Buick LeSabre 1965 Service Manual page 767

1 1 - 3 4 HEATER SYSTEM
ACCESSORIES
CONSOLE LEFT
TRIM PANEL
ADJUSTER NUTS
— V--
VACUUM LINE TO WATER VALVE (RED)
VACUUM LINE TO OUTSIDE AIR DOOR
VACUUM DIAPHRAGM (GREEN)
VACUUM LINE TO VACUUM STORAGE TANK (BLACK)
DEFROSTER CONTROL WIRE (BLUE)
TEMPERATURE CONTROL WIRE (RED)
RIGHT VENT CONTROL WIRE ( YELLOW)
LEFT VENT CONTROL WIRE (LIGHT BROWN)
Figure 11-42—Heater System Control Wires - 49000 Series
adjuster nuts on the control wires
(see Figure 11-42). To gain ac-
cess to adjuster n u t s remove
three screws securing console
left trim panel to center console
and take out trim panel. Adjust
control levers to full off and ro-
tate adjuster nuts until lever
knobs are in line and approxi-
mately 1/16 i n c h spring-back
exists. Work lever back and forth
several times and recheck for
proper adjustment.
b. Removal of Heater
System Components
To remove heater core it is nec-
essary to take out heater assem-
bly. Removal of components of
heater system will be obvious
upon inspection (see Figures
11-34, 11-35 and 11-36).
1 1 - 9 HEATER SYSTEM
TROUBLE
DIAGNOSIS
NOTE: It is suggested that prior
to inspecting a car for heater
system malfunctions, the owner
be checked to determine if system
is being operated correctly. All
windows and vents must be closed
to effect maximum heat buildup.
TROUBLE
45000, 46000 & 48000 Series
1. Blower motor inoperative.
CORRECTION
la. Check fuse.
lb. Check for defective heater blower switch (see Figure
11-40).
lc. Check motor ground wire.
Id. Check for defective blower resistor assembly (see Fig-
ure 11-30).
le. Check for loose connectors or broken wires.