132 ENGINE AND ENGINE REBUILDING
7. Remove transmission cooler line.
8. Remove fen wires from fen and shroud.
9. Remove fan to gain access to lower
cooler line.
10. Remove transmission cooler line at fit
ting.
11. Remove upper shroud bolts.
12. Remove upper shroud.
13. Remove radiator.
14. Installation is the reverse of removal.
Water Pump
REMOVAL AND INSTALLATION
1963-82
1. Drain the radiator.
2. Remove the fan.
3. Loosen the alternator mounting, rotate
the alternator, and remove the fan belt. Re
move power steering belt, A.I.R. belt, and
idler belt, if so equipped.
4. Disconnect radiator and heater hoses.
5. Remove the water pump retaining bolts
and remove the pump.
6. Reverse this procedure to install.
1984 and Later
1. Disconnect battery negative cable.
2. Drain cooling system.
3. Remove serpentine drive belt.
4. Remove water pump pulley.
5. Remove AIR pump pulley.
6. Remove air management valve adapter.
7. Remove AIR pump.
8. Disconnect fuel inlet and return lines.
9. Remove rear A/C compressor braces.
10. Remove lower A/C compressor
mounting bolt.
11. Remove A/C compressor and idler
pulley bracket nuts.
12. Disconnect A/C compressor wires.
13. Slide mounting bracket forward and
rear A/C compressor bolt.
14. Remove A/C compressor.
15. Remove right and left AIR hoses at
check valve.
16. Remove AIR pipe at intake and power
steering reservoir bracket.
17. Remove power steering reservoir
bracket including top alternator bolt.
18. Remove lower AIR bracket on water
pump.
19. Remove lower radiator and heater hose
at water pump.
20. Remove water pump.
21. Installation is the reverse of removal.
NOTE:
If installing new water pump,
transfer heater hose fitting from old unit.
Thermostat
REMOVAL AND INSTALLATION
1.
Drain enough coolant from the radiator
to bring the level below the thermostat.
2. Remove the two bolts retaining the
water neck to the manifold.
3. Lift the water neck (with radiator hose
attached) and remove the thermostat.
4. Reverse this procedure to install, using
a new gasket.
Auxiliary Engine Cooling Fan
Most 1979-82 Corvettes equipped with the
heavy duty cooling system option use an aux-
iliary electric cooling fan. The auxiliary fan is
used to supplement the engine-mounted fan
during conditions of very high engine tem-
peratures. The auxiliary fan circuit is ener-
gized anytime the ignition switch is in the
RUN position, though the fan itself will not
operate until the engine coolant temperature
reaches 238°F., as sensed by the cylinder
head-mounted coolant temperature sensor.
When the coolant temperature decreases to
approximately 201°F., the fan will turn off.
CAUTION:
Keep hands, tools, clothing,
etc. clear of the auxiliary fan. The fan can
come on automatically even when the en-
gine is not running.
Auxiliary electric cooling fan used on most 1979-
84 models
