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STEERING SYSTEM SECTION
GI MA EM LC EC
ST
CONTENTS
PRECAUTIONS ...............................................................2 Supplemental Restraint System (SRS) AIR BAG and SEAT BELT PRE-TENSIONER...............2 Precautions for Steering System.................................2 PREPARATION ...............................................................3 Special Service Tools ..................................................3 Commercial Service Tool.............................................4 NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING .....................................................5 NVH Troubleshooting Chart.........................................5 ON-VEHICLE SERVICE ..................................................6 Checking Steering Wheel Play....................................6 Checking Neutral Position on Steering Wheel ............6 PRE-CHECKING ........................................................6 CHECKING ...............................................................6 Front Wheel Turning Angle..........................................6 Checking Gear Housing Movement ............................6 Checking and Adjusting Drive Belts ............................7 Checking Steering Gear and Linkage .........................7 STEERING GEAR ......................................................7 STEERING LINKAGE .................................................7 Checking Fluid Level ...................................................7 Checking Fluid Leakage ..............................................7 Bleeding Hydraulic System..........................................8 Checking Steering Wheel Turning Force ....................8 Checking Hydraulic System.........................................9 STEERING WHEEL AND STEERING COLUMN .........10 Components...............................................................10 Removal and Installation ...........................................10 STEERING WHEEL .................................................10
STEERING COLUMN ...............................................11
FE CL MT AT AX SU BR
Disassembly and Assembly.......................................13 Inspection...................................................................14 TILT MECHANISM ...................................................14 POWER STEERING GEAR AND LINKAGE ................15 Components...............................................................15 Removal and Installation ...........................................16 Inspection...................................................................17 STEERING GEAR ....................................................18 BOOT .....................................................................18 TIE-ROD OUTER AND INNER SOCKETS..................18 Assembly ...................................................................18 Adjustment .................................................................20 POWER STEERING OIL PUMP (QG ENGINE) ...........21 Components...............................................................21 Inspection...................................................................21 POWER STEERING OIL PUMP (YD ENGINE) ............22 Components...............................................................22 Pre-disassembly Inspection.......................................22 Removal and Installation ...........................................23 Disassembly...............................................................23 Inspection...................................................................24 Assembly ...................................................................25 SERVICE DATA AND SPECIFICATIONS (SDS) .........26 General Specifications...............................................26 Steering Wheel ..........................................................26 Steering Column ........................................................26 Steering Gear and Linkage .......................................27 Power Steering ..........................................................27
RS BT HA SC EL IDX
PRECAUTIONS
Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
NLST0001
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER" used along with a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. The SRS system composition which is available to NISSAN MODEL V10 is as follows (The composition varies according to the destination and optional equipment.): ¼ For a frontal collision The Supplemental Restraint System consists of driver air bag module (located in the center of the steering wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable. ¼ For a side collision The Supplemental Restraint System consists of front side air bag module (located in the outer side of front seat), side air bag (satellite) sensor, diagnosis sensor unit (one of components of air bags for a frontal collision), wiring harness, warning lamp (one of components of air bags for a frontal collision). Information necessary to service the system safely is included in the RS section of this Service Manual. WARNING: ¼ 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 should be performed by an authorized NISSAN dealer. ¼ 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 RS section. ¼ Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual. Spiral cable and wiring harnesses covered with yellow insulation tape either just before the harness connectors or for the complete harness are related to the SRS.
Precautions for Steering System
¼ ¼ ¼ ¼ ¼ ¼ ¼
NLST0003
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. Place disassembled parts in order, on a parts rack, for easier and proper assembly. Use nylon cloths 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 power steering fluid* to hydraulic parts. Vaseline 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. Perform functional tests whenever designated. *: DEXRONTMIII or equivalent. Refer to MA-20, "Fluids and Lubricants".
ST-2
PREPARATION
Special Service Tools
Special Service Tools
Tool number Tool name KV48102500 Pressure gauge adapter Description Measuring oil pressure
NLST0004
GI MA EM LC
NT542
ST27180001 Steering wheel puller
Removing steering wheel
EC FE CL
NT544
HT72520000 Ball joint remover
Removing ball joint a: 33 mm (1.30 in) b: 50 mm (1.97 in) r: R11.5 mm (0.453 in)
MT AT AX
NT546
KV48103500 Pressure gauge
Measuring oil pressure
SU BR
NT547
ST3127S000 1 GG91030000 Torque wrench 2 HT62940000 Socket adapter 3 HT62900000 Socket adapter
NT541
Measuring turning torque
RS BT
Removing and Installing power steering oil pump
KV48105210 Sprocket holder
HA SC EL IDX
NT809
ST-3
PREPARATION
Commercial Service Tool
Commercial Service Tool
Tool name Oil pump attachment Description Disassembling and assembling oil pump Unit: mm (in)
NLST0005
NT774
ST-4
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: Applicable Judder Shimmy
Symptom STEERING Vibration Shake Noise Fluid level Air in hydraulic system × × × × ×
Tie-rod ball joint swinging force Tie-rod ball joint rotating torque Tie-rod ball joint end play Steering gear fluid leakage Steering wheel play Steering gear rack sliding force Drive belt looseness Improper steering wheel Improper installation or looseness or tilt lock lever Mounting rubber deterioration Steering column deformation or damage Improper installation or looseness of steering column Steering linkage looseness DRIVE SHAFT AXLE SUSPENSION TIRES ROAD WHEEL BRAKES
Possible cause and SUSPECTED PARTS
ST-7 ST-8 ST-18 ST-18 ST-18 ST-7 ST-6 ST-8 Refer to EM-13, EM-117. -- ST-10 ST-6 ST-14 ST-13 ST-15 AX-10 AX-3, AX-22 SU-4 SU-4 SU-4 BR-9
Reference page
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
ST-5
× × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × ×
× × × × × × × × × ×
NVH Troubleshooting Chart
NLST0006S01
NLST0006
IDX
EL
SC
HA
BT
RS
BR
SU
AX
AT
MT
CL
FE
EC
LC
EM
MA
GI
ON-VEHICLE SERVICE
Checking Steering Wheel Play
Checking Steering Wheel Play
¼
NLST0007
¼
SST489B
With wheels in a straight-ahead position, check steering wheel play. Steering wheel play: 35 mm (1.38 in) or less If it is not within specification, check the following for loose or worn components. Steering gear assembly Steering column Front suspension and axle
NLST0008
Checking Neutral Position on Steering Wheel
PRE-CHECKING
¼
NLST0008S01
¼
Make sure that wheel alignment is correct. Wheel alignment: Refer to SU-15, SDS. Verify that the steering gear is centered before removing the steering wheel.
NLST0008S02
CHECKING
1.
SST490BA
2. 3.
Check that the steering wheel is in the neutral position when driving straight ahead. If it is not in the neutral position, remove the steering wheel and reinstall it correctly. If the neutral position is between two teeth, loosen tie-rod lock nuts. Turn the tie-rods by the same amount in opposite directions on both left and right sides.
Front Wheel Turning Angle
1.
NLST0009
2.
Rotate steering wheel all the way right and left; measure turning angle. Turning angle of full turns: Refer to SU-15, SDS. If it is not within specification, check rack stroke. Rack stroke "S": Refer to SDS, ST-27.
SMA127
Checking Gear Housing Movement
1. ¼
NLST0010
2.
SST663B
Check the movement of steering gear housing during stationary steering on a dry paved surface. Apply a force of 49 N (5 kg, 11 lb) to steering wheel to check the gear housing movement. Turn off ignition key while checking. Movement of gear housing: ±2 mm (±0.08 in) or less If movement exceeds the limit, replace mount insulator after confirming proper installation of gear housing clamps.
ST-6
ON-VEHICLE SERVICE
Checking and Adjusting Drive Belts
Checking and Adjusting Drive Belts
Refer to EM-13, EM-117, "Checking Drive Belts".
NLST0011
GI MA EM LC
Checking Steering Gear and Linkage
STEERING GEAR
¼ ¼ ¼
NLST0037 NLST0037S01
EC FE CL MT
Check gear housing and boots for looseness, damage or grease leakage. Check connection with steering column for looseness.
NLST0037S02
STEERING LINKAGE
Check ball joint, dust cover and other component parts for looseness, wear, damage or grease leakage.
SMA851B
Checking Fluid Level
NLST0012
Check fluid level, referring to the scale on reservoir tank. Use "HOT" range for fluid temperatures of 50 to 80°C (122 to 176°F). Use "COLD" range for fluid temperatures of 0 to 30°C (32 to 86°F). CAUTION: ¼ Do not overfill. ¼ Recommended fluid is DEXRONTMIII or equivalent. Refer to MA-20, "Fluids and Lubricants".
YST003
AT AX SU BR
Checking Fluid Leakage
NLST0013
YST028
Check the lines for improper attachment and for leaks, cracks, damage, loose connections, chafing and deterioration. 1. Run engine between idle speed and 1,000 rpm. Make sure temperature of fluid in oil tank rises to 60 to 80°C (140 to 176°F). 2. Turn steering wheel right-to-left several times. 3. Hold steering wheel at each "lock" position for five seconds and carefully check for fluid leakage. CAUTION: Do not hold the steering wheel in a locked position for more than 15 seconds. 4. If fluid leakage at connectors is noticed, loosen flare nut and then retighten. Do not overtighten connector as this can damage O-ring, washer and connector. 5. If fluid leakage from power steering pump is noticed, check power steering pump. Refer to ST-21. 6. Check rack boots for accumulation of power steering fluid.
RS BT HA SC EL IDX
YST005
ST-7
ON-VEHICLE SERVICE
Bleeding Hydraulic System
Bleeding Hydraulic System
1. 2.
NLST0014
Raise front end of vehicle until wheels are clear of the ground. Add fluid into oil tank to specified level. Then quickly turn steering wheel fully to right and left and lightly touch steering stoppers. Repeat steering wheel operation until fluid level no longer decreases. 3. Start engine. Repeat step 2. above. ¼ Incomplete air bleeding will cause the following to occur. When this happens, bleed air again. a) Air bubbles in reservoir tank b) Clicking noise in oil pump c) Excessive buzzing in oil pump Fluid noise may occur in the valve or oil pump. This is common when the vehicle is stationary or while turning the steering wheel slowly. This does not affect the performance or durability of the system.
Checking Steering Wheel Turning Force
1. 2. 3.
NLST0015
SST491B
SST090B
Park vehicle on a level, dry surface and set parking brake. Start engine. Bring power steering fluid up to adequate operating temperature. [Make sure temperature of fluid is approximately 60 to 80°C (140 to 176°F).] Tires need to be inflated to normal pressure. 4. Check steering wheel turning force when steering wheel has been turned 360° from the neutral position. Steering wheel turning force: 26 - 32 N (2.7 - 3.3 kg, 5.8 - 7.2 lb) 5. If steering wheel turning force is out of specification, check rack sliding force. a. Disconnect steering column lower joint and knuckle arms from the gear. b. Start and run engine at idle to make sure steering fluid has reached normal operating temperature. c. Pull tie-rod slowly to move it from neutral position to ±11.5 mm (±0.453 in) at speed of 3.5 mm (0.138 in)/s. Check that rack sliding force is within specification. Average rack sliding force: 197 - 255 N (20.1 - 26.0 kg, 44.3 - 57.3 lb) 6. If rack sliding force is not within specification, replace steering gear assembly. 7. If rack sliding force is OK, inspect steering column. Refer to ST-13.
ST-8
ON-VEHICLE SERVICE
Checking Hydraulic System
Checking Hydraulic System
NLST0016
SST834-I
Before starting, check belt tension, driving pulley and tire pressure. 1. Set Tool. Open shut-off valve. Then bleed air. Refer to "Bleeding Hydraulic System", ST-8. 2. Run engine at idle speed or 1,000 rpm. Make sure temperature of fluid in tank rises to 60 to 80°C (140 to 176°F). WARNING: Warm up engine with shut-off valve fully opened. If engine is started with shut-off valve closed, fluid pressure in oil pump increases to maximum. This will raise oil temperature abnormally. 3. Check pressure with steering wheel fully turned to left and right positions with engine idling at 1,000 rpm. CAUTION: Do not hold the steering wheel in a locked position for more than 15 seconds. Oil pump maximum standard pressure: QG engine 8,100 - 8,700 kPa (81 - 87 bar, 82.6 - 88.7 kg/cm2, 1,175 - 1,262 psi) YD engine 8,520 - 9,320 kPa (85.2 - 93.2 bar, 86.9 - 95.1 kg/cm2, 1,235 - 1,351 psi) ¼ If pressure reaches maximum operating pressure, system is OK. ¼ If pressure increases above maximum operating pressure, check power steering pump flow control valve. Refer to ST-21. 4. If power steering pressure is below the maximum operating pressure, slowly close shut-off valve and check pressure again. CAUTION: Do not close shut-off valve for more than 15 seconds. ¼ If pressure increases to maximum operating pressure, gear is damaged. Refer to "Removal and Installation", ST-16. ¼ If pressure remains below maximum operating pressure, pump is damaged. Refer to "Disassembly", ST-23. 5. After checking hydraulic system, remove Tool and add fluid as necessary. Then completely bleed air out of system. Refer to ST-8.
GI MA EM LC EC FE CL MT AT AX SU BR
RS BT HA SC EL IDX
ST-9
STEERING WHEEL AND STEERING COLUMN
Components
Components
NLST0017
YST029
1. 2. 3.
Air bag module Steering wheel Spiral cable
4. 5. 6.
Column cover Combination switch Steering column assembly
7. 8. 9.
Clip Hole cover Lower joint
CAUTION: ¼ The rotation of the spiral cable (SRS "Air bag" component part) is limited. If the steering gear must be removed, set the front wheels in the straight-ahead direction. Do not rotate the steering column while the steering gear is removed. ¼ Remove the steering wheel before removing the steering lower joint to avoid damaging the SRS spiral cable.
Removal and Installation
STEERING WHEEL
¼ ¼
NLST0018 NLST0018S01
Remove remote audio control (if applied) Remove air bag module and spiral cable. Refer to RS-24, "Removal -- Air Bag Module and Spiral Cable".
ST-10
STEERING WHEEL AND STEERING COLUMN
Removal and Installation (Cont'd)
YST030
Align spiral cable correctly when installing steering wheel. Set the front wheels in the straight-ahead position. Make sure that the spiral cable is in the neutral position. The neutral position is detected by turning left 2.5 revolutions from the right end position. Align the two marks ( ). CAUTION: The spiral cable may snap due to steering operation if the cable is installed in an improper position. Also, with the steering linkage disconnected, the cable may snap by turning the steering wheel beyond the limited number of turns. (The spiral cable can be turned up to 2.5 turns from the neutral position to both the right and left.)
¼ a) b)
GI MA EM LC EC FE CL MT
¼
Remove steering wheel with Tool.
AT AX SU BR
SST777C
STEERING COLUMN
¼ Remove key interlock cable (A/T models).
NLST0018S02
RS BT HA
YST031
¼ ¼
When installing steering column, fingertighten all lower bracket and clamp retaining bolts; then tighten them securely. Do not apply undue stress to steering column. When attaching coupling joint, be sure tightening bolt faces cutout portion.
SC EL IDX
SST800A
ST-11
STEERING WHEEL AND STEERING COLUMN
Removal and Installation (Cont'd)
¼
Align slit of lower joint with projection on dust cover. Insert joint until surface A contacts surface B. CAUTION: After installation, turn steering wheel to make sure it moves smoothly. Ensure the number of turns are the same from the straight forward position to left and right locks. Be sure that the steering wheel is in a neutral position when driving straight ahead.
SST491C
ST-12
STEERING WHEEL AND STEERING COLUMN
Disassembly and Assembly
Disassembly and Assembly
=NLST0019
GI MA EM LC EC FE CL MT AT AX SU BR
¼ a) Steering lock Break self-shear type screws with a drill or other appropriate tool.
NST048
1. 2.
Combination switch Column shaft assembly
3. 4.
Clip Lower seal cover
5.
Hole cover
RS BT HA
YST032
b)
Install new self-shear type screws and then cut off self-shear type screw heads.
SC EL IDX
YST033
ST-13
STEERING WHEEL AND STEERING COLUMN
Inspection
Inspection
¼
NLST0020
SST855C
When steering wheel does not turn smoothly, check the steering column as follows and replace damaged parts. a) Check column bearings for damage or unevenness. Lubricate with recommended multi-purpose grease or replace steering column as an assembly, if necessary. b) Check jacket tube for deformation or breakage. Replace if necessary. ¼ When the vehicle comes into a light collision, check length "L". Steering column length "L": Refer to SDS, ST-26. If out of the specifications, replace steering column as an assembly.
TILT MECHANISM
¼
NLST0020S01
After installing steering column, check tilt mechanism operation.
NST049
ST-14
POWER STEERING GEAR AND LINKAGE
Components
Components
NLST0021
GI MA EM LC EC FE CL MT AT AX SU
NST054
BR
1. 2. 3. Gear assembly Tie-rod outer socket Lock plate 4. 5. 6. Dust boot Boot band Boot band 7. 8. 9. Spacer ring Tie-rod inner socket Cotter pin
RS BT HA SC EL IDX
ST-15
POWER STEERING GEAR AND LINKAGE
Removal and Installation
Removal and Installation
NLST0022
NST050
1. 2. 3.
Lower joint Washer Gear and linkage assembly
4. 5.
Upper gear housing mounting bracket Rack mounting insulator
6. 7.
Lower gear housing mounting bracket Cotter pin
SFA455BA
CAUTION: ¼ The rotation of the spiral cable (SRS "Air bag" component part) is limited. If the steering gear must be removed, set the front wheels in the straight-ahead direction. Do not rotate the steering column while the steering gear is removed. ¼ Remove the steering wheel before removing the steering lower joint to avoid damaging the SRS spiral cable. ¼ Detach tie-rod outer sockets from knuckle arms with Tool. 1. Remove stabilizer fixing bolts. Refer to SU-12, "Removal and Installation". 2. Disconnect lower joint. 3. Remove gear housing mounting bracket fixing bolts. 4. Remove steering gear assembly.
ST-16
POWER STEERING GEAR AND LINKAGE
Removal and Installation (Cont'd)
¼ ¼
SST879C
¼
Install pipe connector. Observe specified tightening torque when tightening high-pressure and low-pressure pipe connectors. Excessive tightening will damage threads of connector or O-ring. Connector tightening torque: 1 Low-pressure side 27 - 39 N·m (2.8 - 4.0 kg-m, 20 - 29 ft-lb) 2 High-pressure side 15 - 25 N·m (1.5 - 2.5 kg-m, 11 - 18 ft-lb) The O-ring in low-pressure pipe connector is larger than that in high-pressure connector. Take care to install the proper O-ring.
GI MA EM LC EC FE CL MT
¼
Initially, tighten nut on tie-rod outer socket and knuckle arm to 29 to 39 N·m (3 to 4 kg-m, 22 to 29 ft-lb). Then tighten further to align nut groove with first pin hole so that cotter pin can be installed. CAUTION: Tightening torque must not exceed 49 N·m (5 kg-m, 36 ft-lb). NOTE: Only the dust boot, tie-rod inner socket and tie-rod outer socket can be disassembled on models for Europe.
SST824A
AT AX SU BR
¼
¼ ¼
Before removing lower joint from gear, set gear in neutral (wheels in straight-ahead position). After removing lower joint, put matching mark on pinion shaft and pinion housing to record neutral position. To install, set left and right dust boots to equal deflection. Attach lower joint by aligning matching marks of pinion shaft and pinion housing. Tighten gear housing mounting bracket bolts.
RS BT HA
SST819A
Inspection
Thoroughly clean all parts in cleaning solvent or DEXRONTMIII or equivalent. Blow dry with compressed air, if available.
NLST0024
SC EL IDX
ST-17
POWER STEERING GEAR AND LINKAGE
Inspection (Cont'd)
STEERING GEAR
1. a. b. c. d. e.
SST090B
NLST0024S06
f.
Check rack sliding force on vehicle as follows: Install steering gear onto vehicle, but do not connect tie-rod to knuckle arm. Connect all piping and fill with steering fluid. Start engine and bleed air completely. Disconnect steering column lower joint from the gear. Keep engine at idle and make sure steering fluid has reached normal operating temperature. Pull tie-rod slowly to move it from neutral position to ±11.5 mm (±0.453 in) at speed of 3.5 mm (0.138 in)/s. Check that rack sliding force is within specification. Average rack sliding force: 197 - 255 N (20.1 - 26.0 kg, 44.3 - 57.3 lb)
NLST0024S01
BOOT
¼ ¼
Check condition of boot. If cracked excessively, replace it. Check boots for accumulation of power steering fluid.
TIE-ROD OUTER AND INNER SOCKETS
¼
NLST0024S05
¼
¼
SST468C
¼
Check ball joints for swinging force. Tie-rod outer and inner ball joints swinging force "A": Refer to SDS, ST-27. Check ball joint for rotating torque. Tie-rod outer ball joint rotating torque "B": Refer to SDS, ST-27. Check ball joints for axial end play. Tie-rod outer and inner ball joints axial end play "C": Refer to SDS, ST-27. Check condition of dust cover. If cracked excessively, replace outer tie-rod.
Assembly
NLST0025
SST866C
1. Install lock plate to rack. a. Temporarily install spacer ring to rack. Discard old spacer ring; replace with a new one. b. Install lock plate to inner socket. Discard old lock plate; replace with a new one. c. Apply a coat of locking sealant to inner socket threads. Screw inner socket into rack and tighten to specified torque. d. Clinch lock plate at rack groove location (at two points). e. Install spacer ring to lock plate as shown in the Figure at left.
ST-18
POWER STEERING GEAR AND LINKAGE
Assembly (Cont'd)
Be careful not to damage spacer ring during installation
GI MA EM LC
2. Tighten outer socket lock nut. Tie-rod length "L": Refer to SDS, ST-27.
EC FE CL
SST867C
MT
3. Measure rack stroke. Rack stroke "S": Refer to SDS, ST-27.
AT AX SU BR
SST086BA
4.
Before installing boot, coat the contact surfaces between boot and tie-rod with grease.
RS BT HA
SST967A
5. ¼ ¼
Install boot bands. Securely install boot band to boot groove and clinch the root section of the trapezoidal area. Make sure that there is a clearance of 3.5 mm (0.138 in) or less at the clinched section of the boot band. Refer to the Figure at left.
SC EL IDX
SST868C
ST-19
POWER STEERING GEAR AND LINKAGE
Adjustment
Adjustment
1. a. b. c. d. e.
SST090B
NLST0026
f.
Check rack sliding force on vehicle as follows: Install steering gear onto vehicle, but do not connect tie-rod to knuckle arm. Connect all piping and fill with steering fluid. Start engine and bleed air completely. Disconnect steering column lower joint from the gear. Keep engine at idle and make sure steering fluid has reached normal operating temperature. Pull tie-rod slowly to move it from neutral position to ±11.5 mm (±0.453 in) at speed of 3.5 mm (0.138 in)/s. Check that rack sliding force is within specification. Average rack sliding force: 197 - 255 N (20.1 - 26.0 kg, 44.3 - 57.3 lb)
ST-20
POWER STEERING OIL PUMP (QG ENGINE)
Components
Components
NLST0027
GI MA EM LC EC FE CL MT AT AX SU
NST051
BR
Inspection
NLST0028
Disassemble the power steering oil pump only if the following items are found. ¼ Oil leak from any point shown in the figure ¼ Deformed or damaged pulley ¼ Poor performance
RS BT HA
NST053
SC EL IDX
ST-21
POWER STEERING OIL PUMP (YD ENGINE)
Components
Components
NLST0038
SST882CA
1. 2. 3. 4. 5. 6. 7. 8.
Rear bracket Rear body Dowel pin Side plate seal Cam ring Vane Rotor Side plate
9. 10. 11. 12. 13. 14. 15. 16.
O-ring (Outer) O-ring (Inner) Front body Drive shaft rear oil seal Drive shaft front oil seal Drive shaft Snap ring O-ring
17. 18. 19. 20. 21. 22. 23.
Outlet connector Connector seal Flow control valve Flow control valve spring Inlet connector O-ring Washer
Pre-disassembly Inspection
NLST0039
Disassemble the power steering oil pump only if the following items are found. ¼ Oil leak from any point shown in the figure ¼ Poor performance
SST883C
ST-22
POWER STEERING OIL PUMP (YD ENGINE)
Removal and Installation
Removal and Installation
1. Remove chain case cover.
NLST0040
GI MA EM
SST884C
LC
2. 3. 4. Revolving crank pulley, set tool. Fix tool with chain cover fixing bolts. Using suitable tool, remove sprocket fixing nut and washer. Do not remove Tool while power steering oil pump is removed.
EC FE CL
SST885C
MT
5. Remove power steering pump fixing bolts, then remove it.
AT AX SU BR
SST886C
¼ ¼
Apply Gasket to the installation surface of the engine chain case cover as shown in the figure before installing the chain case cover to the engine. Bleed air after installation. Refer to ST-8.
RS BT HA
SST890C
Disassembly
NLST0041
SC EL IDX
CAUTION: ¼ Parts which can be disassembled are strictly limited. Never disassemble parts other than those specified. ¼ Disassemble in as clean a place as possible. ¼ Clean your hands before disassembly. ¼ Do not use rags; use nylon cloths or paper towels. ¼ Follow the procedure and cautions in the Service Manual. ¼ When disassembling and reassembling, do not let foreign matter enter or contact the parts.
ST-23
POWER STEERING OIL PUMP (YD ENGINE)
Disassembly (Cont'd)
¼ ¼
Remove rear bracket and rear body. Remove side plate seal, cam ring vane, rotor side and plate.
SST887C
¼
Remove inlet connector and outlet connector with spring. Be careful not to drop the flow control valve. Do not disassemble the flow control valve.
SST036A
¼
Remove oil seal
SST888C
¼
Remove snap ring, then draw drive shaft. Be careful not to drop drive shaft.
SST889C
Inspection
¼ ¼ ¼
NLST0042
If pulley is cracked or deformed, replace it. If an oil leak is found around pulley shaft oil seal, replace the seal. If serration on pulley or pulley shaft is deformed or worn, replace it.
ST-24
POWER STEERING OIL PUMP (YD ENGINE)
Assembly
Assembly
NLST0043
Assemble oil pump, noting the following instructions. ¼ Make sure O-rings and oil seal are properly installed. ¼ Always install new O-rings and oil seal. ¼ Be careful of oil seal direction. ¼ Cam ring, rotor and vanes must be replaced as a set if necessary. ¼ Coat each part with DEXRONTMIII or equivalent when assembling.
SST038A
GI MA EM LC
¼
Pay attention to the direction of rotor.
EC FE CL
SST289A
MT
¼ When assembling vanes to rotor, rounded surfaces of vanes must face cam ring side.
AT AX SU BR
SST843A
¼
Insert pin 2 into pin groove 1 of front housing and front side plate. Then install cam ring 3 as shown at left. Cam ring: D1 is less than D2.
RS BT HA SC EL IDX
SST472C
ST-25
SERVICE DATA AND SPECIFICATIONS (SDS)
General Specifications
General Specifications
Applied model Steering model Steering gear type Steering overall gear ratio Turns of steering wheel (Lock to lock) Steering column type Power steering PR25T 18.07 3.26 Collapsible, tilt
NLST0032
Steering Wheel
Steering wheel axial play Steering wheel play mm (in) 0 (0) 35 (1.38) or less ±2 (±0.08) or less mm (in) mm (in)
NLST0033
Movement of gear housing
Steering Column
Steering column length "L" mm (in) 531.8 - 533.8 (20.94 - 21.02)
NLST0034
SST855C
ST-26
SERVICE DATA AND SPECIFICATIONS (SDS)
Steering Gear and Linkage
Steering Gear and Linkage
Steering gear type Swinging force at cotter pin hole: "A" N (kg, lb) Tie-rod outer ball joint Rotating torque: "B" in-lb) Axial end play: "C" Tie-rod inner ball joint Swinging force*: "A" Axial end play: "C" mm (in) N·m (kg-cm, PR25T 6.5 - 64.6 (0.66 - 6.59, 1.5 - 14.6)
NLST0035
GI MA
0.29 - 2.94 (3.0 - 30.0, 2.6 - 26.0) 0.4 (0.016) or less 5.7 - 45.6 (0.58 - 4.65, 1.3 - 10.3) 0.2 (0.008) or less 185 (7.28)
mm (in) N (kg, lb) mm (in)
EM LC EC FE CL MT
SST867C
Tie-rod standard length "L"
*: Measuring point [ : 172 mm (6.77 in)]
AT AX SU BR
Rack stroke "S"
mm (in)
70 (2.76)
SST086BA
RS BT HA
Power Steering
Steering gear type Rack sliding Range within ±11.5 mm (±0.453 in) force N (kg, lb) from the neutral position at rack Average force Under normal operat- speed of 3.5 mm (0.138 in)/s ing oil pressure Steering wheel turning force (Measured at one full turn from the neutral position) Fluid capacity (Approximate) Oil pump maximum pressure (Imp qt) QG kPa (bar, kg/cm2, psi) YD PR25T
NLST0036
197 - 255 (20.1 - 26.0, 44.3 - 57.3)
SC
N (kg, lb) 26 - 32 (2.7 - 3.2, 5.8 - 7.2) 1.0 (7/8) 8,100 - 8,700 (81 - 87, 82.6 - 88.7, 1,175 - 1,262) 8,520 - 9,320 (85.2 - 93.2, 86.9 - 95.1, 1,235 - 1,351)
EL IDX
ST-27
NOTES