Lexus SC300 / Lexus SC400. Manual — part 609
(f) Place
the
eight
injectors
and
two
delivery
pipes
assembly in position on the intake manifold.
(g) Temporarily install the connector bracket and four
mounting bolts.
(h) Check that the injectors rotate smoothly.
HINT: If injectors do not rotate smoothly, the probable cause
is incorrect installation of O–rings. Replace the O–rings.
(i)
Position the injector connector outward.
(j)
Tighten the four bolts holding the delivery pipes to the
intake manifold.
Torque: 18 N
⋅
m (185 kgf
⋅
cm, 13 ft
⋅
lbf)
2.
INSTALL FUEL RETURN PIPE
(a) Temporarily install the return pipe with the bolt, two
gaskets and union bolt.
(b) Tighten the union bolt holding the return pipe to the
pressure regulator.
Torque: 35 N
⋅
m (360 kgf
⋅
cm, 26 ft
⋅
lbf)
(c) Tighten
the bolt holding the return pipe to the LH cylinder
head.
3.
TIGHTEN LOCK NUT ON FUEL PRESSURE REGULATOR
Torque: 29 N
⋅
m (300 kgf
⋅
cm, 22 ft
⋅
lbf)
FI–55
EFI SYSTEM – Fuel System (Injectors)
4. INSTALL ENGINE WIRE TO DELIVERY PIPES, REAR
WATER BY–PASS JOINT AND RH CYLINDER HEAD
(a) Connect the eight injector connectors.
(b) Connect the two engine wire connectors to the
connector bracket on the LH delivery pipe.
(c) Install the engine wire to the RH cylinder head with the
two bolts.
(d) Install the engine wire to the rear water by–pass joint
with the two bolts.
(e) Install the engine wire to the delivery pipes with the four
bolts.
5.
INSTALL ENGINE WIRE TO INTAKE MANIFOLD
Install the engine wire with the two bolts.
6. TEMPORARILY INSTALL EGR PIPE TO RH CYLINDER
HEAD
Temporarily Install the EGR pipe with the bolt.
FI–56
EFI SYSTEM – Fuel System (Injectors)
7. CONNECT
FUEL RETURN HOSE TO FUEL RETURN PIPE
8.
CONNECT FUEL INLET HOSE TO LH DELIVERY PIPE
Using SST, connect the inlet hose with two new gaskets and
pulsation damper.
SST 09612–24014 (09617–24011)
Torque: 39 N
⋅
m (400 kgf
⋅
cm, 29 ft
⋅
lbf)
33 N
⋅
m (340 kgf
⋅
cm, 24 ft
⋅
lbf) for SST
HINT: Use a torque wrench with a fulcrum length of 30 cm
(11.81 in.).
9.
INSTALL AIR INTAKE CHAMBER
(See steps 2 to 18 on pages
HINT: After the air intake chamber installed, tighten the bolt
holding to the EGR pipe to the RH cylinder head.
FI–57
EFI SYSTEM – Fuel System (Injectors)
Fuel Pressure Pulsation Damper
COMPONENTS FOR REMOVAL AND
INSTALLATION
FI–58
– Fuel System (Fuel Pressure Pulsation Damper)
EFI SYSTEM
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