How much torque is too much?, Removing fan yoke |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
How much torque is too much?, Removing fan yoke |
ctc911ctc |
Aug 2 2020, 09:00 AM
Post
#21
|
Senior Member Group: Members Posts: 885 Joined: 9-June 18 From: boston Member No.: 22,206 Region Association: North East States |
Hit it with the mapp torch for 60 sec, hammered around a few times, still on tight,,,
Since heat differential is what we want-yoke vs. shaft, what is the right amount of time to apply mapp? Thank you! Attached thumbnail(s) |
sixnotfour |
Aug 2 2020, 09:35 AM
Post
#22
|
914 Wizard Group: Members Posts: 10,392 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains |
Is the puller going through the bore of the flange ?? Looks to big in diameter to go through....put the bolt in it and back off a couple turns , and push on the head , with puller..
|
Superhawk996 |
Aug 2 2020, 10:18 AM
Post
#23
|
914 Guru Group: Members Posts: 5,673 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
Yowza -- can see deformation of the hub from the hammering. Using soft face hammer?
Bottom line 60 seconds of heat is nowhere near enough. You want that part to get up to 250-350 degrees. Hot! So hot that you wouldn't want to pick it up immediately even with thin leather gloves. Sort of hard to explain. You're not shooting for red hot, that is way too much. If you were to put a drop of penetrating oil on it while it's hot, it should be hot enough to smoke that oil. As stated above make sure the puller isn't interfering. Doesn't look like it to me unless the solid material at the base of the thread is one of those tapered points - I'm assuming that is the crank nose that I see. I have a small plate of thick hardened washers that I put on the crank nose so the puller isn't bearing directly on the counterbore of the crank and/or at risk of messing up threads in the crank nose. That elimantes some of the apprehension about putting more torque on the puller for me. Bolt in hole could work too but beware then all tension is on the bolt threads. I've seen it work and I've even done it this way a few times myself when I have too, but, I don't really like to put that load on threads like that. That one seems to be a real bear -- keep fighting the good fight. |
sixnotfour |
Aug 2 2020, 10:43 AM
Post
#24
|
914 Wizard Group: Members Posts: 10,392 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains |
|
iankarr |
Aug 2 2020, 10:56 AM
Post
#25
|
The wrencher formerly known as Cuddy_K Group: Members Posts: 2,469 Joined: 22-May 15 From: Heber City, UT Member No.: 18,749 Region Association: Intermountain Region |
At least 5 minutes I would say, but @superhawk996 is right... it's a feel thing. I'd bet it's the woodruff key in the slot that's gluing things together.
|
iankarr |
Aug 2 2020, 10:56 AM
Post
#26
|
The wrencher formerly known as Cuddy_K Group: Members Posts: 2,469 Joined: 22-May 15 From: Heber City, UT Member No.: 18,749 Region Association: Intermountain Region |
double post
|
Superhawk996 |
Aug 2 2020, 10:57 AM
Post
#27
|
914 Guru Group: Members Posts: 5,673 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
(IMG:style_emoticons/default/biggrin.gif)
Like the video and special tool. The principle is sound as long as the plate is thick enough and/or hardened enough to not deform. Marriage advice. Don't do that heat treating on the kitchen stove. (IMG:style_emoticons/default/lol-2.gif) I've never had to resort to this but I'll put it in the bag of potential tricks! |
sixnotfour |
Aug 2 2020, 11:02 AM
Post
#28
|
914 Wizard Group: Members Posts: 10,392 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains |
I shouldn't even respond ..but..my motto.. type4sale
|
Superhawk996 |
Aug 2 2020, 11:11 AM
Post
#29
|
914 Guru Group: Members Posts: 5,673 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
I shouldn't even respond ..but..my motto.. type4sale (IMG:style_emoticons/default/biggrin.gif) That's funny but after having also dug into the 2.4L six, it's not like that engine is any simpler to work on. (IMG:style_emoticons/default/happy11.gif) After having worked to get 24 of those crazy barrel nut head studs loosened, I know understand why 911 motor rebuilds are so time intensive. Don't get me started on my current bearing situation with the H6. (IMG:style_emoticons/default/hissyfit.gif) |
ctc911ctc |
Aug 2 2020, 11:12 AM
Post
#30
|
Senior Member Group: Members Posts: 885 Joined: 9-June 18 From: boston Member No.: 22,206 Region Association: North East States |
I have 6 pullers of various size, this puller has the bolt part that fits perfectly within the shaft (without touching the threads) and has the arms off of the smallest puller so they fit on the ears of the yoke.
Thank you! Is the puller going through the bore of the flange ?? Looks to big in diameter to go through....put the bolt in it and back off a couple turns , and push on the head , with puller.. |
ctc911ctc |
Aug 2 2020, 11:16 AM
Post
#31
|
Senior Member Group: Members Posts: 885 Joined: 9-June 18 From: boston Member No.: 22,206 Region Association: North East States |
OK, more heat - less hammer!
BTW, the marks that are in the picture seem to be from when the part was made - there are a few flat spots on the edge of the yoke in various places. Thank you SH! Yowza -- can see deformation of the hub from the hammering. Using soft face hammer? Bottom line 60 seconds of heat is nowhere near enough. You want that part to get up to 250-350 degrees. Hot! So hot that you wouldn't want to pick it up immediately even with thin leather gloves. Sort of hard to explain. You're not shooting for red hot, that is way too much. If you were to put a drop of penetrating oil on it while it's hot, it should be hot enough to smoke that oil. As stated above make sure the puller isn't interfering. Doesn't look like it to me unless the solid material at the base of the thread is one of those tapered points - I'm assuming that is the crank nose that I see. I have a small plate of thick hardened washers that I put on the crank nose so the puller isn't bearing directly on the counterbore of the crank and/or at risk of messing up threads in the crank nose. That elimantes some of the apprehension about putting more torque on the puller for me. Bolt in hole could work too but beware then all tension is on the bolt threads. I've seen it work and I've even done it this way a few times myself when I have too, but, I don't really like to put that load on threads like that. That one seems to be a real bear -- keep fighting the good fight. |
sixnotfour |
Aug 2 2020, 11:18 AM
Post
#32
|
914 Wizard Group: Members Posts: 10,392 Joined: 12-September 04 From: Life Elevated..planet UT. Member No.: 2,744 Region Association: Rocky Mountains |
I have 6 pullers of various size, this puller has the bolt part that fits perfectly within the shaft (without toughing the threads) and has the arms off of the smallest puller so they fit on the ears of the yoke. Thank you! Is the puller going through the bore of the flange ?? Looks to big in diameter to go through....put the bolt in it and back off a couple turns , and push on the head , with puller.. (IMG:style_emoticons/default/smilie_pokal.gif) wow that thing is tight |
bobboinski |
Aug 2 2020, 11:31 AM
Post
#33
|
Member Group: Members Posts: 197 Joined: 23-April 16 From: Petaluma Member No.: 19,929 Region Association: Northern California |
I have been successful doing this by getting the puller tight then smacking the top of the bolt on the puller with a hammer.
|
bobboinski |
Aug 2 2020, 11:40 AM
Post
#34
|
Member Group: Members Posts: 197 Joined: 23-April 16 From: Petaluma Member No.: 19,929 Region Association: Northern California |
I just looked back at your puller. I use a steering wheel type puller so that I am pulling on bolts threaded into the yoke, seems more secure to me and less likely to deform the part.
|
ctc911ctc |
Aug 2 2020, 03:38 PM
Post
#35
|
Senior Member Group: Members Posts: 885 Joined: 9-June 18 From: boston Member No.: 22,206 Region Association: North East States |
(IMG:style_emoticons/default/ar15.gif) HEAT, MORE HEAT (IMG:style_emoticons/default/ar15.gif)
Well it came off, here is the flight path Seems that it took about 2 minutes of MAPP gas, while the oils burned and the gasket smoldered and then the BANG (as anticipated) with a 4 ft flight path. The reason is of course rust. Last, do the galley plugs look good in this picture? I spent an hour cleaning the rear seal and am concerned with the stories of loose plugs THANK YOU TEENERS!!!! (IMG:style_emoticons/default/pray.gif) (IMG:style_emoticons/default/pray.gif) (IMG:style_emoticons/default/pray.gif) (IMG:style_emoticons/default/pray.gif) Attached image(s) |
bobboinski |
Aug 2 2020, 05:02 PM
Post
#36
|
Member Group: Members Posts: 197 Joined: 23-April 16 From: Petaluma Member No.: 19,929 Region Association: Northern California |
(IMG:style_emoticons/default/beerchug.gif) No opinion on the plugs, I cleaned mine up and gave them a coat of JB Weld for insurance as they didn't seem to be leaking. Not a proper repair, I know.
|
porschetub |
Aug 2 2020, 05:38 PM
Post
#37
|
Advanced Member Group: Members Posts: 4,695 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
(IMG:style_emoticons/default/ar15.gif) HEAT, MORE HEAT (IMG:style_emoticons/default/ar15.gif) Well it came off, here is the flight path Seems that it took about 2 minutes of MAPP gas, while the oils burned and the gasket smoldered and then the BANG (as anticipated) with a 4 ft flight path. The reason is of course rust. Last, do the plugs look goo don the other side? I spent an hour cleaning the rear seal and am concerned with the stories of loose plugs THANK YOU TEENERS!!!! (IMG:style_emoticons/default/pray.gif) (IMG:style_emoticons/default/pray.gif) (IMG:style_emoticons/default/pray.gif) (IMG:style_emoticons/default/pray.gif) Heat always works,even better when the part is a taper fit ,big stuff is dangerous ,remember a guy getting his foot broken when a large taper fit coupling popped off with a 60T porta-power in a big way and wasn't retained ,they had to cut his work boot off as the steel cap in his boot had compressed and almost cut some toe's off....scary sh#t. The oil gallery plugs @ the bellhousing can be JB welded after cleaning and scratching up with course sandpaper if you are concerned about them...I just do it regardless,good luck. |
Superhawk996 |
Aug 3 2020, 06:29 AM
Post
#38
|
914 Guru Group: Members Posts: 5,673 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
Well it came off, (IMG:style_emoticons/default/piratenanner.gif) (IMG:style_emoticons/default/cheer.gif) |
Lo-Fi Version | Time is now: 29th March 2024 - 08:12 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |