R E M O V A L O F T H E R M Ostat; Remove T H E R M Ostat; I N S P E C T I O N O F T H E R M Ostat - Toyota 2H Repair Manual

C O O L I N G S Y S T E M
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T H E R M O STAT

R E M O V A L O F T H E R M OSTAT

1 . D R A I N E N G I N E COOLANT (See p a g e C O · 3J
2. D I S C O N N ECT R A D I A T O R I N L E T H O S E F R O M W A T E R
O U T L E T
3. R E M OV E W A T E R O U T L E T
R e m o v e the t h ree b o l l s . water o u t l e t a n d g a s k e t .

REMOVE T H E R M OSTAT

4.

I N S P E C T I O N O F T H E R M OSTAT

NOTE:
ing temperature.
(al I m merse t h e thermostat i n w a t e r and gradually heat
t h e water.
(bl
Check t h e valve opening temperature.
Valve opening tempera ture :
8 2 " C type
88°C Iype
I f the valve opening temperature i s within specification,
replace t h e t h e r m o s t a t .
I e )
C h eck t h e valve l i f t
Valve
82"C t y p e
88"C t y p e
I f the valve l i f t i s less t h a n specification. replace the t h er·
m o s t a t .
1 0 mm
c oo , �o
Therm o s t a t
The thermostat i s n u m bered with t h e valve open­
80 - 84"C ( 1 7 6 - 1 8 3 � F I
8 6 - 90°C ( 1 8 7 - 1 9 4°F)
l i f t :
m m
1 0 (0.39 in.) or m o r e a t 9 5 "' C (203"F)
1 0 m m (0.39 i n . ) or more a t 1 OO�C ( 2 1 2°F)
CO - l l