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1-2
DIAGNOSIS-ACCESSORIES
Possible Cause
Correction
Condition
A T 0 PILOT-(Continued)
PULSATING
ACCELERATOR PEDAL
(a) Speedometer cable or drive cable kinked.
(b)
Lack of cable lubrication.
(c) Improper accelerator linkage adjustment.
CARBURETOR DOES NOT (a) Improper auto pilot linkage adjustment.
RETURN
TO NORMAL
IDLE
SPEEDOMETER DOES
NOT REGISTER
O R
UNIT
faulty.
(b)
Standard throttle linkage defective.
(a) Speedometer drive pinion in transmission i s
DOES NOT OPERATE
SPEEDOMETER
NOISE
UNIT REPEATEDLY
BLOWING FUSES
ELECTRIC CLOCK
CLOCK DOES
NOT
OPERATE
HEATER
INSUFFICIENT HEAT
TOO
MUCH HEAT
BLOWER
MOTOR
NOT
OPERATING
(b) Faulty speedometer cable.
(c) Faulty drive cable from transmission to the
(d) Faulty speedometer.
auto-pilot drive mechanism.
(a) Cables bent or kinked.
(b)
Lack of cable lubrication.
(c) Noisy speedometer head assembly.
(a) Short circuit in wiring, drive mechanism or
switches.
(a) Wire connector not on clock terminal.
(b) Internal short.
(a)
Temperature control valve not opening AR-1,
(b)
Engine thermostat opening too soon, too wide,
(c) Faulty push button controls AR-1, AR-2 Models
(d)
Vacuum line to shut-off damper disconnected or
broken AR-1, AR-2 Models
(e) Faulty vacuum actuator or broken or cracked
nipple AR-1, AR-2 Models.
(f)
Insufficient coolant in radiator.
(9) Collapsed water hose on the return side, or
(h) Heater system airbound; needs bleeding.
(i) Blower motor not operating, fuse blown, faulty
(j)
Improper control cable adjustment.
(a) Temperature control valve stuck in the open
(b)
Disconnected or broken control cable wire.
(c) Engine thermostat controlling at too
high
a
(d)
Thermostat stuck in closed position.
(e) Temperature control valve not closing properly,
cable needs adjusting AR-1, AR-2 Models.
(a) Fuse blown.
(b)
Faulty motor.
(c) Faulty electrical connections.
(d)
Push button not completing circuit AR-1, AR-2
AR-2 Models.
or at low temperature.
partially plugged hose on the pressure side.
wiring or loose connections.
position AR-1, AR-2 Models.
temperature.
Models.
(a) Align the cables. Replace
if
necessary.
(b)
Lubricate the cables.
(c) Adjust the accelerator linkage.
(a) Adjust the auto pilot control rod.
(b)
Repair or replace the linkage.
(a) Replace the speedometer drive pinion.
(b)
Replace the speedometer cable.
(c) Replace the drive cable.
(d)
Repair or replace the speedometer
if
neces-
(a) Replace the cables.
(b) Lubricate the cables.
(c) Repair or replace the speedometer as neces-
(a) See "Electrical Tests".
sary.
sary.
(a) Connect wire to terminal.
(b)
Remove clock and repair as necessary.
(a) Adjust or replace valve as necessary.
(b)
Replace thermostat.
(c) Replace push button switch.
(d)
Connect or replace vacuum line.
(e) Replace the vacuum actuator or nipple.
(f)
Fill
radiator to the correct level.
(9) Replace hose or remove obstruction as neces-
sary.
(h) Bleed the heater system.
(i) Replace the fuse or wiring, or install the con-
nections securely.
(1)
Adjust the control cables.
(a) Adjust or replace the valve.
(b)
Connect or replace the control cable.
(c) Replace the thermostat.
(d) Replace the thermostat.
(e) Adjust the control cable.
(a) Replace the fuse.
(b) Replace the motor.
(c) Repair the connections as necessary.
(d) Replace the switch.
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