(1) Unsolder the two hookup leads (1)
connected to the solder lugs (2) on the fan
Note. Before disconnecting the leads, record
their colors and the lugs to which they are
(2) Loosen the mounting plate (4) from the main
frame (5) by removing the three plate
mounting screws (6).
(3) Remove the two mounting screws,
that fasten the fan assembly to the main
frame. (Be careful not to drop the washers
and nuts within the main frame.)
(4) Ease the fan assembly (3) out of the main
frame and remove the two screws, washers
and nuts (10, 11 and 12) that hold the
mounting plate to the fan assembly.
(5) Remove the four screws, standoffs,
mount the fan screen (17) to the fan
b. Installation. Using the reverse procedure of a
above, mount the fan screen to the fan assembly:
connect the mounting plate to the fan assembly: and
install the fan within the main frame. Solder the two
leads to the fan assembly lugs.
The fan, when on, should blow air
Figure 5-16. Replacement of the fan assembly.
outwards (exhaust type) from the main frame. If the
two leads have been interchanged, while being
connected, the fan will blow air into the main frame.
To correct this, unsolder the two leads, reverse and