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Bohdan Samba Member
Joined: November 21, 2007 Posts: 143 Location: Venice, Florida
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Posted: Thu Dec 15, 2016 3:17 pm Post subject: Spring Washer on Fan |
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Gents, I have a dilemma and I couldn't get a definitive answer so here it goes.
The washer that goes on the fan is labeled as a "spring washer". This is between the fan and the nut that holds the fan onto the generator/alternator shaft.
It is curved slightly to what I originally thought to match the curvature of the fan. Then the name of this nut is called "spring". So I thought maybe this goes with the concave opposite the fan so that when it tightens that it presses against the nut sort of like lock washer?
So which way washer to match the fan or opposite?
Mighty obliged..... |
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Al Capulco Samba Member
Joined: October 31, 2005 Posts: 532 Location: Northridge, CA.
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Posted: Thu Dec 15, 2016 4:17 pm Post subject: Re: Spring Washer on Fan |
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Opposite, you want it to put a little pressure on the nut. |
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Danwvw Samba Member
Joined: July 31, 2012 Posts: 8892 Location: Oregon Coast
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Posted: Thu Dec 15, 2016 4:20 pm Post subject: Re: Spring Washer on Fan |
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Yeah, It's almost impossible to get them to tighten right the other way they go opposite. Only need 39 ft lbs. _________________ 1960 Beetle And 1679cc DP W-100 & Dual Zeniths! |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50336
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Posted: Sun Dec 18, 2016 9:37 am Post subject: Re: Spring Washer on Fan |
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The spring washers don't offer much resistance to a fastener coming loose. What they are is a fairly high quality steel with offers a smooth slick surface for the fastener to slide against guarantying consistent torque. I usually will place them concave side down, but I don't think it makes much difference, as it is the torque on the fastener which ultimately keeps it from loosening and not the washer. |
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Bohdan Samba Member
Joined: November 21, 2007 Posts: 143 Location: Venice, Florida
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Posted: Sun Dec 18, 2016 7:55 pm Post subject: Re: Spring Washer on Fan |
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Thanks gents. I have elected to go opposite. Even though some literature that I. Saw from some diagram should the other way. |
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kreemoweet Samba Member
Joined: March 13, 2008 Posts: 3897 Location: Seattle, WA
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50336
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Posted: Tue Dec 20, 2016 6:20 am Post subject: Re: Spring Washer on Fan |
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Interesting, too bad they didn't give the part number of the washer. Is a "dished" washer the same as a "spring" washer? or is it something different? The VW fiche for a Transporter shows a standard style spring washer with a Beetle part number of 111 119 135 and shows it being installed in the opposite direction.
Did later Transporters with Type 1 engines use the same 111 119 135 spring washer or is the dished washer shown in the service bulletin a different part?
For myself, my 1973 Thing uses the 111 119 135 washer.
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kreemoweet Samba Member
Joined: March 13, 2008 Posts: 3897 Location: Seattle, WA
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Posted: Tue Dec 20, 2016 12:04 pm Post subject: Re: Spring Washer on Fan |
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They all use the same washer. Although the VW parts lists refer to it as a "spring washer", it is unlike the usual spring washers
in being asymmetric, i.e., there is a front and a back side, and therefore it matters which way it's installed. The W.B page above
calls it a "dished" washer, but it really is not that either. I really don't think the parts diagram above can be said to show it being installed
one way or another.
The Type I Bentley service manual also warns that the washer (called a "lock washer" there) must be installed as shown above. _________________ '67 bug: seized by the authorities
'68 bug: seized by the authorities
'71 kombi: not yet seized by the authorities
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citroen Samba Member
Joined: February 28, 2010 Posts: 1578 Location: louisville ky
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Posted: Tue Dec 20, 2016 6:18 pm Post subject: Re: Spring Washer on Fan |
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this might confuse you this is for a VW Bus that takes a different fan and it is hooked to a alt. this is not for a bug type engine this picture is a flat engine. this is what yours looks like |
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EverettB Administrator
Joined: April 11, 2000 Posts: 69802 Location: Phoenix Metro
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kreemoweet Samba Member
Joined: March 13, 2008 Posts: 3897 Location: Seattle, WA
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Posted: Tue Dec 27, 2016 12:08 pm Post subject: Re: Spring Washer on Fan |
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citroen wrote: |
this might confuse you this is for a VW Bus that takes a different fan and it is hooked to a alt. this is not for a bug type engine this picture is a flat engine. |
No. The page I posted refers to a standard Type I 1600 upright engine, which many busses in the world had up to the late '70's. The same diagram (and warning), less
the big black arrows, is in the Type I 70-79 Bentley manual. _________________ '67 bug: seized by the authorities
'68 bug: seized by the authorities
'71 kombi: not yet seized by the authorities
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Bohdan Samba Member
Joined: November 21, 2007 Posts: 143 Location: Venice, Florida
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Posted: Mon Feb 27, 2017 6:32 am Post subject: Re: Spring Washer on Fan |
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Oh my goodness. I don't know why my nut loosens itself on the fan. I think I put enough muscle into it that nothing would be able to budge. (albeit, I didn't use a torque wrench). Has anybody had the same issues and how were they corrected? Threadblocker? |
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EverettB Administrator
Joined: April 11, 2000 Posts: 69802 Location: Phoenix Metro
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Posted: Mon Feb 27, 2017 10:34 am Post subject: Re: Spring Washer on Fan |
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Bohdan wrote: |
Oh my goodness. I don't know why my nut loosens itself on the fan. I think I put enough muscle into it that nothing would be able to budge. (albeit, I didn't use a torque wrench). Has anybody had the same issues and how were they corrected? Threadblocker? |
Is the washer in good shape? Sometimes they crack from age and wear.
40-47 pounds is sort of hard to do in place in the car as you have to hold the other side too. It's pretty easy if the generator and fan are in a vice. _________________ How to Post Photos
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