Elkhart Brass Sidewinder 8494 MOTOR ASSEMBLY - Manual

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L L K K H H A A R R T T B B
R R A A S S S S M M
F F G G . . C C
O O . . , , I I
N N C C . .
1302 W EST B EARDSLEY A VENUE
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P.O. B OX 1127
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E LKHART IN 46515
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(574) 295-8330
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F AX (574) 293-9914
98273010 (Rev-REL)
8494 MOTOR ASSEMBLY REPLACEMENT INSTRUCTIONS
(Please read through these instructions while referring to the included drawings to familiarize yourself with
the required tasks prior to attempting the motor replacement.)
1) Disconnect monitor system power.
2) Disconnect the 2 position motor power plug on the motor assembly that is being replaced.
3) Remove the 4 screws holding the motor assembly to the monitor. (Note the position of any
clamps that secure the monitor wire harness so that they may be reassembled in the same
positions.)
4) Slide the motor cover back just far enough to grasp the motor itself. Pull the motor assembly
away from its mounting pad on the monitor body. It may be necessary to wiggle the motor
assembly back and forth or up and down to loosen it enough to be removed. Be sure to
remove and discard the Rubber Gasket that goes between the motor’s mounting flange and
the monitor. The new motor assembly will have a new one.
5) Remove the 2 set screws that secure the female shaft coupling to the shaft on the old motor
assembly and remove the coupling. Remove the 2 thrust washers and the thrust bearing. Note:
all of these parts must be degreased and all Loctite residue removed before they can be
installed on the new motor assembly.
6) On the new motor assembly place 1 thrust washer over the motor shaft and slide it up against
the motor flange. Pack the thrust bearing with grease (see note on the drawing) and place it
over the over the motor shaft and slide it up against the thrust bearing. Place the other thrust
washer over the motor shaft and slide it up against the thrust bearing. Clean any grease
residue from the exposed motor shaft. Place the female shaft coupling onto the motor shaft
and push it against the thrust washer, apply #242 Loctite to the long set screw and install it
into one of the holes in the female shaft coupling and tighten against the flat of the motor shaft.
Apply #242 Loctite to the short set screw and install it into the other hole in the female shaft
coupling and tighten against the round portion of the motor shaft.
7) Remove the 2 brass nuts and the 2 screws on the new motor assembly. (The brass nuts were
used only to hold the motor assembly together for shipping and are no longer required. The 2
motor screws that came on the new motor assembly are the same as the 4 screws that held
the old motor assembly to the monitor and can be used as replacements if necessary.) Insert
the female shaft coupling and Driv-lok Pin into the bore and slots of the worm shaft. Rotate the
motor assembly so the screw holes and alignment pins in the motor assembly line up with the