1991 LEXUS SC300 Service Repair Manual

Page 1809 of 4087

LEXUS SC300 1991  Service Repair Manual 
(b)  Place four new gaskets on the intake manifold.
HINT: Gaskets can only be used twice before being replaced.
(c)  Place the air intake chamber on the intake manifold.
(d)  Temporarily connect the

Page 1810 of 4087

LEXUS SC300 1991  Service Repair Manual 
31. INSTALL ACCELERATOR BRACKETInstall the bracket with the bolt and stud bolt.
32.  INSTALL BRAKE BOOSTER UNION Install the union with two new gaskets and the union bolt.
Torque: 29 N Vm (300 kgf Vc

Page 1811 of 4087

LEXUS SC300 1991  Service Repair Manual 
35. INSTALL HEATER WATER VALVE(a)  Install the water valve and bracket assembly with thetwo bolts.
(b)  Install the engine wire clamp with the bolt.
(c)  Connect the VSV connector.
36.  INSTALL ISC V

Page 1812 of 4087

LEXUS SC300 1991  Service Repair Manual 
38. (USA Spec.)INSTALL EGR VALVE
(a)  Place a new gasket on the EGR valve adaptor.
NOTICE:
w Do not touch the adapter and EGR valve surfaces of the
gasket with your hand.
w Align  the port holes of t

Page 1813 of 4087

LEXUS SC300 1991  Service Repair Manual 
(c)  Connect the following hoses:(1) Water by±pass pipe hose to ISC valve
(2) Water by±pass pipe hose to water by±pass pipe (from rear water by±pass joint)
(3) Two vacuum hoses to VSV for EGR sys

Page 1814 of 4087

LEXUS SC300 1991  Service Repair Manual 
41.  INSTALL TIMING BELT REAR PLATESInstall the rear plate with the two bolts. Install the two rear
plates.
Torque: 7.8 N Vm (80 kgf Vcm, 69 in. Vlbf)
42.  INSTALL WATER INLET AND INLET HOUSING
(a)

Page 1815 of 4087

LEXUS SC300 1991  Service Repair Manual 
43.  INSTALL RH IGNITION COILInstall the ignition coil with the two bolts.
44.  CONNECT CONTROL CABLES TO THROTTLE BODY Connect the following cables:(1) Accelerator cable
(2) A/T throttle cable
(3) (

Page 1816 of 4087

LEXUS SC300 1991  Service Repair Manual 
47.  INSTALL PS PUMP(a)  In sta ll th e PS pu mp with th e th re e bo lts an d nu t.Alternately  tighten the bolts and nut.
Torque:
Bolt 39 N Vm (400 kgf Vcm, 29 ft Vlbf)
Nut 43 N Vm (440 kgf Vcm, 32