1991 LEXUS SC400 Service Repair Manual

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Page 2305 of 4087

LEXUS SC400 1991 Service Repair Manual 22. INSTALL DELIVERY PIPES AND INJECTORS(a) Install the grommet and a new O±ring to each injector. (b) W h i l e t u r n i n g t h e I n j e c t o r c l o c k w i s e a n dcounterclockwise,

Page 2306 of 4087

LEXUS SC400 1991 Service Repair Manual (i) Tighten the four mounting nuts. Torque: 18 NVm (185 kgf Vcm, 13 ft Vlbf) 23. INSTALL FUEL RETURN PIPE (a) Temporarily install the return pipe with the bolt, two newgaskets and union bolt. (b)

Page 2307 of 4087

LEXUS SC400 1991 Service Repair Manual 25. INSTALL ENGINE WIRE TO INTAKE MANIFOLDInstall the engine wire with the two bolts. 26. TEMPORARILY INSTALL EGR PIPE TO RH CYLINDER HEAD Temporarily install a new gasket and the EGR pipe with the

Page 2308 of 4087

LEXUS SC400 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 2309 of 4087

LEXUS SC400 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 2310 of 4087

LEXUS SC400 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 2311 of 4087

LEXUS SC400 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 2312 of 4087

LEXUS SC400 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
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