View source for Taking Apart A Neilsen Kellerman Cox Box

The following are guidelines only, and if you think things are going wrong you should send the unit to a service company such as http://www.oarsport.co.uk

The general idea is to take the screws out the bottom and push the contents up and out of the white cup shaped case. If you've taken the allen screws out the front panel then e-mail me again as the spacers may have fallen out of place, even if the allen screws went back in.

# Remove the string handle.
# Make sure the rim around the front panel is circular as the front panel must slide out through it. 
# Clean inside the rim around the edge of the front panel and add a little vaseline to help it slide out. 
# Take the screws out the bottom and remove the plastic washers. 
# Put the screws most of the way back in leaving a 3mm gap. 
# Push the base of the cox box down on a hard surface so that the screws are pushed up into the bottom of the cox box. This should push the front panel up slightly. 
# Push the front panel back down and remove any dirt that was pushed up the side of the rim. 
# Loosen the screws to increase the gap to 6mm and push down again. 
# The front panel should slide up further - push it back in and clean any dirt. Repeat until the front panel can be pushed up and down easily. 
# Remove the screws and insert longer screws or some rod, or whatever you can find to push the front panel all the way out.

(Pushing the base down on a hard surface may be assisted by a rubber mallet or wooden block if nothing is moving)

If you have a compressed air supply there is a neat method described here:
https://thomsoneu.blogspot.com/2017/06/cox-box-repair.html

You'll probably need to replace the batteries. You should use Ni-Cad cells as Ni-MH don't like being left on charge. The cox box only has a simple charging circuit.

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