Motor; Programmer Amplifier - Pontiac Grand Prix Service Manual

AUTOMATIC TEMPERATURE CONTROL 1 B-9
Fig.
1B-11
Tool
J 22667
Installed
screwdriver under the higher of the two locking tabs
and gently work clips off mounting stubs.
3. Remove two mounting screws on circuit board and
lift board off finger block mounting post out of way.
Do not put undue strain on attached wiring.
4. Remove potentiometer bracket being careful of
attached leads. The gears and motor are located
directly below the bracket.
5. Inspect gears, Fig. 1B-14, for broken teeth or other
abnormal conditions. Replace gears if broken or
inoperative.
PROGRAMMER
UNSOLDER THESE
LEADS TO REMOVE
4
AMPLIFIER BOARD
Fig.
1B-12
Programmer Amplifier
board and solder orange lead from new motor to same
point. Transfer 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 proce-
dure. When reinstalling programmer wheel, follow
special instructions provided below.
PROGRAMMER WHEEL
REPLACE
MOTOR
REMOVE AND REPLACE
1. Follow procedure for programmer wheel removal
and gear inspection.
2. Remove motor by moving it back and up from its
normal position.
3. Unsolder orange lead to old motor from circuit
1. Position vacuum valve approximately in center of its
travel.
'2. Install program wheel so that peg on vacuum valve
is visible through alignment hole in programmer wheel
vacuum valve slightly to accomplish this.
3. Install potentiometer clip and rotate so that scribe
marks (made previously) on program wheel and clip
line up. Tighten retaining screw on program wheel
hub.