1991 LEXUS SC400 Service Repair Manual

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Page 1137 of 4087

LEXUS SC400 1991 Service Repair Manual ON±VEHICLE INSPECTION 1. INSPECT BATTERY SPECIFIC GRAVITY ANDELECTROLYTE LEVEL (a) Check the specific gravity of each cell. Standard specific gravity: 1.27±1.29 when fully charged at 20 5C (68 5F)

Page 1138 of 4087

LEXUS SC400 1991 Service Repair Manual (b) Check the belt tensioner operation.w Check that the belt tensioner moves downward when the drive belt is pressed down at the points indicated in the illustration with approx. 98 N ( 10 kgf, 22.0

Page 1139 of 4087

LEXUS SC400 1991 Service Repair Manual 7. INSPECT CHARGING CIRCUIT WITHOUT LOADHINT: If a battery/alternator tester is available, connect the tester to the charging circuit as per manufacturers instruc- tions. (a) If a tester is not av

Page 1140 of 4087

LEXUS SC400 1991 Service Repair Manual 8. INSPECT CHARGING CIRCUIT WITH LOAD(a) With the engine running at 2,000 rpm, turn on the highbeam headlights and place the heater blower switch at ºHIº. (b) Check the reading on the ammeter. S

Page 1141 of 4087

LEXUS SC400 1991 Service Repair Manual ALTERNATOR COMPONENTS FOR REMOVAL AND INSTALLATION REMOVAL OF ALTERNATOR 1. DISCONNECT CABLE FROM NEGATIVE TERMINAL OFBATTERY CAUTION: Work must be started after approx. 20 se- conds or longer from

Page 1142 of 4087

LEXUS SC400 1991 Service Repair Manual 4. REMOVE ALTERNATOR(a) Disconnect the alternator connector. (b) Remove the cap and nut, and disconnect the alternatorwire. (c) Remove the bolt, and disconnect the A/T oil cooler pipe bracket. (d)

Page 1143 of 4087

LEXUS SC400 1991 Service Repair Manual (b) Remove the three nuts and end cover. 2. REMOVE BRUSH HOLDER AND IC REGULATOR (a) Remove the brush holder cover from the brush holder. (b) Remove the five screws, brush holder and IC regulator

Page 1144 of 4087

LEXUS SC400 1991 Service Repair Manual (c) Remove the seal plate. 4. REMOVE PULLEY (a) Hold SST (A) with a torque wrench, and tighten SST (B)clockwise to the specified torque. SST 09820±63010 Torque: 39 N Vm (400 kgf Vcm, 29 ft Vlbf) (
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