00 pm
 ok54
(@ok54)
Posts: 272
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Dave's generator bracket is mounted on the water pump. Tim's is in the correct position.


 
Posted : 21/02/2015 2:50 am
(@David Placker)
Posts: 0
Topic starter
 

Tim,
Thanks for taking and loading the pictures. I can't see the lower engine to block bracket very well on yours but from what I can see there is a difference between our two. Mine has two bolts running horizontally from the bracket into the block. I have suspected this bracket as being wrong for my application even though it has been there for a long time, the other thought is the generator pulley not being correct. Thanks again


 
Posted : 21/02/2015 4:04 am
(@David Placker)
Posts: 0
Topic starter
 

Eddie, Could you please clarify? The upper adjusting bracket on both or ours is mounted in the same location just below the water pump.


 
Posted : 21/02/2015 4:07 am
(@dlm31)
Posts: 960
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David, if it lined up properly prior to removing it, and you were sure, it has to be mounted incorrectly?. Did you remove the mounting bracket to the block?. Did you happened to change the water pump?,if you did, these sometimes have the hub located differently on the water pump shaft?. There has to be a simple reason?. Make sure that the generator mounting ears are both outside the bracket, and not one behind and one one the back side. This is usually very obvious because one of the mounting bolts won't reach. It could have been changed before and someone had put a longer bolt??. I'm just guessing what could be the culprit. Hope this helps! Good luck


 
Posted : 21/02/2015 4:51 am
(@gjevne)
Posts: 586
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David,

Here's the bracket location on the 41 I rebuilt. The generator obviously is not yet on, but the makes the position of attachment easier to see. This is the original engine out of my 41 Deluxe sedan.


 
Posted : 21/02/2015 5:33 am
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