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ST_STEERING_SYSTEM(转向系统).pdf

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ST_STEERING_SYSTEM 转向 系统
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ST-1 STEERING C D E F H I J K L M SECTION ST A B ST N O P CONTENTS STEERING SYSTEM PRECAUTION ........................................... .... 2 PRECAUTIONS .............................................. ..... 2 Precaution for Supplemental Restraint System (SRS) “AIR BAG“ and “SEAT BELT PRE-TEN- SIONER“ ............................................................. ......2 Precaution for Steering System .......................... ......2 PREPARATION ........................................ .... 3 PREPARATION .............................................. ..... 3 Special Service Tool ........................................... ......3 Commercial Service Tool .................................... ......4 FUNCTION DIAGNOSIS ........................... .... 5 HEATED STEERING WHEEL ........................ ..... 5 System Diagram .................................................. ......5 System Description ............................................. ......5 Component Parts Location .................................. ......5 Component Description ....................................... ......6 COMPONENT DIAGNOSIS ...................... .... 7 HEATED STEERING WHEEL ........................ ..... 7 Wiring Diagram ................................................... ......7 SYMPTOM DIAGNOSIS ........................... .... 9 NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING ........................ ..... 9 NVH Troubleshooting Chart ................................ ......9 ON-VEHICLE MAINTENANCE ................. ...10 POWER STEERING FLUID ........................... ....10 Checking Fluid Level ........................................... ....10 Checking Fluid Leakage ...................................... ....10 Air Bleeding Hydraulic System ............................ ....10 STEERING WHEEL ........................................ ....12 On-Vehicle Inspection and Service ..................... ....12 ON-VEHICLE REPAIR .............................. ...14 POWER STEERING OIL PUMP .......................14 On-Vehicle Inspection and Service ..................... ....14 REMOVAL AND INSTALLATION ............ ...15 STEERING WHEEL ..........................................15 On-Vehicle Inspection and Service ..................... ....15 Removal and Installation ..................................... ....16 STEERING COLUMN ........................................17 Removal and Installation ..................................... ....17 Disassembly and Assembly ................................. ....20 POWER STEERING GEAR AND LINKAGE ....22 Removal and Installation ..................................... ....22 POWER STEERING OIL PUMP .......................24 Removal and Installation ..................................... ....24 HYDRAULIC LINE ............................................26 Removal and Installation ..................................... ....26 DISASSEMBLY AND ASSEMBLY ........... ...28 POWER STEERING OIL PUMP .......................28 Disassembly and Assembly ................................. ....28 STEERING GEAR AND LINKAGE ...................30 Disassembly and Assembly ................................. ....30 SERVICE DATA AND SPECIFICATIONS (SDS) ......................................................... ...33 SERVICE DATA AND SPECIFICATIONS (SDS) .................................................................33 Steering Wheel .................................................... ....33 Steering Column .................................................. ....33 Steering Outer Socket and Inner Socket ............. ....33 Oil Pump .............................................................. ....34 Steering Fluid ...................................................... ....34ST-2PRECAUTIONS PRECAUTION PRECAUTIONS Precaution for Supplemental Restraint System (SRS) “AIR BAG“ and “SEAT BELT PRE-TENSIONER“ INFOID:0000000001297909 The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted. Information necessary to service the system safely is included in the SR and SB section of this Service Man- ual. WARNING: ? To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer.  Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the SR section.  Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har- ness connectors. Precaution for Steering System INFOID:0000000001297910  Before disassembly, thoroughly clean the outside of the unit.  Disassembly should be done in a clean work area. It is important to prevent the internal parts from becoming contaminated by dirt or other foreign matter.  For easier and proper assembly, place disassembled parts in order on a parts rack.  Use nylon cloth or paper towels to clean the parts; common shop rags can leave lint that might interfere with their operation.  Before inspection or reassembly, carefully clean all parts with a general purpose, non-flammable solvent.  Before assembly, apply a coat of recommended Genuine NISSAN PSF or equivalent to hydraulic parts. Petroleum jelly may be applied to O-rings and seals. Do not use any grease.  Replace all gaskets, seals and O-rings. Avoid damaging O-rings, seals and gaskets during installation. Per- form functional tests whenever designated.PREPARATION ST-3C D E F H I J K L M A B ST N O P PREPARATION PREPARATION Special Service Tool INFOID:0000000001297911 The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here. Tool number (Kent-Moore No.) Tool name Description ST3127 S000 (See J-25765-A) Preload gauge1. GG9103000(J-25765-A)Torque wrench2. HT62940000( — )Socket adapter3. HT62900000( — )Socket adapter Inspecting of pinion rotating torque and rota- tional torque for ball joint HT72520000 (J-25730-A) Ball joint remover Removing steering outer socket 1. KV48105300-4 and 5295262U10 ( — ) Connector A and O-ring 2. KV48105300-3 and 5295262U00 ( — ) Eye-bolt and O-ring 3. KV48103500 (J-26357 and J-26357-10) Pressure gauge and shut-off valve 4. KV48105300-1 and 5295262U00 ( — ) Connector B and O-ring 5. KV48105300-2 ( — ) Nut Measuring oil pump relief pressure — (J-44372) Spring gauge Measuring steering wheel turning force KV40107300 (—) Crimping boot bands S-NT541 NT146 SGIA0427E LST024 ZZA1229DST-4PREPARATION Commercial Service Tool INFOID:0000000001297912 KV481J0010 (J-1859A) Steering wheel puller Removing steering wheel KV481J0020 (J-42578) Steering wheel puller legs Removing steering wheel Tool number (Kent-Moore No.) Tool name Description LHIA0043E LHIA0044E Tool name Description Power tool Removing nuts and bolts PBIC0190EHEATED STEERING WHEEL ST-5C D E F H I J K L M A B ST N O P FUNCTION DIAGNOSIS HEATED STEERING WHEEL System Diagram INFOID:0000000001710949 System Description INFOID:0000000001710950 The heated steering wheel switch controls the heated steering relay. When the switch is turned on, the relay is energized and the heated steering system will operate. The heated steering system will turn off when the steering wheel temperature reaches approximately 30° C (86° F). Heated steering system operation can also be canceled by pressing the heated steering wheel switch again. NOTE: The heated steering system will operate ONLY when the steering wheel surface is below approximately 20° C (68° F). If the weather is warm enough, the heated steering system may not turn on, giving the appearance that the system does not operate. Component Parts Location INFOID:0000000001710951 AWGIA0022GB 1. Heated steering wheel switch M7 2. Heated steering relay M2 3. Combination switch (heated steering) M5 4. Heated steering wheel ALGIA0025ZZST-6HEATED STEERING WHEEL Component Description INFOID:0000000001710952 Heated steering wheel switch  Controls the heated steering relay and operates the heated steering system.  Turns the indicator lamp ON when the system is activated. Heated steering relay  Operates the heated steering system with the control signal from the heated steering wheel switch. Heated steering wheel  Heats the heating element with the power supplied from the heated steering relay.HEATED STEERING WHEEL ST-7C D E F H I J K L M A B ST N O P COMPONENT DIAGNOSIS HEATED STEERING WHEEL Wiring Diagram INFOID:0000000001710953 ALGWA0006GBST-8HEATED STEERING WHEEL ALGIA0017GBNOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING ST-9C D E F H I J K L M A B ST N O P SYMPTOM DIAGNOSIS NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING NVH Troubleshooting Chart INFOID:0000000001297913 Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts. ×: Applicable Reference page ST-10 ST-10 ST-30 ST-30 ST-30 ST-10 ST-15 ST-15 EM-13, “Checking Drive Belts“ (VQ40DE), EM-153, “Checking Drive Belts“ (VK56DE) ST-15 ST-17 ST-22 ST-17 ST-17 ST-22DLN-306, “NVH Troubleshooting Chart“ (2F1310), DLN-314, “NVH Troubleshooting Chart“ (2S1330), DLN-323, “NVH Troubleshooting Chart“ (2S1350) DLN-336, “NVH Troubleshooting Chart“ (R180A), DLN-370, “NVH Troubleshooting Chart“ (M205) FAX-4, “NVH Troubleshooting Chart“ FSU-4, “NVH Troubleshooting Chart“ WT-33, “NVH Troubleshooting Chart“ WT-33, “NVH Troubleshooting Chart“ FAX-4, “NVH Troubleshooting Chart“ BR-5, “NVH Troubleshooting Chart“ Possible cause and suspected parts Fluid level Air in hydraulic system Outer socket ball joint swinging force Outer socket ball joint rotating torque Outer socket ball joint end play Steering fluid leakage Steering wheel play Steering gear rack sliding force Drive belt looseness Improper steering wheel Improper installation or looseness of tilt lock lever Mounting rubber deterioration Steering column deformation or damage Improper installation or looseness of steering column Steering linkage looseness PROPELLER SHAFT FRONT FINAL DRIVE WHEEL HUB SUSPENSION TIRES ROAD WHEEL DRIVE SHAFT BRAKES Symptom Noise ×××××××× × × × ×××××× Shake ××× × ×××××× Vibration ××××× × ××× × Shimmy ××× × ×××× × Shudder × × ×××× ×ST-10POWER STEERING FLUID ON-VEHICLE MAINTENANCE POWER STEERING FLUID Checking Fluid Level INFOID:0000000001297914 Check fluid level, referring to the scale on the reservoir tank. Use HOT range for fluid temperatures of 50° – 80°C (122° – 176°F). Use COLD range for fluid temperatures of 0° – 30°C (32° – 86°F). CAUTION:  Do not overfill.  Do not reuse any power steering fluid.  Recommended fluid is Genuine NISSAN PSF or equivalent. Refer to MA-10, “Fluids and Lubricants“. Checking Fluid Leakage INFOID:0000000001297915 Check the hydraulic piping lines for improper attachment, leaks, cracks, damage, loose connections, chafing and deterioration. 1. Run the engine until the fluid temperature reaches 50° – 80°C (122° – 176°F) in the reservoir tank. Keep engine speed idle. CAUTION: Do not allow steering fluid reservoir tank to go below the MIN level line. Check tank frequently and add fluid as needed. 2. Turn the steering wheel to the right and left several times. 3. Hold the steering wheel at each “locked” position for five sec- onds to check for fluid leakage. CAUTION: Do not hold steering wheel in the locked position for more than 10 seconds. (There is the possibil- ity that the oil pump may be damaged.) 4. If fluid leakage at a connection is noticed, loosen the connection and then retighten. Do not over-tighten connector as this can damage O-ring, washer and connector. Refer to ST-14 and ST-26. 5. If fluid leakage from the oil pump is noticed, check the oil pump. Refer to ST-14. 6. Check steering gear boots for accumulation of fluid, indicating a leak from the steering gear. CAUTION: Do not reuse copper washers. Air Bleeding Hydraulic System INFOID:0000000001297916 Incomplete air bleeding causes the following:  Air bubbles in reservoir tank  Clicking noise in oil pump  Excessive buzzing in oil pump When this happens bleed the air again. NOTE: When the vehicle is stationary or while the steering wheel is being turned slowly, some noise may be heard from the oil pump or gear. This noise is normal and does not affect any system. 1. Check for fluid leakage. Refer to ST-10, “Checking Fluid Leakage“. 2. Start the engine and turn the steering wheel fully to the right and left several times. CAUTION: Do not allow steering fluid reservoir tank to go below the MIN level line. Check tank frequently and add fluid as needed. 3. Run the engine at idle speed. Hold the steering wheel at each “locked“ position for three seconds. CAUTION: LGIA0021E SGIA0506EPOWER STEERING FLUID ST-11C D E F H I J K L M A B ST N O P Do not hold steering wheel in the locked position for more than 10 seconds. (There is the possibil- ity that oil pump may be damaged.) 4. Repeat step 3 several times at about three second intervals. 5. Check for air bubbles, cloudy fluid and fluid leakage. 6. If air bubbles or cloudiness exists, perform steps 3 and 4 again until air bubbles and cloudiness do not exist. 7. Stop the engine and check fluid level.ST-12STEERING WHEEL STEERING WHEEL On-Vehicle Inspection and Service INFOID:0000000001297935 CHECKING CONDITION OF INSTALLATION  Check the installation condition of the steering gear assembly, front suspension, axle and steering column.  Check if movement exists when the steering wheel is pushed up and down, left and right and in the axial direction.  Check if the mounting nuts for the steering gear assembly are loose. Refer to ST-22, “Removal and Installation“. CHECKING STEERING WHEEL PLAY 1. Turn the tires straight ahead and start the engine. Lightly turn the steering wheel left and right to the point where the tires start moving, and measure the distance that the outer circumference of the steering wheel travels. CHECKING NEUTRAL POSITION ON STEERING WHEEL  Check the neutral position on the steering wheel after confirming the front wheel alignment is correct. Refer to FSU-5, “Front Wheel Alignment“. 1. Turn the tires straight ahead, check if the steering wheel is in the neutral position. 2. If it is not in the neutral position, remove the steering wheel and reinstall it correctly on the steering stem, within two teeth of the original position. 3. If th
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