1975 Datsun 280z FSM - Spooled up Racing

VACUUM WATER
COCK
REMOVAL AND
INSTALLATION
1. Disconnect battery ground cable.
2. Drain engine coolant.
3. On inside of the engine compartment,
remove heater hoses on both
inlet and outlet sides by loosening
hose clamps.
4. Remove glove box.
5. Remove blower housing as described
in "Blower Housing".
6. Remove two hoses on room side
by loosening hose clamps.
AC269
Fig. AC-40 Removing vacuum water
cock
7. Remove two mounting screws of
vacuum water cock.
8. Take off vacuum hose, and remove
vacuum water cock from heater
unit.
9. Installation is to be done in reverse
order of removal.
HEATER CORE AND
WATER COCK
REMOVAL AND
INSTALLATION
1. Disconnect battery ground cable.
2. Drain engine coolant.
3. On inside of the engine compartment,
remove heater hoses for heater
inlet and outlet.
4. Remove glove box.
5. Remove blower housing as described
in "Blower Housing".
6. Remove vacuum water cock as
described in "Vacuum Water Cock".
7. Remove control cable from water
cock.
8. Remove control cable from
heater door and then disconnect
heater door rod from heater door by
removing snap ring. See Figure AC-41.
Air Conditioning
\ AC270
Fig. AC-41 Removing heater door rod
Fig. AC-42 Removing heater core
9. Remove two mounting screws of
water cock and two mounting screws
of heater core cover, and pull out
water cock and heater core assembly.
See Figure AC-42.
Note: In removing or installing core,
keep heater door open; otherwise
core will be damaged.
10. Unfasten hose clamps, and disassemble
core and cock.
11. Installation is to be done in
reverse sequence of removal.
Note: As to adjustment of wa