1975 Datsun 280z FSM - Spooled up Racing

Air Conditioning
INSTALLATION
AC278
Fig. AC-49 O-ring
1. Replace two O-rings with new
ones.
2. Apply adequate compressor oil to
new O-rings, and install them on expansion
valve.
3. Fit expansion valve to case, and
install bolts and nuts thereon.
Note: In inserting valve into case, be
sure to insert it parallelly to case
without turning it. Never twist
valve in the case, otherwise O-ring
will be caused to twist.
4. Tighten two mounting nuts horizontally.
5. Connect tube to expansion valve.
6. Work that follows is to be done in
reverse sequence of removal.
7. Lastly, evacuate and recharge
system. As to evacuating and charging
system, refer to "Evacuating and
Charging System".
8. Conduct leak test and insure that
there is no leak from connection.
EVAPORATOR
HOUSING
REMOVAL
1. Disconnect battery ground cable.
2. Discharge system.
3. Remove console box.
4. Remove finisher. See Figure
AC-43.
5. Remove retaining screw of 3-way
air duct.
6. Remove instrument panel reinforcement,
and remove finisher
brackets. See Figure AC-50.
AC279
Fig. AC-50
Removing finisher brackets
7. From 3-way air duct, remove air
duct on assistant's seat side, then pull
out 3-way air duct.
8. Disconnect both inlet and outlet
tubes of evaporator.
Note: Upon disconnection of tubes,
put plugs in their openings to keep
dust and moisture out.
9. Remove retaining screw, grommet
cover and grommet from tubes of
evaporator.
10. Remove defroster ducts.
11. Remove instrument panel center
stays. See Figure AC-51.
Fig. AC-51
AC557
Removing instrument
panel center stays
12. Remove drain hose.
13. Remove brackets, installed on
heater unit, of evaporator inlet and
outlet tubes by removing two attaching
screws.
14. Remove control cables from
heater door and water cock.
15. Remove four vacuum hoses
from vacuum selector valve.
16. Remove four wiring connectors
(for control panel illumination lamp,
micro switch, fan speed switch and
thermostat respectively).
17. Remove two attaching bolts installed
on lower side of evaporator
housing, and let evaporator housing
fall down. See Figure AC-52.
18. Pull out evaporator housing
when it has come off bracket installed
on heater unit.
Fig. AC-52
DISASSEMBLY AND
ASSEMBLY
AC281
Removing evaporator
housing
1. Remove four fixing clips of upper
and lower cases.
2. Pull up upper case and separate it
from lower case.
3. Cut off sealing packing with knife
at the conjunction of cases.
4. Pull out thermostat capillary tube
from evaporator core.
5. Pull out evaporator core from
lower case.
/
AC-33