1991 LEXUS SC400 Service Repair Manual

Page 2113 of 4087

LEXUS SC400 1991  Service Repair Manual 
7. DISCONNECT HIGH±TENSION CORDS FROMDISTRIBUTOR CAPS
Disconnect   the high±tension cords at the rubber boot. Do not
pull on the cord.
NOTICE: Pulling or bending the cords may damage the
conductor

Page 2114 of 4087

LEXUS SC400 1991  Service Repair Manual 
INSTALLATION OF DISTRIBUTOR
(See Components on page IG±23)
1.  INSTALL CAM POSITION SENSORS TO DISTRIBUTOR HOUSINGS
Install the  cam position sensor with the bolt and screw. Install
the two cam posi

Page 2115 of 4087

LEXUS SC400 1991  Service Repair Manual 
5. INSTALL DISTRIBUTOR CAPSInstall the distributor cap with the three bolts. Install the two
distributor caps.
Torque: 3.8 N Vm (39 kgf Vcm, 34 in. Vlbf)
6.  CONNECT  HIGH±TENSION CORDS TO DISTRIBUT

Page 2116 of 4087

LEXUS SC400 1991  Service Repair Manual 
9.  INSTALL DRIVE BELT IDLER PULLEYInstall the idler pulley and cover plate with the pulley bolt.
Torque: 37 N Vm (380 kgf Vcm, 27 ft Vlbf)
10.  INSTALL NO.3 TIMING BELT COVERS
(See steps 5 to 9 and

Page 2117 of 4087

LEXUS SC400 1991  Service Repair Manual 
(c)  Check the ignition timing.
Ignition  timing: 8±125 BTDC @ idle
(Transmission in neutral range)
If the ignition timing is not as specified, check that following
conditions are normal: w Throttle

Page 2118 of 4087

LEXUS SC400 1991  Service Repair Manual 
SERVICE SPECIFICATIONS
SERVICE DATA
Oil pressureat idle speed29 kPa (0.3 kgf/cm, 4.3 psi) or more
at 3,000 rpm 294±539  kPa
(3.0±5.5 kgf/cm, 43±78 psi)
Oil pumpTip clearanceSTD0.310±0.490 mm0.012

Page 2119 of 4087

LEXUS SC400 1991  Service Repair Manual 
SERVICE SPECIFICATIONS
SERVICE DATA
Oil pressureat idling29 kPa (0.3 kgf/cm2, 4.3 psi) or more
at 3,000 rpm 294±588 kPa
(3.0±6.0 kgf/cm2, 43±85 psi)
Oil pumpTip clearanceSTD0.110±0.240 mm0.0043±

Page 2120 of 4087

LEXUS SC400 1991  Service Repair Manual 
LUBRICATION SYSTEM
LU±1LUBRICATION SYSTEM 
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