heater MAZDA 626 1987 Repair Manual
Page 1811 of 1865
1 6 COOLING UNIT
INSTALLATION OF COOLING UNIT
1. Install the cooling unit by using the two nuts.
Note
Adjust and position the unit so that its con-
nections match those of the heater unit and
the blower unit.
2. Connect the drain hose.
76G16X-625
Sealing plate
Heater I _ .. ' . . - V
unit Evaporator dealing plate Blower unit
3. Join the connections on both sides by using the
seal plates.
4. Connect the A/C harness to the cooling unit.
76G16X-626
76G16X-627
5. Connect the liquid line high-pressure pipe and suc-
tion low-pressure pipe to the cooling unit.
Tightening torque:
15—22 Nm (1.5—2.5 m-kg, 11—18 ft-lb)
6. Install the instrument lower panel, shower duct and
glove box.
7. If the evaporator is replaced, add compressor oil
to the compressor.
Compressor oil: 50 cc (3.05 cu in)
16-28
Page 1830 of 1865
30 TECHNICAL DATA
3A. COOLING SYSTEM (GASOLINE)
Engine model F6, F8, FE SOHC
Item FE DOHC ECE, Hong Kong
Singapore Middle East General
Cooling method Water-cooled, forced circulation
Water pump
Type Centrifugal, timing belt driven
Impeller diameter mm (in) 70 (2.76)
Number
of
impeller blades 6
Speed ratio 1
:
1.00 1
:
1.05
Water seal type Unified mechanical seal
Thermostat
Type Wax, 2-stage Wax
Start
to
open °C (°F) Sub: 83.5-86.5 (182-188) Main: 86.5-89.5 (188-193) 86.5-89.5 (188-193) 80.5-83.5 (177-182)
Full open °C (°F) 100 (212) 95 (203)
Lift mm (in) Sub: 1.5 (0.06) min.
Main: 8.0 (0.31) min. 8.5 (0.33) min.
Radiator
Type Corrugated
fin
Cap opening valve pressure kPa (kg/cm2,
psi)
74-103 (0.75-1.05,
11
-15)
Cooling system pressure kPa (kg/cm2,
psi)
103 (1.05,
15)
Cooling fan
Type Electric
Capacity W MTX 80 Capacity W ATX 120
Current A MTX 5
6 7.6
Current A ATX
—
8.0-11.0
Number
of
blades 4
Outer diameter mm (in) MTX 320 (12.6) Outer diameter mm (in) ATX 340 (13.4)
Switching temperature OFF -
ON
°C(°F) 97 (207) 91 (196)
Coolant
Capacity liters (US qt, Imp
qt)
With heater 7.5 (7.9, 6.6) Capacity liters (US qt, Imp
qt)
Without heater 7.0 (7.4, 6.2)
Protection Mixture percentage (volume)
%
Specific gravity
of
mixture
at
20°C (68 °F) Antifreeze solution
Protection Water Solution
Specific gravity
of
mixture
at
20°C (68 °F) Antifreeze solution Above -16°C (3°F) 65 35 1.054
Above -26°C (-15°F) 55 45 1.066
Above -40 °C (—40°F) 45 55 1.078
30-16
Page 1831 of 1865
TECHNICAL DATA 30
3B. COOLING SYSTEM (DIESEL)
Item Engine model RF-CX, RF-N
Cooling method Water-cooled, forced circulation
Water pump
Type Centrifugal, timing belt driven
Water seal type Unified mechanical seal
Thermostat
Type Wax, two stage
Start
to
open °C (°F) Main valve:
86.5-89.5 (188-193)
78.5-
Sub valve: 81.5 (173-179)
Full open lift mm (in)/°C (°F) Main valve: 8.0 (0.31) Sub valve: 1.5 (0.06) min./100 (212) min./100 (212)
Radiator
Type Corrugated
fin
Cap opening valve pressure kPa (kg/cm2,
psi)
74—103 (0.75—1.05,
11
-15)
Cooling circuit checking pressure kPa (kg/cm2,
psi)
103 (1.05,
15)
Cooling fan
Type Electric
Number
of
blade 4
Outer diameter mm (in) 340 (13.4)
Switching temperature OFF -»
ON
°C (°F) 91 (196)
Voltage V 12
Capacity W-A 120-8.0-11.0
Coolant
Capacity liters (US qt, Imp
qt)
With heater 9.5 (10.0, 8.4) Capacity liters (US qt, Imp
qt)
Without heater 9.0 (9.5, 7.9)
Protection Mixture percentage (Volume) Specific gravity
of
mixture
at
20°C (68 °F) Antifreeze solution
Protection Water Solution
Specific gravity
of
mixture
at
20°C (68 °F) Antifreeze solution Above -16°C (3°F) 65 35 1.054
Above -26°C (-15°F) 55 45 1.066
Above -40°C (-40°F) 45 55 1.078
30-17