1975 Datsun 280z FSM - Spooled up Racing

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Compressor clutch is not
engaged.
Compressor clutch is engaged, but compressor
does not run.
Compressor o
Lead wire of compressor
clutch is dead.
Refer to "Compressor
Clutch Diagnoses".
Compressor clutch coil has voltage
decreased to less than 10.5 V.
Ground terminal of coil is poor
at connection.
Repair connection.
In case clutch is not engaged yet,
replace compressor clutch.
Clutch slipping
• Check and readjust
gap of
clutch.
• Clean oil or dust
on contact surface
of clutch.
If slipping continues,
replace
compressor
clutch.
Belt slipping
Check belt tension
and adjust it.
If belt is worn out
or damaged, replace
it.
Seizured
compressor
Internal problem
in compressor cylinder.
Check system.
Repair or replace
if necessary.
Air-blow on spot where
found. Then check for
leak detector.
Refrigerant leaking
Repair or replace
compressor.
>
O
High torque
Ol
Overcharge of refrigerant
Air in refrigeration system
Compressor
Discharge refrigerant gas to an extent
that sight glass of receiver drier has
only a few bubbles.
Engine speed: 1,500 rpm
Discharge system from service
valve on discharge side.
Evacuate and recharge the
system.
Noisy only when
clutch is engaged
Check for discharge
pressure.
OK if discharge
pressure is
reduced.
Discharge pressure
is not
reduced.
When torque is still great, repair
or replace compressor.
Check for loose
compressor mounting
bolts.
Retighten bolts.
Compressor drive
belt is loosen. Adjust
belt tension.
If compressor is
noisy yet, repair
or replace compressor.