Toyota 3R-B 1969, Repair Manual

Page: 87 / 193

5-18 F U E L S Y S T E M - Ca rbu ret or
Automatic Choke
1 . A s s em b le the thermostat case and
the gasket onto the air horn . T w o
crow n head and one flat head
s c r e w s a r e utilized, and the flat
head s c r e w is installed above the
vacuum piston b o r e .
2. A s s e m b le the piston connector (2 )
onto the vacuum piston (1 ) with
the pin ( 3 ) , and install the piston
assembly into the thermostat case
b o r e .
F i g . 5-32 Assem blin g V4004
Vacuum Piston V4003
3. A s s e m b le the fast idle cam (2 ) and
cam spring (3 ) onto the choke
shaft (1) , and coat engine oil onto
the choke shaft, then install it onto
the a ir horn.
F i g . 5-33 A ssem b lin g V4005
Choke .Shaft
4. Install the choke valve onto the
choke shaft, and after checking for
p r o p e r operation , calk the securing
s c r e w ends.
5. A ss e m b le the piston connector onto
the choke shaft with the connector
retaining s c r e w .
6. Install the sliding rod into the ther­
mostat c a s e , and assemble the
fast idle cam fo llo w e r.
F i g . 5-34 Assem bling V4773
Thermostat C a s e &
Related P a r t s
7. A s s e m b le the coil housing plate,
gasket and the coil housing onto
the thermostat c a s e .
Check the choke valve operation
b efore tightening the coil housing
retaining s c r e w . T h e choke valve
must be closed from the fully-open­
ed position when the coil housing
is turned counterclockwise.
D o not damage the thermostat bi­
metal .
Align the center graduation on the
thermostat case with the cut on the
coil housing.
F i g . 5-35 A ssem blin g Coil V4774
Housing