[Elecraft] 2-56 pan heads

Ron D'Eau Claire ron at cobi.biz
Wed Jun 24 10:24:02 EDT 2009


Hello RC:

See the assembly manual parts list, bottom of page A-12 in Rev H:

"Note: The black pan head 2-56 screws are supplied in separate envelopes. Do
not mix them up. You
will be instructed when to use each size screw in the assembly procedure.
Using the wrong screw may
destroy your front panel circuit board."

If that envelope isn't anywhere in the kit, contact k3support at elecraft.com
It's very rare that parts are life out of the kits, so look carefully. 

As the manual recommends, doing the inventory will help you recognize
everything and avoid long, frustrating searches for parts during assembly.
Should something be really missing, it gives time for Elecraft to dispatch
it to you, often before you run into a "brick wall" during assembly. 

The washers called for there is to ensure the front panel board is not
warped when it's mounted on the sheet metal. If you leave washers out, the
center area of the board will be pulled closer than it should be to the
metal. 

One place where this could cause serious trouble is if the screws for
mounting the plastic bezel over the LCD opening reach through enough to
touch the glass front on the LCD. In early kits, several builders managed to
break the glass and destroy the LCD by accidentally installing the wrong
length screws into the bezel. Having the FB board out of position because
the washers are missing might do the same. 

That's one reason why the screws are supplied in separate envelopes with the
instruction to avoid mixing them up. 

Ron AC7AC



-----Original Message-----
During the assembly of K3 #3212 Front panel on page #29 requires 2ea
2-56 black 1/4 6.4mm pan head screws and #2 split lock washers to
mount the stand-offs under the LCD. These screws were missing from the
Hardware bag. There were 2ea 4-40 black flat head screws in the bag. I
found 2ea 2-56 black pan head screws in my Junk Box, however they were
shorter than 5.6mm. In order to install the stand-offs the #2 split
lock washer had to be left off. Is this action going to cause an issue
later?
RC kc5wa

-- 
72 de RC KC5WA
<http://www.kc5wa.net>



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