[TR] [NET] TR3A Torque Spec?

Wbeech@flash.net wbeech at flash.net
Wed Jun 28 17:58:30 MDT 2017


I remembered that too Andrew, don't think an absolute resolution was ever reached. Three grunts with an 18" breaker bar and some thread sealer should do it. 

Bill

Sent from my Altair 8800

On Jun 28, 2017, at 4:57 PM, Andrew Uprichard <auprichard at uprichard.net> wrote:

I asked the same question some years ago and was never able to get an answer – so I too am interested.
 
Given the importance of this bolt, I have always torqued it just as tight as I can – with a wrench on the bolt and a big pipe wrench on the extension.  All my weight on them.
 
Andrew Uprichard
Jackson, MI
 
From: Triumphs [mailto:triumphs-bounces at autox.team.net] On Behalf Of David Friedlander
Sent: Wednesday, June 28, 2017 12:49 PM
To: richard langhoff
Cc: TR3 Triumphs; New England Triumphs
Subject: Re: [TR] [NET] TR3A Torque Spec?
 
Thank you Richard. But the bolt I'm inquiring about is the main bolt 
holding the fan (and the fan extension) to the crankshaft. It is a 6" 
long bolt with a 5/8-18 UNF thread for the last couple of inches.
 
This is Moss P/N 320-090...  Item 69 in the attached clip:
 
Does your manual specify a torque for this bolt?
 
Dave
'59 TR3A
 
 
 
On Wed, Jun 28, 2017 at 11:58 AM, richard langhoff <richardlanghoff28 at gmail.com> wrote:
David,
 
According to Triumph Owners Handbook of Maintenance and Repair, Floyd Clymer Publications, VelocePress, 2009, p. 316, the torque for "Fan Attachment," 5/16 inch U.N.F. Bolt is 16-18 lbs. ft.
 
I hope this is helpful.
 
Dick Langhoff
'58 TR-3A
S/N 30024L
 
On Wed, Jun 28, 2017 at 9:51 AM, David Friedlander via NET <net at newenglandtriumphs.org> wrote:
Hey all;
 
Can anyone tell me if there is a torque spec for the large bolt used to connect 
the fan to the end of the crankshaft (the bolt goes through the pulley hub and 
the fan extension) ? I didn't see a torque spec anywhere....
 
Thanks for any help.
 
Dave Friedlander
'59 TR3A
 
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