bodger
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| posted on 24/5/07 at 08:39 PM |
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Propshaft to Diff spring washers
Haynes manual says to replace the spring washers when refitting the prop. Are they normal spring washers or something special that I have to get from
Ford?
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flak monkey
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| posted on 24/5/07 at 08:43 PM |
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I used normal washers and loctite when i put mine together.
Obviously dont know any better!
Not least because I hate spring washers!
[Edited on 24/5/07 by flak monkey]
Sera
http://www.motosera.com
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StevieB
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| posted on 24/5/07 at 08:49 PM |
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I've also used normal washers and will lockwire them when I get rund to it (plus a bit of loctight too - I like to be thorough  )
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bodger
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| posted on 24/5/07 at 08:53 PM |
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The bolts are 10.9 so don't fancy drilling them for lockwire so I'll probably loctite them.
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TGR-ECOSSE
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| posted on 24/5/07 at 10:02 PM |
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Its the old story. Ford have been building cars for a long time and probably know a thing or 2 about engineering components so i would say the washers
are there for a reason so probably a good idea to fit them and use threadlock like ford do.
Sorry to sound a pain but when i was an apprentice mechanic the old guy i worked with used to give me lectures when i left washers etc out.
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TGR-ECOSSE
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| posted on 24/5/07 at 10:14 PM |
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quote:
Originally posted by flak monkey
I used normal washers and loctite when i put mine together.
Obviously dont know any better!
Not least because I hate spring washers!
[Edited on 24/5/07 by flak monkey]
And you studying for a Masters in Manufacturing Engineering should know better than to alter from the manufacturers specification 
I work with manufacturing engineers and they can be so hard to train
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robertst
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| posted on 24/5/07 at 10:23 PM |
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would super glue do as a thread locking agent?
Tom
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bodger
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| posted on 25/5/07 at 05:36 AM |
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quote:
Originally posted by TGR-ECOSSE
and use threadlock like ford do.
Is that the blue paint on the bolts? Wasn't sure if that was some kind of threadlock or the paint indicated they were high stress bolts.
Haynes doesn't mention anything about threadlock when reassembling.
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TGR-ECOSSE
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| posted on 25/5/07 at 05:39 AM |
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quote:
Originally posted by robertst
would super glue do as a thread locking agent?
No it goes brittle. Heres the link for loctite info Loctite
and in spanish Loctite Espanol
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TGR-ECOSSE
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| posted on 25/5/07 at 05:43 AM |
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quote:
Originally posted by bodger
quote:
Originally posted by TGR-ECOSSE
and use threadlock like ford do.
Is that the blue paint on the bolts? Wasn't sure if that was some kind of threadlock or the paint indicated they were high stress bolts.
Haynes doesn't mention anything about threadlock when reassembling.
Yes that is what the blue stuff is on the threads. Don't know why some ford bolts are totaly blue.
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flak monkey
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| posted on 25/5/07 at 06:28 AM |
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quote:
Originally posted by TGR-ECOSSE
And you studying for a Masters in Manufacturing Engineering should know better than to alter from the manufacturers specification
I work with manufacturing engineers and they can be so hard to train
 
Sera
http://www.motosera.com
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JB
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| posted on 25/5/07 at 08:31 PM |
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Spring Washers
quote:
Originally posted by TGR-ECOSSE
Its the old story. Ford have been building cars for a long time and probably know a thing or 2 about engineering components so i would say the washers
are there for a reason so probably a good idea to fit them and use threadlock like ford do.
Sorry to sound a pain but when i was an apprentice mechanic the old guy i worked with used to give me lectures when i left washers etc out.
Sorry but I disagree. I work with designers in the automotive game and they are all engineers like you and me. I am amazed at the ignorance of basic
engineering from a lot of them.
I doubt if you will find any spring washers on cars these days.
I also never use them and my cars do not fall apart. I use nylocs and / Loctite.
This is the reason that I never use spring washers........... A bolted fastener when tightened has residule stress that keeps it from rattling undone,
the bolt is stretched. The amount of this stretch required to keep it tight is a lot more than a spring washer can exert. When the bolt is loose
enough for the spring washer to actually exert any force the bolt is too loose anyway. The only thing a spring washer can possibly do is dig into the
parts and prevent any further undoing. However there are purposly designed washers for this.
My advice is to use the correct grade of bolt, tightened correctly (the difficult part...) and the correct grade of Loctite.
I have built many cars and engines where there were originally spring washers, I left them all out (except where my brother "needed them"
for concours reasons) and have had no problems.
Lockwire will only prevent the bolt falling out not keep it tight, but it does look pretty!
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