How Do You Remove This Fan?, Without Breaking it!!! |
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How Do You Remove This Fan?, Without Breaking it!!! |
kconway |
Mar 14 2011, 08:49 PM
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#1
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Senior Member Group: Members Posts: 1,347 Joined: 6-December 04 From: Monrovia, CA Member No.: 3,231 Region Association: Southern California |
How do you remove this without breaking it? I hear the mag is pretty fragile. I tried tapping on the "hub" from the backside but it didn't budge.
Kev |
PRS914-6 |
Mar 14 2011, 08:58 PM
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#2
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Excellence Magazine Project 914 3.6 Group: Retired Members Posts: 1,278 Joined: 20-May 06 From: Central California Member No.: 6,031 Region Association: None |
How do you remove this without breaking it? I hear the mag is pretty fragile. I tried tapping on the "hub" from the backside but it didn't budge. Kev Hold the assembly off the bench by holding on to the fan itself and have someone tap the alternator shaft with a brass hammer. The alternator and fan housing will fall out the back so make sure it doesn't land on the floor! If that fails, heat the hub around the shaft and repeat while hot |
kconway |
Mar 15 2011, 12:12 AM
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#3
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Senior Member Group: Members Posts: 1,347 Joined: 6-December 04 From: Monrovia, CA Member No.: 3,231 Region Association: Southern California |
(IMG:style_emoticons/default/mad.gif) Well, fans off...alternator is f'd up...I missed the part about using a brass hammer and had the wife "help" by "tapping" on the alternator shaft. Not sure she ever hit end of the shaft. After several glancing blows to the threads I've got an alternator that I can't start the nut on and a stripped nut from trying (IMG:style_emoticons/default/mad.gif)
I should have known better! Anyone have a 911 alternator FS? (IMG:style_emoticons/default/barf.gif) Kev |
mojorisen914 |
Mar 15 2011, 07:31 AM
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#4
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Visit your local strip club Group: Members Posts: 695 Joined: 9-July 06 From: Denver Colorado Member No.: 6,403 Region Association: Rocky Mountains |
I would think that you could find the right size tap to clean up the threads. Or maybe not. It would be worth a try; can't hurt it anymore than it is.
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SLITS |
Mar 15 2011, 08:39 AM
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#5
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
Kevin ..... flat file the mushroomed part of the shaft to size, then use a thread file (triangular file) to clean the starting threads for the nut or obtain a die the correct size / thread pitch. (I don't know what it is).
If you need another, I need to know what alternator you have. Bosch, SEV Marachal, Rhone Paris, Motorola ..... etc. There are a couple of different ones with different mounting depths. |
PRS914-6 |
Mar 15 2011, 08:56 AM
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#6
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Excellence Magazine Project 914 3.6 Group: Retired Members Posts: 1,278 Joined: 20-May 06 From: Central California Member No.: 6,031 Region Association: None |
and had the wife "help" by "tapping" on the alternator shaft. Not sure she ever hit end of the shaft. After several glancing blows to the threads I should have known better! Kev I'm sorry I didn't mention it's not a wife job I just assumed everyone knew that. (IMG:style_emoticons/default/headbang.gif) Brass is essential around threads but I'll bet with a file or a Dremel you can repair them |
Cap'n Krusty |
Mar 15 2011, 09:00 AM
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#7
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
The shaft and its associated threads are too fragile even for a brass hammer. That goes for hitting it with the nut on it, for the most part.
The Cap'n |
kconway |
Mar 15 2011, 10:59 AM
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#8
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Senior Member Group: Members Posts: 1,347 Joined: 6-December 04 From: Monrovia, CA Member No.: 3,231 Region Association: Southern California |
Kevin ..... flat file the mushroomed part of the shaft to size, then use a thread file (triangular file) to clean the starting threads for the nut or obtain a die the correct size / thread pitch. (I don't know what it is). If you need another, I need to know what alternator you have. Bosch, SEV Marachal, Rhone Paris, Motorola ..... etc. There are a couple of different ones with different mounting depths. I'll try to fix it up, I think I have a file that will do the trick. Damn threads are sooo fine on this thing, not sure I can find another nut. Oh yeah, the nuts f'd also from trying to restart the threads. If I'm not successful, it is a SEV Marachal alternator. Kev |
McMark |
Mar 15 2011, 11:33 AM
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#9
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
I'm not nearly as well-versed in six cylinder parts-n-pieces, but can't you unbolt the alternator and pull the fan/alternator unit out together? Seems like it would make it a lot easier to hold the fan... (IMG:style_emoticons/default/confused24.gif)
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PRS914-6 |
Mar 15 2011, 11:53 AM
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#10
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Excellence Magazine Project 914 3.6 Group: Retired Members Posts: 1,278 Joined: 20-May 06 From: Central California Member No.: 6,031 Region Association: None |
I'm not nearly as well-versed in six cylinder parts-n-pieces, but can't you unbolt the alternator and pull the fan/alternator unit out together? Seems like it would make it a lot easier to hold the fan... (IMG:style_emoticons/default/confused24.gif) Yes and No.....The bolts that hold the alternator halves together go through the fan housing as well. On numerous occasions I have tried to unbolt them only to have the long bolts spin requiring to hold the bolt heads that are under the fan. Normally it only takes a "tap" with a brass hammer since it's not an interference fit and I have never damaged a thread doing so. They normally slide right apart. However, that is why I mentioned heat if a "tap" didn't work. A little heat (oxy-acetylene)around the hub and you can usually lift it right out without anything. Yes, a brass hammer can do damage if you don't use it right. In fact I can drive nails with one if I hit hard enough......However, a straight "tap" at a 90 deg angle should have done the trick with no damage at all...Done it many, many times. If it requires a "blow" than heat is a good method combined with a "tap" You can also use a piece of hardwood on top of the shaft for more protection but get lesser results. |
kconway |
Mar 15 2011, 01:24 PM
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#11
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Senior Member Group: Members Posts: 1,347 Joined: 6-December 04 From: Monrovia, CA Member No.: 3,231 Region Association: Southern California |
I'm not nearly as well-versed in six cylinder parts-n-pieces, but can't you unbolt the alternator and pull the fan/alternator unit out together? Seems like it would make it a lot easier to hold the fan... (IMG:style_emoticons/default/confused24.gif) Yes and No.....The bolts that hold the alternator halves together go through the fan housing as well. On numerous occasions I have tried to unbolt them only to have the long bolts spin requiring to hold the bolt heads that are under the fan. Normally it only takes a "tap" with a brass hammer since it's not an interference fit and I have never damaged a thread doing so. They normally slide right apart. However, that is why I mentioned heat if a "tap" didn't work. A little heat (oxy-acetylene)around the hub and you can usually lift it right out without anything. Yes, a brass hammer can do damage if you don't use it right. In fact I can drive nails with one if I hit hard enough......However, a straight "tap" at a 90 deg angle should have done the trick with no damage at all...Done it many, many times. If it requires a "blow" than heat is a good method combined with a "tap" You can also use a piece of hardwood on top of the shaft for more protection but get lesser results. The long bolts were difficult to remove as well. They would not fall out after i removed the nuts and had to apply quite a bit of torque to thread them out after the fan was removed. No doubt this would have worked fine with a brass hammer and/or a block of wood, I just couldn't hold the fan and tap at the same time and needed help. My fault, I should have waited until I had another pair of hands to help out (besides the wife). Kev |
Ericv1 |
Mar 15 2011, 03:46 PM
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#12
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Member Group: Members Posts: 259 Joined: 30-December 07 From: Cincinnati, Ohio Member No.: 8,518 Region Association: Upper MidWest |
I just did this last night as my alternator failed. I tapped 2 of the 8 holes around the center of the fan and screwed in bolts. Then, I tightened the bolts until the fan popped off. I think I read this on Pelican a while back. It worked really well.
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