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                             K E N W O O D
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                        Kenwood Service Centers

   Kenwood Service Corporation             Kenwood Service Center, East
   2201 East Dominguez Street              829 Lynnhaven Parkway, Suite 130
   Long Beach, California 90801            Virginia Beach, Virginia 23452
   Telephone 1-310-639-5300                Telephone 1-804-340-1702

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BULLETIN # 950
MODEL: TS-440S
SUBJECT: CASE SCREWS BINDING IN HEATSINK

Occassionally a case screw that fastens to the heat sink of the TS-440S 
will cross thread or bind when it is being inserted or removed.  Binding 
may be caused by tooling marks on the screw or by burrs on the tapped 
threads in the heat sink.  When a screw starts to bind, DO NOT TRY TO 
FORCE IT! as this may cause the head to shear off.  If the screw is being 
removed and it starts to bind, return the transceiver to KENWOOD.  Do 
not make attempts to remove the screw.  In addition, if a transceiver is 
being brought to you with a scrw sheared off, return the unit to 
KENWOOD.  Do not attempt to drill out the screw.

If a screw starts to bind when it is being installed, carefully back it 
out.  Inspect the screw for marks or burrs and replace it if it is 
questionable.  Since the threads in the heat sink may be causing the screw 
to bind, they should be cleaned by running a 3 x 0.5 mm tap into each 
hole.  The tap is inexpensive and can be obtained at many of the 
larger hardware stores.

To avoid cross threading, make sure the covers are properly aligned when 
they are being installed. Proper alignment means that there is a clear 
path for the screw to turn into the heat sink.  This assures that the 
screw does not rub against the case and result in it turning into the 
heat sink at an angle.