[David Dunlop]

The next stage of the Sender front panel disassembly has been working on the removal of the Blower assembly from the access door. The first step in this is to remove the COVERS, Metal, Blowers, Electric from the front of the door. This is necessary to gain access to the three machine screw heads of the hardware holding the mount for the blower motor in place.

I found the ¼-Drive Socket Set worked best for this when a universal joint was added between the socket and handle as the upper two nuts holding the COVERS in place are quite close to two of the motor mounts on the inside of the door. Clear lacquer has been used to secure the nuts, but they break free quite easily.

Interesting to find the screen on the front of the cover had a small trim strip of metal folded over its edge. It keeps all the sharp ends of the screen wires out of the way, likely prevents the screen from unravelling and provides a good mounting surface for the 12 spot welds used to secure the screen behind the front lip of the COVERS.

The four posts used to mount the COVERS to the access door are described as:

SCREWS, Spade, 6-32 x 11/16-inch No. C1 with a 0.144-inch dia. hole in the flat end. ZA/CAN 4372

This hole takes a small rivet used to mount the screw to the inside of the rim of the COVERS. The four screws are fitted in a square pattern around the COVERS rim.

Once the COVERS has been removed, one can clearly see the three slotted, round head machine screws holding the Blower Mount in place. The crud on the fan blades is largely just dust with some zinc or cadmium oxide build-up, but it all rubs off rather easily.


David