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Triumph TR6 - Fan Extension 'Special Bolt'
|Good New Year's to you all! Like the rest of you, I'm into my winter project (cam replacement). What is used to remove what Bentley refers to as the 'special bolt' securing the fan extension to the crank? My bolt has rounded "points". Do you just use an impact socket that gives the best fit? And what is the torque spec for this puppy?|
Run down to Sears and buy a 6-point socket. I found that a 12-point will not grab that bolt. Not sure if thet are all rounded that way from new, but 4 engines that I looked at recently were all the same way. Happy New Year!!!
|Thank you Rod. I'll pick up a 6-pointer. Any idea on the torque spec? Can't seem to find it in Russek, Haynes, or Bentley.|
5/8x 2.50 90 to 100 torque.
Special bolt refers to specific length.
Rounding was caused by rust/ DPO's and mechanics using 12 point/ cheap or very worn 6 point impacts.
Standard 6 point not impact is the best bet used on your impact gun. Better tolerances and Bolt tends to set and gun shocks to start. Nope socket won't break if its a high quality but put on some glasses.
Do not use a puller on outer edges of pully. It is a damper.
Clean up the snout key and keyway when doing re-install for burrs.
|Bill--Thanks for the detailed info. The rounded points are so even and smooth I thought the bolt head was machined that way! Wish me luck.|
|The bolt heads were machined that way for clearance in the crank damper, you need a 6 flat socket as a previous poster said.|
Correct machined. My mistake. I looked at mine today. Sorry for the misinfo Rick your not going blind. Most of those bolts are specified due to length though so don't lose it.
Now can some one explain why turned corners? Round socket takes up same space? First thought maybe older sockets had more meat lost due to metal improvements. My old grey set fits fine. Got them in 67 year my eldest son was born so there a bit older than the car. So unless there was a special thin wall socket made in Britain maybe different general socket wall thickness what would be the difference?
|I used a hefty walled 1 5/16" 12 point, 3/4 drive socket w/ a 6 ft breaker bar, popped right off.Blasted it back on w/ impact gun. Does'nt really hold much, torque not important, just tight.It's a very strong bolt, don't worry about it. Peter G|
|Job done. A new 6-point, 1-1/8 inch socket on a beefy 1/2-in drive rachet worked. [A 1-5/16 inch socket was way too large for my bolt.] Several raps with a sledge did the trick. Now on to sliding the steering rack out of the way and removing the cross brace.|
|Oops, coulda been 1 1/8" - memory, memory.|
This thread was discussed between 02/01/2004 and 05/01/2004
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