AUTOMATIC
TEMPERATURE
CONTROL
1B-5
Fig.
1B-7
Tool J-22667 Installed
normal
conditions. Replace gears if broken or
inoperative.
MOTOR
REPLACEMENT
1. Follow procedure for program wheel removal
and
gear inspection.
PROGRAMMER
WHEEL
X-y,
POTENTIOMETER
CLIP
^^^^^^^^^^^^
ALIGNMENT MARKS
FOR
REASSEMBLY
Fig.
1B-9
Marking Programmer Wheel
2.
Remove motor by moving it back and up from
its normal position.
3. Unsolder orange lead to old motor from circuit
board
and solder orange lead from new motor to
same point. Replace green motor wire in same
manner. Be sure to use resin core solder.
4.
Install
new motor making certain that worm
gear is properly seated in its bearing block and
properly meshed with helical spur gear.
5. Reassemble unit by reversing disassembly pro-
cedure. When reinstalling program wheel,
follow
special instructions provided.
PROGRAM
WHEEL
INSTALLATION
PROCEDURE
GRAY
(68
MODEL
2
GRAY)
J
FINGER
BLOCK
ORANGE
RED
(68
MODEL
2 RED)
—^GREEN
-BROWN
1. Position vacuum valve approximately in center
of its travel.
ALIGN
PEG
O
p
VACUUM
VALVE
WITH
MOLE
IN
WHEEL
—fan
Fig.
1B-8
Programmer Amplifier
Fig.
IB-10
Aligning Programmer Wheel
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