 914/6 fan belt, Deflection |
|
|
|
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. |
|
|
  |
| bcheney |
 Jun 2 2013, 04:36 PM
Post
#1
|
|
Senior Member  Group: Members Posts: 1,341 Joined: 16-November 03 From: Orlando, FL Member No.: 1,348 Region Association: South East States  |
Since you cannot see the belt welll enough to measure deflection after reinstalling what is the best way to be sure you have the tension correct? I installed my alternator today...left one shim between the pulley halfs and 5 on the outside. I tightened everything down and fired her up. The voltmeter shows just over 14 volts now. I turned it off and tightened the nut a bit more and made sure the belt was seated properly. The belt feels a bit loose...I can twist it between my fingers a half turn. Do you think I am good to go or should I move all shims to the outside and see if that seems to feel better?
|
   |
 
|
| pcar916 |
Jun 2 2013, 04:47 PM
Post
#2
|
|
Is that a Lola? Group: Members Posts: 1,523 Joined: 2-June 05 From: Little Rock, AR Member No.: 4,188 Region Association: None 
|
I always make sure I can push the belt in about 1/2in. halfway between the pulleys. This is a little like the front-wheel spindle nut. It's a feel thing and not an exact science. But it is why I've cut a really big access panel into the firewall. Life is better now. I did it without the panel for lots of years, not that it happens very often. Sucks. Especially at night on a lonely road.
|
|
|
|
| 6freak |
Jun 2 2013, 05:44 PM
Post
#3
|
|
MR.C Group: Members Posts: 4,740 Joined: 19-March 08 From: Tacoma WA Member No.: 8,829 Region Association: Pacific Northwest |
QUOTE(bcheney @ Jun 2 2013, 03:36 PM)  Since you cannot see the belt welll enough to measure deflection after reinstalling what is the best way to be sure you have the tension correct? I installed my alternator today...left one shim between the pulley halfs and 5 on the outside. I tightened everything down and fired her up. The voltmeter shows just over 14 volts now. I turned it off and tightened the nut a bit more and made sure the belt was seated properly. The belt feels a bit loose...I can twist it between my fingers a half turn. Do you think I am good to go or should I move all shims to the outside and see if that seems to feel better? 1/4 " flex for every foot axle to axle with A and B belts (IMG:style_emoticons/default/smile.gif) |
|
|
|
| larryM |
Jun 2 2013, 10:41 PM
Post
#4
|
|
emoze Group: Members Posts: 891 Joined: 1-January 03 From: mid- California Member No.: 65 Region Association: Northern California
|
if too loose, it will make a slapping noise at higher rpm, and it may also squeal if you have a really heavy electrical load on it
generally it will feel "too tight" when it's right, compared to what you expect in your Chevy and what the "general repair" books say dunno about your "twist test" - that's not how deflection is measured 13.8-14.2 V is what it should put out - all the time . |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 17th May 2024 - 09:15 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.