Thermostat; Removal; Inspection; Installation - Mazda 626 1989 Workshop Manual

SOHC

THERMOSTAT

REMOVAL

1. Drain the engine coolant.
2. Remove the thermostat cover.
3. Remove the thermostat.

INSPECTION

Check the thermostat. Replace if necessary.
1. Visually check that the valve is airtight.
2. Place the thermostat and a thermometer in water.
3. Gradually heat the water and check the following:
Item
Initial
opening
tem­
perature
Full-open
temperature
Full-open
lift
76F03X-007

INSTALLATION

1. Install the thermostat into the cylinder head with
jiggle pin at the top.
2. Install a new gasket with the seal print side facing
the cylinder head.
3. Install the thermostat cover.
Tightening torque:
19—30 N m (1.9—3.1 m-kg, 14—22 ft-lb)
4. Replenish the coolant.
5. Start the engine and check for leaks.
Jiggle pin
86U03X-018
THERMOSTAT
Model
FE 12-valve
FE-DOHC
\
Sub valve
83.5—86.5°C
(182— 188°F) 86.5— 89.5°C
{188—193°F)
Main valve
86.5—89.5°C
(188— 193° F)
100°C (212°F)
Sub valve
1.5 mm
(0.06 in) min.
8.5 mm (0.33 in)min.
Main valve
8.0 mm
(0.31 in) min.
3
F2,
FE 8-valve,
F8,F6
80.5— 83.5°C
(177—182°F)
95°C (203°F)
3—11