Toyota 3R-B 1969, Руководство по ремонту

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F U E L S Y S T E M - C a r bu re to r 5-17
p ressed a ir, and rem ove the dirt.
Wash the die-cast parts with a soft
brush, and wash and clean the c a r ­
bon deposits around the throttle va lve.
N e v e r use a w ir e fo r cleaning the
jets.
A i r Horn
1. Check the air horn fo r c ra c k s ,
s c o r e s , damaged threads and worn
shaft b o re .
2. Check the choke valve fo r d efo r­
mation, and the choke shaft fo r
bend, twist and w e a r .
3. Check the angle between the cut
(1 ) of the coil housing and the
thermostat bimetal ( 2 ) .
A n g le specification: 84.25 at 25 C
(77 °C )
If the angle is not to the above
specification, make a new cut on
the housing.
F i g . 5-31 Checking V0017
Therm ostat Bimetal
N e v e r bend o r length the bimetal
with a p liers.
T h e embossed mark (3 ) on the
coil housing does not indicate the
installing position but the installing
direction.
4. Check the p o w e r piston fo r w e a r
and fo r p r o p e r operation in the
housing b o re .
A ls o check the p o w e r piston spring
fo r w e a r and deformation.
5. Check the float fo r deformation and
defective tab, and also check for
w e a r o r deformation of the float
le v e r pin hole, bracket and the
le v e r pin.
6. Check the needle valve and valve
seat fo r p r o p e r seating.
7. Check the strainer fo r clog and
rust.
Main Body
1. Check the body f o r c r a c k s , dam­
age on the fitting s u r f a c e s , d efec­
tive threads and jet fitting su rfaces.
2 . Check the jets f o r defective threads
and slot.
3. Check the p o w e r valve fo r p r o p e r
operation, defective threads and
other defects.
4. Check the pump plunger fo r w e a r
of the sliding su rface, defective
leather and w eak spring.
Flange
1. Check the flange f o r c r a c k s , dam­
age of the fitting surface and d e ­
fective threads, and also check fo r
w e a r of the throttle shaft b o r e and
damage of the idle adjusting s c r e w
seat.
2. Check fo r w e a r and deformation
of the throttle v a l v e , and check fo r
w e a r , bend , twist and p r o p e r ope­
ration in the housing of the throttle
shaft..
3. Check the idle adjusting s c r e w fo r
damage of the threads and tapered
portion .
A ssem b ly
B e fo r e assem bly, clean each part with
gasoline, and alw ays re pla ce the g a s ­
kets and the packings.
A ll sliding o r rotating portions should
be coated with engine oil, and be sure
to check fo r p r o p e r operation after
a s s e m b ly .