Tài liệu hướng dẫn sửa chữa Hệ thống lái trên xe 23 2005 2006 toyota hilux factory service manual steering column system he thong lai. Cung cấp các thông tin cần thiết cho Kỹ thuật viên tiến hành chẩn đoán, sửa chữa nhanh chóng, chính xác
STEERING COLUMN – STEERING SYSTEM SR–3 REPAIR Steering Wheel Masking Tape Steering Column Upper Cover STEERING OFF CENTER REPAIR PROCEDURE (a) Inspect steering wheel off center (1) Apply masking tape to the top center of the steering wheel and steering column upper cover (2) Drive the vehicle in a straight line for 100 meters at a constant speed of 35 mph (56 km/ h), and hold the steering wheel to maintain the course F051338E01 (3) Draw a line on the masking tape as shown in the illustration Steering Column Upper Cover Marked Line Steering Wheel Masking Tape F051339E01 (4) Turn the steering wheel to its straight position HINT: Refer to the steering column upper cover and marked line on the steering wheel for the straight position (5) Draw a new line on the masking tape or the steering wheel as shown in the illustration (6) Measure the distance between the lines on the masking tape of the steering wheel (7) Convert the measured distance to the steering angle Measured distance mm (0.04 in.): Steering angle approximately deg HINT: Make a note of the steering angle Steering Column Upper Cover Marked Line Steering Wheel F051340E01 SR SR–4 STEERING COLUMN – STEERING SYSTEM Marked Line R000429E06 F016018E02 SR (b) Adjust the steering angle (1) Draw a line on the RH and LH tie rods and on the RH and LH rack ends which can easily be seen (2) Using a paper gauge, measure the distance from RH and LH tie rod ends to the rack end screws HINT: • Measure both the RH and LH side • Make a note of the measured values (3) Remove the RH and LH boot clips from the rack boots (4) Loosen the RH and LH lock nuts (5) Turn the RH and LH rack ends by the same amount (but in different directions) according to the steering angle Amount of turn: 360° turn of rack end (1.5 mm (0.059 in.) horizontal movement) - 12° of steering angle (6) Tighten the RH and LH lock nuts Torque: 55.5 N*m (566 kgf*cm, 41 ft.*lbf) NOTICE: Make sure that the difference in length between the RH and LH tie rod ends and rack end screws is less than 1.5 mm (0.059 in.) (7) Install the RH and LH boot clips POWER STEERING – VANE PUMP (for 1GR-FE) PS–9 REMOVAL DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL REMOVE ENGINE UNDER COVER SUB-ASSEMBLY NO (for 4WD and Pre-Runner) REMOVE FAN AND GENERATOR V BELT (See page EM-5) DRAIN POWER STEERING FLUID DISCONNECT OIL RESERVOIR TO PUMP HOSE NO (a) Disengage the clip and disconnect the oil reservoir to pump hose No DISCONNECT PRESSURE FEED TUBE ASSEMBLY (a) Remove the union bolt, then disconnect the pressure feed tube (b) Remove the gasket from the pressure feed tube REMOVE VANE PUMP (a) Disconnect the oil pressure switch connector (b) Remove the bolt and wire harness clamp bracket F051257 F051258 PS F051259 (c) Remove the bolts and vane pump assembly F051260 PS–10 POWER STEERING – VANE PUMP (for 1GR-FE) DISASSEMBLY FIX VANE PUMP (a) Using SST, fix the vane pump assembly in a vise SST 09630-00014 (09631-00132) NOTICE: When using a vise, not over tighten it REMOVE POWER STEERING SUCTION PORT UNION (a) Remove the bolt and suction port union (b) Remove the O-ring from the suction port union REMOVE FLOW CONTROL VALVE (a) Remove the pressure port union (b) Remove the O-ring from the pressure port union (c) Remove the flow control valve and compression spring REMOVE POWER STEERING OIL PRESSURE SWITCH NOTICE: Be careful not to drop or badly damage the oil pressure switch If damaged, replace it with a new one REMOVE VANE PUMP HOUSING REAR (a) Remove the bolts and vane pump housing rear from the vane pump housing front (b) Remove the O-ring from the vane pump housing front REMOVE PULLEY SHAFT SUB-ASSEMBLY NOTICE: Be careful not to drop or badly damage the pulley shaft If damaged, replace it with a new one (a) Using a screwdriver, remove the snap ring from the pulley shaft (b) Remove the pulley shaft REMOVE VANE PUMP ROTOR (a) Remove the 10 vane plates (b) Remove the vane pump rotor REMOVE VANE PUMP CAM RING REMOVE VANE PUMP SIDE PLATE FRONT (a) Remove the side plate from the vane pump housing front (b) Remove the O-ring from the side plate SST F042477E01 PS C065368 POWER STEERING – VANE PUMP (for 1GR-FE) PS–11 (c) Remove the O-ring from the vane pump housing front F051267 10 REMOVE VANE PUMP HOUSING OIL SEAL (a) Using screwdriver, remove the oil seal NOTICE: Be careful not to damage the vane pump housing front F051268 INSPECTION Bushing Pulley Shaft INSPECT OIL CLEARANCE (a) Using a micrometer and caliper gauge, measure the oil seal clearance Standard clearance: 0.021 to 0.043 mm (0.0008 to 0.0017 in.) Maximum clearance: 0.07 mm (0.0028 in.) If it is greater than the maximum, replace the vane pump assembly INSPECT VANE PUMP ROTOR AND VANE PUMP PLATE (a) Using a micrometer, measure the height, thickness and length of the vane plates Minimum height: 7.7 mm (0.303 in.) Minimum thickness: 1.408 mm (0.0554 in.) Minimum length: 11.993 mm (0.4722 in.) Front Housing F051269E02 Thickness Height Length N000372E03 (b) Using a feeler gauge, measure the clearance between a side face of the vane pump rotor groove and vane plate Maximum clearance: 0.025 mm (0.0012 in.) If it is greater than the maximum, replace the vane pump assembly Feeler Gauge R010282E01 PS PS–12 POWER STEERING – VANE PUMP (for 1GR-FE) INSPECT FLOW CONTROL VALVE (a) Coat the flow control valve with power steering fluid and check that it falls smoothly into the flow control valve hole under its own weight F051270 (b) Check the flow control valve for leakage Close one of the holes and apply compressed air of 392 to 490 kPa (4 to kgf/cm2, 57 to 71 psi) to the hole on the opposite side Confirm that the air does not flow out of the end holes If necessary, replace the vane pump assembly Compressed Air F052069E02 INSPECT COMPRESSION SPRING (a) Using vernier calipers, measure the free length of the spring Minimum free length: 36.9 mm (1.453 in.) If it is not within the specification, replace the vane pump assembly INSPECT PRESSURE PORT UNION SUB-ASSEMBLY (a) If the union seat in the pressure port union is badly damaged, it could cause fluid leakage, so replace the vane pump assembly Vernier Caliper R008702E02 PS AIR CONDITIONING – AIR CONDITIONING SYSTEM AC–3 PARTS LOCATION ENGINE ROOM J/B - HEATER RELAY COOLER CONDENSER ASSEMBLY - MAGNETIC CLUTCH RELAY PRESSURE SWITCH COMPRESSOR AND MAGNETIC CLUTCH - COMPRESSOR PICK UP SENSOR AIR CONDITIONER AMPLIFIER ASSEMBLY AC ECM IGNITION SWITCH AIR CONDITIONING CONTROL ASSEMBLY I045427E01 AC–4 AIR CONDITIONING – AIR CONDITIONING SYSTEM COOLER EVAPORATOR SUB-ASSEMBLY COOLER THERMISTOR SENSOR AIR INLET CONTROL SERVOMOTOR NO EXPANSION VALVE BLOWER RESISTOR AIR FILTER AC HEATER RADIATOR UNIT ASSEMBLY MODE CONTROL SERVOMOTOR BLOWER WITH FAN MOTOR SUB-ASSEMBLY AIR MIX CONTROL SERVOMOTOR I101600E01 STEERING COLUMN – STEERING COLUMN ASSEMBLY SR–9 REMOVAL PRECAUTION (See page RS-1) DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL Wait for at least 90 seconds after disconnecting the cable to prevent the airbag from working PLACE FRONT WHEELS FACING STRAIGHT AHEAD REMOVE NO.2 LOWER STEERING WHEEL COVER (a) Using a screwdriver with its tip wrapped in protective tape, disengage the claw and remove the steering wheel cover lower No REMOVE NO.3 LOWER STEERING WHEEL COVER (a) Using a screwdriver with its tip wrapped in protective tape, disengage the claw and remove the No lower steering wheel cover REMOVE STEERING PAD (See page RS-558) REMOVE STEERING WHEEL ASSEMBLY (a) Remove the steering wheel assembly set nut (b) Place matchmarks on the steering wheel assembly and main shaft assembly (c) Using SST, remove the steering wheel assembly SST 09950-50013 (09951-05010, 09952-05010, 09953-05020, 09954-05021) F052155E01 F052156E01 Matchmarks SST F044997E01 F051318E01 REMOVE LOWER STEERING COLUMN COVER (a) Remove the screws (b) Disengage the claws to remove the lower steering column cover SR SR–10 STEERING COLUMN – STEERING COLUMN ASSEMBLY REMOVE UPPER STEERING COLUMN COVER (a) Disengage the claw and then remove the upper steering column cover 10 REMOVE SPIRAL CABLE SUB-ASSEMBLY (See page RS-566) 11 REMOVE WINDSHIELD WIPER SWITCH ASSEMBLY (See page WW-17) 12 REMOVE FRONT FLOOR FOOTREST (See page IR-1) F051319E01 13 REMOVE FRONT DOOR SCUFF PLATE LH (for Regular Cab) (See page IR-40) 14 REMOVE FRONT DOOR SCUFF PLATE LH (for Access Cab) (See page IR-61) 15 REMOVE FRONT DOOR SCUFF PLATE LH (for Double Cab) (See page IR-12) 16 REMOVE COWL SIDE TRIM BOARD LH (for Regular Cab) (See page IR-40) 17 REMOVE COWL SIDE TRIM BOARD LH (for Access Cab) (See page IR-61) 18 REMOVE COWL SIDE TRIM BOARD LH (for Double Cab) (See page IR-12) 19 REMOVE INSTRUMENT PANEL UNDER TRAY (for Pedal Type Parking Brake) (See page IP-9) 20 REMOVE INSTRUMENT PANEL HOLE COVER (for Lever Type Parking Brake) (See page IP-9) 21 REMOVE INSTRUMENT PANEL LOWER LH (See page IP-14) 22 REMOVE INSTRUMENT PANEL COVER SUBASSEMBLY LOWER (See page IP-14) SR 23 REMOVE STEERING COLUMN HOLE COVER (a) Disengage the clips and remove the steering column hole cover 24 REMOVE NO ENGINE UNDER COVER SUBASSEMBLY (a) Remove the No engine under cover subassembly with the bolts F051329 AC–13 AIR CONDITIONING – AIR CONDITIONING SYSTEM (2) WAVEFORM 2: Engine speed signal V/DIV ECM Terminal Names Between TACH and E1 Tester Ranges V/DIV, 10 msec./DIV Conditions GND 10 msec./DIV A093225E06 HINT: The wavelength becomes shorter as the engine rpm increases INSPECT ECM (1GR-FE) (a) Connect the connector to the ECM and inspect the wire harness side connector from the back side, as shown in the table below E5 E4 Idling E7 E6 E8 G035613E03 Symbols (Terminals No.) Wiring Colors Terminal Descriptions Conditions STD Voltages Start engine Operate A/C system Accelerator pedal: released → depressed ACT (E7-25) - E1 (E6-1) L - BR Magnet clutch ON permit signal THWO (E7-14) - E2 (E428) GR-B - BR Engine coolant temperature sensor signal TACH (E7-1) - E1 (E6-1) B-W - BR Engine speed signal 10 to 14 → Below 1.0 V Ignition switch: ON Pulse generation (See waveform 1) Engine idling Pulse generation (See waveform 2) (1) WAVEFORM 1: Engine coolant temperature sensor signal ECM Terminal Names Tester Ranges Conditions GND E050693E04 Between THWO and E2 V/DIV, 0.1 sec./DIV AC Ignition switch ON A changes in accordance with the engine coolant temperature Coolant Temperature Below 30° Approx 75° Above 90° A Approx 16ms Approx 204ms Approx 262ms AC–14 AIR CONDITIONING – AIR CONDITIONING SYSTEM (2) WAVEFORM 2: Engine speed signal V/DIV ECM Terminal Names Between TACH and E1 Tester Ranges V/DIV, 10 msec./DIV Conditions GND 10 msec./DIV AC Idling HINT: The wavelength becomes shorter as the engine rpm increases A093225E01 STEERING COLUMN – STEERING SYSTEM SR–1 STEERING SYSTEM PRECAUTION HANDLING PRECAUTIONS ON STEERING SYSTEM (a) Care must be taken when replacing parts Incorrect replacement may affect the performance of the steering system and result in driving hazards HANDLING PRECAUTIONS ON SRS AIRBAG SYSTEM (a) The vehicle is equipped with SRS (Supplemental Restraint System) such as the driver airbag and front passenger airbag Failure to carry out service operations in the correct sequence could cause the SRS to unexpectedly deploy during servicing This may cause a serious accident Before servicing (including inspection, replacement, removal and installation of parts), be sure to read the precautionary notices for the supplemental restraint system (see page 60-6) SR SR–2 STEERING COLUMN – STEERING SYSTEM PROBLEM SYMPTOMS TABLE Use the table below to help you find the cause of the problems The numbers indicate the ranked order of probability of each of the possible causes Check each part in the order shown Repair or replace the parts as necessary STEERING SYSTEM Symptom Hard steering Poor return Excessive free play SR Abnormal noise Maximum Free Play 30 mm (1.18 in.) F008857E01 Suspected area See page Tires (Improperly inflated) TW-1 Power steering fluid level (Low) PS-2 Drive belt (Loose) PS-2 Front wheel alignment (Incorrect) (2WD) SP-2 Front wheel alignment (Incorrect) (4WD Pre) SP-7 Steering system joints (Worn) - Suspension arm ball joints (2WD) (Worn) SP-34 Suspension arm ball joints (4WD Pre) (Worn) SP-40 Steering column (Binding) - 10.Power steering vane pump (2TR) PS-19 11.Power steering vane pump (1GR) PS-9 12.Power steering gear (2WD) PS-29 13.Power steering gear (4WD Pre) PS-53 Tires (Improperly inflated) TW-1 Front wheel alignment (Incorrect) (2WD) SP-2 Front wheel alignment (Incorrect) (4WD Pre) SP-7 Steering column (Binding) - Power steering gear (2WD) PS-29 Power steering gear (4WD Pre) PS-53 Steering system joints (Worn) - Suspension arm ball joints (Worn) (2WD) SP-34 Suspension arm ball joints (Worn) (4WD Pre) SP-40 Intermediate shaft, Sliding yoke (Worn) - Front wheel bearing (Worn) (2WD) AH-7 Front wheel bearing (Worn) (4WD pre) AH-15 Power steering gear (2WD) PS-29 Power steering gear (4WD Pre) PS-53 Power steering fluid level (Low) PS-2 Steering system joints (Worn) - Power steering vane pump (2TR) PS-19 Power steering vane pump (1GR) PS-9 Power steering gear (2WD) PS-29 Power steering gear (4WD Pre) PS-53 ON-VEHICLE INSPECTION CHECK STEERING WHEEL FREE PLAY (a) Stop the vehicle and align the tires facing straight ahead (b) Gently turn the steering wheel right and left by hand, and check the steering wheel free play Maximum free play: 30 mm (1.18 in.) If the free play exceeds the maximum, replace the steering intermediate shaft or steering gear SR–5 STEERING COLUMN – STEERING COLUMN ASSEMBLY STEERING COLUMN ASSEMBLY STEERING COLUMN COMPONENTS STEERING PAD STEERING WHEEL ASSEMBLY 50 (510, 37) NO.3 LOWER STEERING WHEEL COVER NO.2 LOWER STEERING WHEEL COVER SPIRAL CABLE SUB-ASSEMBLY WINDSHIELD WIPER SWITCH ASSEMBLY INSTRUMENT PANEL SUB-ASSEMBLY UPPER STEERING COLUMN COVER SR LOWER STEERING COLUMN COVER INSTRUMENT PANEL LOWER LH FRONT FLOOR FOOTREST COWL SIDE TRIM BOARD LH FRONT DOOR SCUFF PLATE LH N*m (kgf*cm, ft.*lbf) : Specified torque ٨ Non-reusable part C114131E04 SR–6 STEERING COLUMN – STEERING COLUMN ASSEMBLY STEERING COLUMN ASSEMBLY 21 (210, 16) STEERING COLUMN HOLE COVER 21 (210, 16) 35 (357, 26) NO.2 STEERING INTERMEDIATE SHAFT STEERING SLIDING YOKE SR 35 (357, 26) for 4WD: 35 (357, 26) for 2WD: STEERING INTERMEDIATE SHAFT ASSEMBLY 35 (357, 26) N*m (kgf*cm, ft.*lbf) : Specified torque STEERING INTERMEDIATE SHAFT ASSEMBLY ٨ Non-reusable part C114132E04 SR–7 STEERING COLUMN – STEERING COLUMN ASSEMBLY TRANSPONDER KEY AMPLIFIER IGNITION SWITCH LOCK CYLINDER & KEY SET for Automatic Transmission: KEY INTER LOCK SOLENOID UPPER STEERING COLUMN TUBE SNAP RING UPPER STEERING COLUMN CLAMP UPPER STEERING COLUMN BLACKET ASSEMBLY SR ٨TAPERED-HEAD BOLT IGNITION OR STARTER SWITCH ASSEMBLY TILT LEVER RETURN SPRING UN-LOCK WARNING SWITCH ASSEMBLY ٨ Non-reusable part C123160E01 SR–8 STEERING COLUMN – STEERING COLUMN ASSEMBLY SNAP RING UPPER STEERING COLUMN TUBE TILT LEVER RETURN SPRING STEERING MAIN SHAFT ASSEMBLY SR LOWER STEERING COLUMN TUBE NO.1 TILT STEERING SUPPORT COLLAR NO.1 TILT STEERING SUPPORT COLLAR STEERING COLUMN BLACKET SPACER STEERING COLUMN NO RING C114142E03 POWER STEERING – POWER STEERING SYSTEM PS–1 POWER STEERING SYSTEM PRECAUTION HANDLING PRECAUTIONS FOR STEERING SYSTEM (a) Care must be taken when replacing parts Incorrect replacement could affect the performance of the steering system and result in driving hazards HANDLING PRECAUTIONS FOR SRS AIRBAG SYSTEM (a) The vehicle is equipped with SRS (Supplemental Restraint System), such as airbags If service operation is not carried out properly in the correct sequence, the airbag may suddenly deploy and this may result in serious injury Before servicing (including inspection, replacement, removal and inspection of parts), be sure to read the precautionary notices for the supplemental restraint system (See page RS-1) PS PS–2 POWER STEERING – POWER STEERING SYSTEM PROBLEM SYMPTOMS TABLE HINT: Use the table below to help you find the cause of the problems The numbers indicate the ranked order of probability of each of the possible causes Check each part in the order suggested If necessary, replace these applicable parts Symptom Hard steering Suspected area Tires (Improperly inflated) TW-1 Power steering fluid level (Low) PS-3 Drive belt (Loose) (2TR-FE) EM-5 Drive belt (Loose) (1GR-FE) EM-5 Front wheel alignment (Incorrect) (2WD) SP-2 Front wheel alignment (Incorrect) (4WD and Pre-Runner) SP-7 Steering system joints (Worn) SP-36 Suspension arm ball joints (Worn) (4WD and Pre-Runner) SP-43 PS PS-21 12 Vane pump (1GR-FE) PS-11 13 Power steering link (2WD) PS-35 14 Power steering link (4WD and Pre-Runner) PS-60 Tires (Improperly inflated) TW-1 Front wheel alignment (Incorrect) (2WD) SP-2 Front wheel alignment (Incorrect) (4WD and Pre-Runner) SP-7 Steering column (Binding) - Power steering link (2WD) PS-35 Power steering link (4WD and Pre-Runner) PS-60 - Suspension arm ball joints (Worn) (2WD) SP-36 Suspension arm ball joints (Worn) (4WD and Pre-Runner) SP-43 Intermediate shaft, Sliding yoke (Worn) - Front wheel bearing (Worn) AH-1 Power steering link (2WD) PS-35 Power steering link (4WD and Pre-Runner) PS-60 Power steering fluid level (Low) PS-3 Steering system joints (Worn) Abnormal noise - 11 Vane pump (2TR-FE) Steering system joints (Worn) Excessive play - Suspension arm ball joints (Worn) (2WD) 10 Steering column (Binding) Poor return See page Vane pump (2TR-FE) PS-21 Vane pump (1GR-FE) PS-11 Power steering link (2WD) PS-35 Power steering link (4WD and Pre-Runner) PS-60 POWER STEERING – POWER STEERING SYSTEM PS–3 ON-VEHICLE INSPECTION INSPECT DRIVE BELT (a) Visually check the belt for defects, such as excessive wear and frayed cords If any defects are found, replace the drive belt HINT: Cracks on the rib side of a belt are considered acceptable Replace the belt if there are any missing ribs BLEED POWER STEERING SYSTEM (a) Check the fluid level (b) Jack up the front of the vehicle and support it with stands (c) Turn the steering wheel (1) With the engine stopped, turn the wheel slowly from lock to lock several times (d) Lower the vehicle (e) Start the engine (1) Run the engine at idle for a few minutes (f) Turn the steering wheel (1) With the engine idling, turn the wheel to the left or right full lock position and keep it there for to seconds Then turn the wheel to the opposite full lock position and keep it there for to seconds (step A) (2) Repeat step A several times (g) Stop the engine F040449 for 2TR-FE: Normal Abnormal (h) Check for foaming or emulsification Especially, if the system has to be bled twice because of foaming or emulsification, check for fluid leakage in the system (i) Check the fluid level PS for 1GR-FE: Normal Abnormal C114971E01 PS–4 POWER STEERING – POWER STEERING SYSTEM for 2TR-FE: for 1GR-FE: INSPECT FLUID LEVEL (a) Keep the vehicle level (b) With the engine stopped, check the fluid level in the oil reservoir If necessary, add fluid Fluid: ATF "DEXRON" II or III HINT: Check that the fluid level is within the HOT level range in the reservoir tank If the fluid is cold, check that it is within the COLD level range (c) Start the engine and let it idle (d) Turn the steering wheel from lock to lock several times to raise fluid temperature Fluid temperature: 75 to 80°C (167 to 176°F) C125125E01 for 2TR-FE: Normal Abnormal for 1GR-FE: Normal Abnormal PS C114971E01 (e) Check for foaming or emulsification If any foaming or emulsification is identified, bleed the power steering system PS–5 POWER STEERING – POWER STEERING SYSTEM for 2TR-FE: (f) With the engine idling, measure the fluid level in the oil reservoir (g) Stop the engine (h) Wait a few minutes and measure the fluid level in the oil reservoir again Maximum fluid level rise: mm (0.20 in.) If any problems are found, bleed the power steering system (i) Check the fluid level mm (0.20 in.) or less Engine Idling for 1GR-FE: Engine Stopped mm (0.20 in.) or less Engine Idling Engine Stopped C114972E01 INSPECT STEERING FLUID PRESSURE (a) for 2TR-FE: (1) Disconnect the pressure feed tube from the vane pump (See page PS-19) (b) for 1GR-FE: (1) Disconnect the pressure feed tube from the vane pump (See page PS-9) (c) Connect SST as shown in the illustration SST 09640-10010 (09641-01010, 09641-01030, 09641-01060) NOTICE: Check that the valve of SST is in the open position (d) Bleed the power steering system (e) Start the engine and let it idle (f) Turn the steering wheel from lock to lock several times to raise the fluid temperature Fluid temperature: 75 to 80 °C (167 to 176 °F) for 2TR-FE: SST PS Attachment IN Attachment OUT Pressure Feed Tube F051281E01 PS–6 POWER STEERING – POWER STEERING SYSTEM for 1GR-FE: SST Attachment IN OUT Pressure Feed Tube Attachment F043676E01 Oil Reservoir PS Gear Colsed PS Vane Pump SST Z015498E04 Oil Reservoir PS PS Gear Open PS Vane Pump SST (g) With the engine idling, close the valve of SST and check the reading on SST Fluid pressure: 8,300 to 8,800 kPa (85 to 90 kgf/cm2, 1,209 to 1,280 psi) NOTICE: • Do not keep the valve closed for more than 10 seconds • Do not let the fluid temperature become too high (h) With the engine idling, fully open the valve (i) Measure the fluid pressure at the engine speeds of 1,000 rpm and 3,000 rpm Fluid pressure difference: 490 kPa (5 kgf/cm2, 71 psi) or less NOTICE: Do not turn the steering wheel Z015499E04 (j) Oil Reservoir Lock Position PS Gear Open PS Vane Pump SST Z015500E04 With the engine idling and valve fully open, turn the steering wheel to the full lock position Fluid pressure: 8,300 to 8,800 kPa (85 to 90 kgf/cm2, 1,209 to 1,280 psi) NOTICE: • Do not keep the steering wheel in the full lock position for more than 10 seconds • Do not let the fluid temperature become too high POWER STEERING – POWER STEERING SYSTEM PS–7 (k) Disconnect SST (l) for 2TR-FE: (1) Connect the pressure feed tube to the vane pump (See page PS-25) (m) for 1GR-FE: (1) Connect the pressure feed tube to the vane pump (See page PS-15) (n) Bleed the power steering system R015649 INSPECT STEERING EFFORT (a) Center the steering wheel assembly (b) Remove the horn button assembly (See page RS558) (c) Start the engine and let it idle (d) Measure the steering effort in both directions Steering effort (Reference): 6.0 N*m (60 kgf*cm, 53 in.*lbf) or less HINT: Check the tire type, pressure and contact surfaces before making a diagnosis (e) Install the steering wheel assembly set nut Torque: 50 N*m (510 kgf*cm, 37 ft.*lbf) (f) Install the horn button assembly (See page RS558) PS