Installed my flash hider with a new crush washer and only had to tun it a little more than an eighth of a turn to get it to line up. It's a standard A2
Is that enough?
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Installed my flash hider with a new crush washer and only had to tun it a little more than an eighth of a turn to get it to line up. It's a standard A2
Is that enough?
should be fine. Use a torque wrench? get a reading?
If you're not using it as a suppressor mount I wouldn't worry about it. I'm having the opposite problem with an upper and am having to file down the crush washer.
c. When using a constant torque washer, replace the compensator as follows:
(1) Install the constant torque washer on the barrel with concave face facing the
compensator;
(2) Screw the compensator on until it contacts the face of constant torque washer; and
(3) Use the combination wrench and a 1/2 inch drive ratchet to tighten the compensator 90° minimum to 460° maximum, from first contact; or
d. When using a laminated compensator spacer, replace the compensator as follows:
(1) Install the compensator spacer on the barrel with the laminations facing the
compensator;
(2) Screw the compensator on hand tight; and
(3) Use the combination wrench and a 1/2 inch drive torque wrench to tighten the
compensator to a torque of between 62.4 and 69.1 N·m (46 and 51 ft-lb).
NOTE
If upon installation and torquing the middle slot of the compensator is not uppermost and aligned with the front sight, remove the compensator and reduce the thickness of the compensator spacer by removing sufficient laminations to facilitate correct alignment after torquing is carried out.
“A leader is best when people barely know he exists, when his work is done, his aim fulfilled, they will say: we did it ourselves.” -Lao Tzu
http://quibphotography.com/
If you can't remove it by hand you'll be alright although its not the by the book way QUIB posted. Not a lot of people have all the tools and blocks needed to get that specific of a torque measurement.
If you are using a can with it you shouldn't be using a crush washer in the first place.
Quib,
The TMs That I have seen say that when useing a peel washer to torque the FS to 15-20 Ft. Lbs.
Last edited by 556Cliff; 01-14-10 at 12:20.
I'm at the office at the moment, and don't have access to my TMs.
I pulled that reference off line here:
MAINTENANCE INSTRUCTIONS
C7 FAMILY OF COMBAT WEAPONS
http://http://www.coltcanada.com/techpubs.htm
ETA: You'll find this torque called out at:
- Figure 3-1-1 Torque Limits
- Page 3-2-15
I'll agree that torque seems high and contradicts the -23 torque.
Last edited by Quib; 01-14-10 at 13:24.
“A leader is best when people barely know he exists, when his work is done, his aim fulfilled, they will say: we did it ourselves.” -Lao Tzu
http://quibphotography.com/
TM 9-1005-319-23&p dated 1987 has the torque range from 15-20 ft-lb. Page 3-44. I can't find peel washers in the latest change 8 TM.
This is the procedure for installing a FH with a crush washer.
NOTE
Recessed washer does not require torqueing
15. Assemble compensator to the barrel
using recessed washer (12991533) (fig
C-6, item 5) with the large diameter of
the recessed washer forward toward
the compensator and the small
diameter rearward toward the barrel.
Tighten the compensator hand tight and
then tighten a minimum of ¼ turn but no
more than 1 ¼ turns to align the center
of the middle slot (4) with the front sight
post (5). Tighten the compensator to
complete the alignment with the front
sight post. Do not over rotate. If the
compensator is turned backwards, the
compensator will loosen, so the
procedure must be started over with a
new recessed washer.
Last edited by 5pins; 01-14-10 at 14:07.
Last edited by Quib; 01-14-10 at 15:18.
“A leader is best when people barely know he exists, when his work is done, his aim fulfilled, they will say: we did it ourselves.” -Lao Tzu
http://quibphotography.com/
A minimum of 1/4 turn so I'm not there. I can't go a full revolution, I don't a big enough vice.
Any suggestions on how to get it tighter without sending it to some one?
File the crush washer or pre crush in a vice until I can get half a turn on the flash hider. neither sound good to me.
Thanks for all the help
A little off topic but, where can you get a constant torque washer? TIA
What can one man do? You never know until you try.
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