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HỆ THỐNG LÁI TRÊN XE TOYOTA RAV4 ĐỜI 1994-2000
SR0FC−01 −STEERING STEERING SYSTEM SR−1 1996 RAV4 (RM447U) STEERING SYSTEM PRECAUTION S Care must be taken to replace parts properly because they could affect the performance of the steering system and result in a driving hazard. S The TOYOTA RAV4 is equipped with SRS (Supplemental Restraint System) such as the driver airbag and front passenger airbag. Failure to carry out service operation in the correct se- quence could cause the SRS to unexpectedly deployed during servicing, possibly leading to a serious accident. Before servicing (including removal or installation of parts, inspection or replacement), be sure to read the precautionary notices in the RS section. SR0FD−01 SR−2 −STEERING TROUBLESHOOTING 1996 RAV4 (RM447U) TROUBLESHOOTING PROBLEM SYMPTOMS TABLE Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely cause of the problem. Check each part in the order shown. If necessary, repair or replace these parts. Symptom Suspect Area See page Hard steering 1. Tires (Improperly inflated) 2. Power steering fluid level (Low) 3. Drive belt (Loose) 4. Front wheel alignment (Incorrect) 5. Steering system joints (Worn) 6. Suspension arm ball joints (Worn) 7. Steering column (Binding) 8. Power steering vane pump 9. Power steering gear SA−2 SR−5 SR−3 SA−4 − SA−45 − SR−31 SR−44 Poor return 1. Tires (Improperly inflated) 2. Front wheel alignment (Incorrect) 3. Steering column (Binding) 4. Power steering gear SA−2 SA−4 − SR−44 Excessive play 1. Steering system joints (Worn) 2. Suspension arm ball joints (Worn) 3. Intermediate shaft, Sliding yoke (Worn) 4. Front wheel bearing (Worn) 5. Power steering gear − SA−45 − SA−4 SR−44 Abnormal noise 1. Power steering fluid level (Low) 2. Steering system joints (Worn) 3. Power steering vane pump 4. Power steering gear SR−5 − SR−31 SR−44 P06717 SR0FH−01 Z00038 DENSO Borroughs P06723 CORRECT WRONG WRONG −STEERING DRIVE BELT SR−3 1996 RAV4 (RM447U) DRIVE BELT INSPECTION INSPECT DRIVE BELT (a) Visually check the belt for excessive wear, frayed cords etc. If any defect has been found, replace the drive belt. HINT: Cracks on the rib side of a belt are considered acceptable. If the belt has chunks missing from the ribs, it should be replaced. (b) Using a belt tension gauge, measure the belt tension. Belt tension gauge: DENSO BTG−20 (95506−00020) Borroughs No. BT−33−73F Drive belt tension: New belt: 95 − 145 lbf Used belt: 60 − 100 lbf If the belt tension is not as specified, adjust it. HINT: S ”New belt” refers to a belt which has been used less than 5 minutes on a running engine. S ”Used belt” refers to a belt which has been used on a run- ning engine for 5 minutes or more. S After installing a belt, check that it fits properly in the ribbed grooves. S Check with your hand to confirm that the belt has not slipped out of the groove on the bottom of the pulley. S After installing a new belt, run the engine for about 5 min- utes and recheck the belt tension. SR0FF−01 R11229 Normal Abnormal SR−4 −STEERING POWER STEERING FLUID 1996 RAV4 (RM447U) POWER STEERING FLUID BLEEDING 1. CHECK FLUID LEVEL (See page SR−5) 2. JACK UP FRONT OF VEHICLE AND SUPPORT IT WITH STANDS 3. TURN STEERING WHEEL With the engine stopped, turn the wheel slowly from lock to lock several times. 4. LOWER VEHICLE 5. START ENGINE Run the engine at idle for a few minutes. 6. TURN STEERING WHEEL (a) With the engine idling, turn the wheel to left or right full lock and keep it there for 2−3 seconds, then turn the wheel to the opposite full lock and keep it there for 2−3 se- conds. (b) Repeat (a) several times. 7. STOP ENGINE 8. CHECK FOR FOAMING OR EMULSIFICATION If the system has to be bled twice specifically because of foam- ing or emulsification, check for fluid leaks in the system. 9. CHECK FLUID LEVEL (See page SR−5) SR0FG−01 R00427 R11229 Normal Abnormal R11562 Engine Idling Engine Stopped 5 mm (0.2 in.) or less −STEERING POWER STEERING FLUID SR−5 1996 RAV4 (RM447U) INSPECTION 1. CHECK 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 on the reservoir. If the fluid is cold, check that it is within the COLD LEVEL range. (c) Start the engine and run it at idle. (d) Turn the steering wheel from lock to lock several times to boost fluid temperature. Fluid temperature: 80°C (176°F) (e) Check for foaming or emulsification. If there is foaming or emulsification, bleed power steering system (See page SR−4). (f) With the engine idling, measure the fluid level in the oil reservoir. (g) Stop the engine. (h) Wait a few minutes and remeasure the fluid level in the oil reservoir. Maximum fluid level rise: 5 mm (0.20 in.) If a problem is found, bleed power steering system (See page SR−4) (i) Check the fluid level. W01159 Attachment SST In Out Pressure Feed Tube SR−6 −STEERING POWER STEERING FLUID 1996 RAV4 (RM447U) 2. CHECK STEERING FLUID PRESSURE (a) Disconnect the pressure feed tube (See page SR−33) (b) Connect SST, as shown below. SST 09640−10010 (09641−01010, 09641−01030, 09641−01060) NOTICE: Check that the valve of the SST is in the open position. (c) Bleed the power steering system (See page SR−4). (d) Start the engine and run it at idle. (e) Turn the steering wheel from lock to lock several times to boost fluid temperature. Fluid temperature: 80°C (176°F) Z15498 Oil Reservoir PS Vane Pump PS Gear SST Closed Z15499 Oil Reservoir PS Vane Pump PS Gear SST Open Z15500 Oil Reservoir PS Vane Pump PS Gear SST Open Lock Position −STEERING POWER STEERING FLUID SR−7 1996 RAV4 (RM447U) (f) With the engine idling, close the valve of the SST and ob- serve the reading on the SST. Minimum fluid pressure: 7,355 kPa (75 kgf/cm 2 , 1067 psi) NOTICE: S Do not keep the valve closed for more than 10 se- conds. S Do not let the fluid temperature become too high. (g) With the engine idling, open the valve fully. (h) Measure the fluid pressure at engine speeds of 1,000 rpm and 3,000 rpm. Difference fluid pressure: 490 kPa (5 kgf/cm 2 , 71 psi) or less NOTICE: Do not turn the steering wheel. (i) With the engine idling and valve fully opened, turn the steering wheel to full lock. Minimum fluid pressure: 7,355 kPa (75 kgf/cm 2 , 1067 psi) NOTICE: S Do not maintain lock position for more than 10 se- conds. S Do not let the fluid temperature become too high. (j) Disconnect the SST. (k) Connect the pressure feed tube (See page SR−42). (l) Bleed the power steering system (See page SR−4). R10958 SR0FE−01 SR−8 −STEERING AIR CONTROL VALVE 1996 RAV4 (RM447U) AIR CONTROL VALVE INSPECTION INSPECT AIR CONTROL VALVE (a) Turn the air conditioner switch OFF. (b) Start the engine and run it at idle. (c) Full turn the steering wheel. (d) Check that the engine rpm decreases when the vacuum hose of the air control valve is pinched. (e) Check that the engine rpm increases when the hose is re- leased. R06184 SR0FI−02 R09732 −STEERING STEERING WHEEL SR−9 1996 RAV4 (RM447U) STEERING WHEEL INSPECTION 1. CHECK STEERING WHEEL FREEPLAY With the vehicle stopped and tires facing straight ahead, rock the steering wheel gently back and forth with light finger pres- sure. Freeplay should not exceed the maximum. Maximum freeplay: 30 mm (1.18 in.) 2. CHECK STEERING EFFORT (a) Center the steering wheel. (b) Remove the steering wheel pad (See page SR−12). (c) Start the engine and run it at idle. (d) Measure the steering effort in both directions. Reference: 5.9 N·m (60 kgf·cm, 52 in.·lbf) HINT: Be sure to consider the tire type, pressure and contact surface before making your diagnosis. (e) Torque the steering wheel set nut. Torque: 34 N·m (350 kgf·cm, 25 ft·lbf) (f) Install the steering wheel pad (See page SR−19). SR0F0−03 SR−10 −STEERING NON−TILT STEERING COLUMN 1996 RAV4 (RM447U) NON−TILT STEERING COLUMN COMPONENTS [...]... SR0F6−03 SR−23 STEERING 1996 RAV4 (RM447U) − TILT STEERING COLUMN SR−24 STEERING REMOVAL (See page SR−12) 1996 RAV4 (RM447U) − TILT STEERING COLUMN SR0F7−02 SR−25 STEERING − TILT STEERING COLUMN DISASSEMBLY SR0F8−04 NOTICE: When using a vise, do not overtighten it 1 REMOVE 3 TENSION SPRINGS HINT: Remove the springs with the tilt function at maximum tilt up 2 REMOVE STEERING COLUMN UPPER BRACKET AND STEERING. .. HINT: Install the springs with the tilt function at maximum tilt up 8 INSTALL STEERING COLUMN UPPER BRACKET AND STEERING COLUMN UPPER CLAMP (See page SR−18) 9 CHECK TILT STEERING OPERATION SR−30 STEERING INSTALLATION (See page SR−19) 1996 RAV4 (RM447U) − TILT STEERING COLUMN SR0FB−02 SR−31 − STEERING POWER STEERING VANE PUMP POWER STEERING VANE PUMP SR0FV−02 COMPONENTS 13 (130, 9) Pressure Feed Tube Union... the connectors 4 INSTALL STEERING COLUMN PROTECTOR Torque the bolt Torque: 5.0 N·m (50 kgf·cm, 44 in.·lbf) SR−20 STEERING − NON−TILT STEERING COLUMN 5 Non−tilt Steering Column : Tilt Steering Column : A Matchmarks B W02017 Non−Tilt Steering Column: INSTALL NO.2 INTERMEDIATE SHAFT (a) Connect the No.2 intermediate shaft to the main shaft (b) Temporarily tighten the bolt A 6 Tilt Steering Column: INSTALL... (d) 18 1996 RAV4 (RM447U) Install the pad after confirming that the circumference groove of the torx screws are caught on the screw case Using a torx socket wrench, torque the 2 screws Torque: 8.8 N·m (90 kgf·cm, 78 in.·lbf) Install the steering wheel lower No.2 and No.3 covers CHECK STEERING WHEEL CENTER POINT SR−22 STEERING − TILT STEERING COLUMN TILT STEERING COLUMN COMPONENTS 1996 RAV4 (RM447U)... assembly set bolts and 2 nuts Non−Tilt Steering Column : Tilt Steering Column : A Matchmarks B W02017 14 Matchmarks W02018 1996 RAV4 (RM447U) (a) (b) Tilt Steering Column: REMOVE SLIDING YOKE Remove the bolt Shift the sliding yoke and place matchmarks on the main shaft and sliding yoke SR−15 STEERING − NON−TILT STEERING COLUMN DISASSEMBLY Screw Extractor 1996 RAV4 (RM447U) R10987 SR0F2−01 NOTICE: When... shaft (c) Remove the shaft from the steering column upper tube SST W01124 1996 RAV4 (RM447U) SR−26 STEERING (d) (e) Collar − TILT STEERING COLUMN Remove the compression spring and bearing thrust collar from the shaft Using a screwdriver and a hammer, remove the collar from the shaft W01125 7 (a) (b) Pin Punch No.2 Tilt Steering Shaft 1996 RAV4 (RM447U) W01126 REMOVE TILT STEERING PAWL Using a pin punch... and a hammer, tap out the tilt steering No.2 shaft Remove the pin from the pawl SR−27 STEERING INSPECTION (See page SR−16) 1996 RAV4 (RM447U) − TILT STEERING COLUMN SR0F9−02 SR−28 STEERING − TILT STEERING COLUMN SR0FA−04 REASSEMBLY NOTICE: When using a vise, do not overtightened it 1 COAT WITH MOLYBDENUM DISULFIDE LITHIUM BASE GREASE (See page SR−22) 2 (a) INSTALL TILT STEERING PAWL Using a plastic... in the holes SR−17 STEERING − NON−TILT STEERING COLUMN 8 (a) Non−tilt Steering Column : Bearing INSPECT BEARING Check the bearing rotation condition and check for abnormal noise If the bearing is worn or damaged, replace the steering column tube (b) Coat the bearing with molybdenum disulfide lithium base grease Tilt Steering Column : Bearing W01135 9 W00088 1996 RAV4 (RM447U) Tilt Steering Column: INSPECT... not to pull the airbag wire harness 2 (a) (b) (c) (d) 1996 RAV4 (RM447U) REMOVE STEERING WHEEL Disconnect the connector Remove the steering wheel set nut Place matchmarks on the steering wheel and main shaft assembly Using SST, remove the wheel SST 09950−50010, (09951−05010, 09952−05010, 09953−05020, 09954−05020) SR−13 STEERING 3 (a) − NON−TILT STEERING COLUMN REMOVE LOWER FINISH PANEL Remove the 2 screws... of the steering main shaft rotation condition and check for abnormal noise 10 Tilt Steering Column: IF NECESSARY, REPLACE BEARING (a) Remove the bearing from the steering main shaft (b) Coat a new bearing with molybdenum disulfide lithium base grease (c) Install the bearing SR−18 STEERING − NON−TILT STEERING COLUMN REASSEMBLY SR0F4−01 NOTICE: When using a vise, do not overtighten it 1 INSTALL STEERING . SR0FC−01 STEERING STEERING SYSTEM SR−1 1996 RAV4 (RM447U) STEERING SYSTEM PRECAUTION S Care must be taken to replace parts properly because they could affect the performance of the steering system. (RM447U) NON−TILT STEERING COLUMN COMPONENTS STEERING NON−TILT STEERING COLUMN SR−11 1996 RAV4 (RM447U) SR0F1−04 SR−12 STEERING NON−TILT STEERING COLUMN 1996 RAV4 (RM447U) REMOVAL 1. REMOVE STEERING. bleed power steering system (See page SR−4) (i) Check the fluid level. W01159 Attachment SST In Out Pressure Feed Tube SR−6 STEERING POWER STEERING FLUID 1996 RAV4 (RM447U) 2. CHECK STEERING FLUID