torque INFINITI QX56 2004 Factory Service Manual

GI-52
TERMINOLOGY
Revision: August 20072004 QX56
Nonvolatile random access memory NVRAM ***
On board diagnostic system OBD system Self-diagnosis
Open loop OL Open loop
Oxidation catalyst OC Catalyst
Oxidation catalytic converter system OC system ***
Oxygen sensor O2S Exhaust gas sensor
Park position switch *** Park switch
Park/neutral position switch PNP switchPark/neutral switch
Inhibitor switch
Neutral position switch
Periodic trap oxidizer system PTOX system ***
Positive crankcase ventilation PCV Positive crankcase ventilation
Positive crankcase ventilation valve PCV valve PCV valve
Powertrain control module PCM ***
Programmable read only memory PROM ***
Pulsed secondary air injection control sole-
noid valvePAIRC solenoid valve AIV control solenoid valve
Pulsed secondary air injection system PAIR system Air induction valve (AIV) control
Pulsed secondary air injection valve PAIR valve Air induction valve
Random access memory RAM ***
Read only memory ROM ***
Scan tool ST ***
Secondary air injection pump AIR pump ***
Secondary air injection system AIR system ***
Sequential multiport fuel injection system SFI system Sequential fuel injection
Service reminder indicator SRI ***
Simultaneous multiport fuel injection sys-
tem*** Simultaneous fuel injection
Smoke puff limiter system SPL system ***
Supercharger SC ***
Supercharger bypass SCB ***
System readiness test SRT ***
Thermal vacuum valve TVV Thermal vacuum valve
Three way catalyst TWC Catalyst
Three way catalytic converter system TWC system ***
Three way + oxidation catalyst TWC + OC Catalyst
Three way + oxidation catalytic converter
systemTWC + OC system ***
Throttle body TBThrottle chamber
SPI body
Throttle body fuel injection system TBI system Fuel injection control
Throttle position TP Throttle position
Throttle position sensor TPS Throttle sensor
Throttle position switch TP switch Throttle switch
Torque converter clutch solenoid valve TCC solenoid valveLock-up cancel solenoid
Lock-up solenoid NEW TERMNEW ACRONYM /
ABBREVIATIONOLD TERM

GW-74
REAR DOOR GLASS AND REGULATOR
Revision: August 20072004 QX56
Inspection after removal
Check the regulator assembly for the following items. If a malfunction is detected, replace or grease it.

Gear wear

Regulator deformation

Spring damage

Grease condition for each sliding part
Installation
1. Connect the harness connector to the regulator assembly and
install the regulator and guide channel.
2. Install the door glass from outside to ensure that it is in both the
front and rear glass channels. Tighten door glass bolts to the
specified torque.
3. Install the inside seal.
4. Install the rear door finisher. Refer to EI-32, "
Rear Door" .
Fitting Inspection After Installation

Check that the door glass is securely fit into the glass run groove.

Lower the door glass slightly [approximately 10 to 20 mm (0.39 to 0.79 in)], and check that the clearance
to the sash is parallel. If the clearance between the glass and sash is not parallel, loosen the regulator
bolts, guide rail bolts, and glass and carrier plate bolts to correct the glass position.
SIIA0291E
Door glass bolts : 6.1 N·m (0.62 kg-m, 54 in-lb)
SIIA0290E

SIDE WINDOW GLASS
GW-75
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Revision: August 20072004 QX56
SIDE WINDOW GLASSPFP:83300
Removal and InstallationEIS002VJ
REMOVAL
1. Remove the rear upper finisher. Refer to EI-34, "BODY SIDE TRIM" .
2. Disconnect the rear side window motor harness.
3. Remove the rear side window motor bolts.
4. Remove the rear side window front nuts and the glass.
INSTALLATION
1. Install the glass from outside to insure that it is even with the top and bottom of the opening. Tighten rear
side window front nuts to the specified torque.
2. Install rear side window motor bolts. Tighten rear side window latch bolts to the specified torque.
3. Connect the rear side window motor harness.
4. Install rear pillar lower finisher. Refer to EI-34, "
BODY SIDE TRIM" .
1. Rear side window glass 2. Rear side window motor 3. Weatherstrip
4. Inner panel 5. Outer panel
LIIA0965E
Glass nuts : 4.2 N·m (0.43 kg-m, 37 in-lb)
Motor bolts : 5.6 N·m (0.57 kg-m, 49 in-lb)

IDX-6
ALPHABETICAL INDEX
M
MAFS - Wiring diagram ..................... EC-149
, EC-156
Magnet clutch ............................... ATC-104, ATC-167
MAIN - Wiring diagram .................................... EC-128
Main oil pump (Transfer) .................................. TF-122
Mainshaft (Transfer) ........................................ TF-116
Maintenance (engine)Schedule 1 ....................... MA-6
Maintenance (engine)Schedule 2 ....................... MA-8
Major overhaul (Final drive) .............. FFD-14, RFD-13
Major overhaul (Transfer) ................................ TF-110
Malfunction indicator lamp (MIL) ........................ EC-63
Map lamp .......................................................... LT-129
Mass air flow sensor (MAFS) ............. EC-146, EC-154
Meter ..................................................................... DI-5
METER - Wiring diagram .................................... DI-10
MIL data link connectors circuit ....................... EC-631
MIL/DL - Wiring diagram .................................. EC-631
MIRROR - Wiring diagram ................................ GW-99
Misfire .............................................................. EC-243
Mode door control linkage adjustment ............. ATC-65
Mode door motor ............................ ATC-63, ATC-152
Model variation ................................................... GI-46
Multiport fuel injection (MFI) system .................. EC-26
Multiport fuel injection precautions ....................... GI-6
Multi-remote control system ............................... BL-44
N
NATS - Wiring diagram .................................... BL-141
NAVI - Wiring diagram ....................................... AV-79
NAVI Control Unit ............................................ AV-157
Neutral-4LO switch ............................................ TF-96
Nissan torque demand (NTD) control system .... EC-29
NVH troubleshooting (AX) ................................. FAX-4
NVH troubleshooting (EM) .................................. EM-9
NVH troubleshooting (Final drive) ..................... RFD-5
NVH troubleshooting (Propeller shaft) ................. PR-3
NVH troubleshooting (RAX) .............................. RAX-4
NVH troubleshooting (RSU) .............................. RSU-5
NVH troubleshooting (ST) .................................... PS-5
NVH troubleshooting (WT)NVH troubleshooting (WT) .
WT-3
NVIS (Nissan vehicle immobilizer system) precautions
GI-3
O
O2H2B1 - Wiring diagram ................................ EC-140
O2H2B2 - Wiring diagram ................................ EC-142
O2S2B1 - Wiring diagram .. EC-188, EC-199, EC-386,
EC-398
O2S2B2 - Wiring diagram .. EC-190, EC-201, EC-388,
EC-400
Oil cooler (engine) ............................................. LU-11
Oil filter ............................................................... LU-10
Oil filter (Transfer) ............................................ TF-107
Oil pan (engine) ................................................ EM-22
Oil pressure (engine) ........................................... LU-7
Oil pressure relief valve (engine) ......................... LU-5
Oil pump (engine) .............................................. LU-13
Oil seal replacement (engine) ........................... EM-56
Oil seal replacement (front of final drive) FFD-8, RFD-6
Oil seal replacement (side of final drive) FFD-10, RFD-
8
On board diagnostic system ............................. EC-49
ORVR (On-board Refueling Vapor Recovery) EC-640
Overheat ......................................................... EC-410
P
P/SCKT - Wiring diagram ................................. WW-54
Pantograph jack .................................................. GI-40
Park/Neutral position switch ............................ EC-546
Park/neutral position switch (A/T) .................... AT-109
Parking brake control ........................................... PB-4
Parking lamp .................................................... LT-108
PCV (positive crankcase ventilation) .............. EC-645
Periodic maintenance ......................................... MA-6
Personal lamp .................................................. LT-129
PGC/V - Wiring diagram ................... EC-287, EC-498
PHASE - Wiring diagram ................................ EC-261
Pinion bearing preload diff. ............................. RFD-21
Piston pin inspection ......................................... EM-89
Piston ring inspection ........................................ EM-90
Piston to bore clearance ................................... EM-94
Planetary carrier (Transfer) .............................. TF-127
PNP/SW - Wiring diagram .............................. EC-548
POS - Wiring diagram ..................................... EC-256
POWER - Wiring diagram ................................... PG-6
Power seat ......................................................... SE-88
Power steering fluid level .................................. MA-29
Power steering gear ........................................... PS-15
Power steering oil pump .................................... PS-26
Power steering pressure (PSP) sensor ........... EC-346
Power steering system bleeding .......................... PS-6
Power supply routing .......................................... PG-4
Power window .................................................. GW-15
PRE/SE - Wiring diagram ................. EC-304, EC-310
Precautions (General) ........................................... GI-4
Precautions in repairing high strength steel ..... BL-192
Pressure switch 1 ............................... AT-154, AT-175
Pressure switch 2 ............................................. AT-172
Pressure switch 3 ............................... AT-148, AT-178
Pressure switch 5 ............................... AT-160, AT-181
Pressure switch 6 ............................... AT-166, AT-184
Pressure test (A/T) ............................................. AT-59
Propeller shaft ........................................... PR-4, PR-8
Propeller shaft inspection .................................. MA-24
Propeller shaft on vehicle service ....................... PR-8
Propeller shaft vibration ............................ PR-4, PR-8
PS/SEN - Wiring diagram ............................... EC-347
R
R/VIEW - Wiring diagram .................................... DI-75
Radiator ............................................................ CO-10
Rear Audio Remote Control Unit ....................... AV-47

IDX-7
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ALPHABETICAL INDEX
Rear axle ........................................................... RAX-5
Rear bumper ....................................................... EI-15
Rear case (Transfer) ........................................ TF-112
Rear combination lamp removal and installation ... LT-
122
Rear cover packing replacement diff. .............. RFD-23
Rear door ........................................... BL-129, GW-72
Rear seat ......................................................... SE-103
Rear seat belt ...................................................... SB-6
Rear suspension ............................................. RSU-25
Rear view monitor ............................................... DI-72
Rear washer .................................................... WW-33
Rear window defogger ..................................... GW-78
Rear wiper ....................................................... WW-33
Refrigerant connection precaution .................... ATC-7
Refrigerant discharging evacuating charging ATC-162
Refrigerant general precaution .......................... ATC-6
Refrigerant lines ........... ATC-162, ATC-170, ATC-171
Refrigerant pressure sensor ............ EC-607, ATC-173
Relay box .......................................................... PG-78
Remote keyless entry system ............................ BL-44
Removal and installation (A/T) ........... AT-255, AT-258
Removal and installation (Transfer) ................. TF-109
Revolution sensor (A/T) ................................... AT-112
Ring gear diff. inspection ................................. RFD-12
Road wheel size ................................................. GI-49
Rocker cover ..................................................... EM-33
Room lamp ....................................................... LT-129
Room lamp - See Interior lamp ........................ LT-129
ROOM/L - Wiring diagram ................................ LT-135
RP/SEN - Wiring diagram ............................... EC-608
S
SEAT - Wiring diagram ..................................... SE-88
Seat belt inspection ............................... SB-10, MA-31
Seat belt pre-tensioner .................................... SRS-57
Seat belt, front ..................................................... SB-3
Seat belt, rear ...................................................... SB-6
Seat, front .......................................................... SE-96
Seat, rear ........................................................ SE-103
Self-diagnosis (Transfer) .................................... TF-27
SEN/PW - Wiring diagram ............................... EC-425
SHIFT - Wiring diagram ................................... AT-237
Shift lock system .............................................. AT-236
Shock absorber (front) .................................... FSU-10
Shock absorber (rear) ..................................... RSU-34
Side air bag (satellite) sensor .......................... SRS-56
Side bearing preload diff. ................................ RFD-18
Side curtain air bag ......................................... SRS-53
Side trim .............................................................. EI-34
SMJ (super multiple junction) ............................ PG-74
SONAR - Wiring diagram .................................... DI-62
Spare tire size .................................................... GI-49
Spark plug ......................................................... EM-27
Spark plug replacement .................................... MA-17
Specification value .......................................... EC-123
Speedometer ......................................................... DI-5
Spiral cable ..................................................... SRS-47
SROOF - Wiring diagram .................................. RF-13
SRS - See Supplemental Restraint System ...... SRS-5
SRS - Wiring diagram ...................................... SRS-12
SRS Trouble diagnoses ..................................... SRS-8
Stabilizer bar (front) ......................................... FSU-12
Stabilizer bar (rear) ......................................... RSU-41
Stall test (A/T) .................................................... AT-58
Standardized relay ............................................. PG-72
START - Wiring diagram ................................... SC-11
Starting system .................................................. SC-10
Steering gear, linkage and transfer gear inspection .....
MA-28
Steering linkage ................................................. PS-15
Steering wheel and column ................................. PS-7
Step lamp ......................................................... LT-129
Stop lamp ......................................................... LT-103
Stop lamp switch ............................... EC-551, EC-621
STOP/L - Wiring diagram ................................. LT-104
Strut (front) ...................................................... FSU-10
Sun gear (Transfer) .......................................... TF-127
Sun roof, electric ................................................ RF-10
Sunload sensor .............................................. ATC-131
Sunroof .............................................................. RF-24
Supplemental Restraint System ........................ SRS-5
Supplemental restraint system - Wiring diagram . SRS-
12
Symbols and abbreviations ..................... GI-10, GI-22
Symptom matrix chart ........................................ EC-84
System readiness test (SRT) code .................... EC-55
T
T/TOW - Wiring diagram ................................... LT-126
Tachometer .......................................................... DI-5
Tail lamp ........................................................... LT-108
TAIL/L - Wiring diagram .................................... LT-111
TCM circuit diagram .......................................... AT-51
TCM inspection table ......................................... AT-90
TCS - Wiring diagram ..................................... BRC-16
TCS (traction control system) ........................... BRC-7
TCS component parts and connector location BRC-14
TCS wheel sensors ........................................ BRC-14
Thermometer ...................................................... DI-26
Three way catalyst ............................................. EM-19
Three way catalyst function (Bank 1) .............. EC-267
Three way catalyst function (Bank 2) .............. EC-267
Three way catalyst precautions ............................ GI-5
Throttle control motor ...................................... EC-378
Throttle control motor relay .............................. EC-373
Throttle position sensor (TPS) ... EC-171, EC-236, EC-
420, EC-422, EC-569
Throttle valve closed position learning .............. EC-44
Tie-rod ............................................................... PS-15
Timing chain ...................................................... EM-35
Tire rotation ....................................................... MA-27
Tire size .............................................................. GI-49
Tooth contact diff. ............................................ RFD-19
Torque converter installation AT-256, AT-257, AT-259,
AT-260

IDX-8
ALPHABETICAL INDEX
Torque convertor clutch solenoid valve ... AT-118, AT-
121
Tow truck towing ................................................. GI-42
Towing point ....................................................... GI-43
TPS1 - Wiring diagram .................................... EC-238
TPS2 - Wiring diagram .................................... EC-173
TPS3 - Wiring diagram .................................... EC-571
Traction control system - Wiring diagram ....... BRC-16
Transfer control device .................................... TF-104
Transfer control unit inspection table ................. TF-55
Transfer dropping resistor .................................. TF-96
Transfer fluid temperature sensor ...................... TF-95
Transfer motor ................................................. TF-106
Transfer motor relay .......................................... TF-97
Transfer oil replacement ................................... MA-24
Transfer serial number ........................................ GI-48
Transmission serial number ................................ GI-48
Tread-FR&RR (Dimensions) ............................... GI-49
Trim ..................................................................... EI-34
TRNSCV - Wiring diagram ............................... BL-157
Trouble diagnoses .............................................. GI-11
Turbine revolution sensor ................................ AT-134
TURN - Wiring diagram ...................................... LT-83
Turn signal lamp ................................................. LT-80
Two trip detection logic ...................................... EC-49
Two-pole lift ........................................................ GI-41
V
Vacuum hose (brake system) ............................ BR-20
Vacuum hose drawing (Engine control) ............. EC-24
Valve clearance ................................................ EM-52
Valve guide ....................................................... EM-66
Vanity mirror lamp ............................................. LT-129
VDC (vehicle dynamics control) ........................ BRC-7
VDC -Wiring diagram ...................................... BRC-16
Vehicle identification number .............................. GI-47
Vehicle recovery (freeing a stuck vehicle) .......... GI-43
Vehicle speed sensor (VSS) ............................ EC-340
VEHSEC - Wiring diagram ................................. BL-80
VENT/V - Wiring diagram .................. EC-294, EC-506
Video Monitor ..................................................... AV-60
Viscosity number (SAE) .................................... MA-11
W
W/ANT - Wiring diagram .................................... AV-49
Wait detection switch ......................................... TF-96
WARN - Wiring diagram ..................................... DI-32
Warning chime .................................................... DI-43
Warning lamps .................................................... DI-31
Washer, front ..................................................... WW-4
Washer, rear .................................................... WW-33
Water pump ...................................................... CO-15
Water temperature gauge ..................................... DI-5
Wheel alignment (front) ..................................... FSU-6
Wheel alignment (rear) ................................... RSU-27
Wheel balance .................................................. MA-25
Wheel bearing (front) ......................................... FAX-5
Wheel bearing (rear) ......................................... RAX-5
Wheel hub (rear) ............................................... RAX-5
Wheel size .......................................................... GI-49
Wheelbase (Dimensions) .................................... GI-49
Width (Dimensions) ............................................. GI-49
WINDOW - Wiring diagram .............................. GW-22
Window, door ...................................... GW-69, GW-72
Windshield ....................................................... GW-11
WIP/R - Wiring diagram ................................... WW-37
WIPER - Wiring diagram .................................... WW-9
Wiper, front ........................................................ WW-4
Wiper, rear ....................................................... WW-33
Wiring Diagram (Cell code) list ......................... PG-61
Wiring diagram (Transfer) .................................. TF-18
Wiring diagrams .................................................. GI-15
WT-T/WARN - Wiring diagram .......................... WT-10

LU-8Revision: August 2007
ENGINE OIL
2004 QX56
5. Install Tools.
6. Start the engine and warm it up to normal operating temperature.
7. Check the engine oil pressure with engine running under no-load.
Engine oil pressure [Engine oil temperature at 80°C (175°F)]
Unit: kPa (kg/cm2
, psi)
CAUTION:
If the difference is extreme, check the oil passages and oil pump for leaks and blockages.
8. After the inspections, install the oil pressure sensor as follows:
a. Remove the old liquid gasket adhering to oil pressure sensor and engine.
b. Apply liquid gasket and tighten oil pressure sensor to the specification.
Use Genuine RTV Silicone Sealant or equivalent. Refer to GI-45, "
Recommended Chemical Prod-
ucts and Sealants" .
c. After warming up engine, make sure there is no leakage of engine oil with engine running.
Changing Engine OilEBS00I4K
WAR NIN G:

Be careful not to burn yourself, as the engine oil is hot.

Prolonged and repeated contact with used engine oil may
cause skin cancer; try to avoid direct skin contact with
used engine oil. If skin contact is made, wash thoroughly
with soap or hand cleaner as soon as possible.
1. Remove engine front undercover using power tool.
2. Warm up engine, and check for oil leakage from engine compo-
nents. Refer to LU-7, "
OIL LEAKAGE" .
3. Stop engine and wait for 10 minutes.
4. Loosen oil filler cap, then remove drain plug.
5. Drain engine oil.
6. Install drain plug with new washer.
CAUTION:

Be sure to clean drain plug and install with new washer.
7. Refill with new engine oil. Refer to MA-10, "
Fluids and Lubricants" . Tool number : ST25051001 (J-25695-1)
: ST25052000 (J-25695-2)
WBIA0571E
Engine Speed Approximate Discharge Pressure
Idle speed More than 98 (1.0, 14)
2,000 rpm More than 294 (3.0, 43)
Oil pressure sensor torque : 14.7 N·m (1.5 kg-m, 11 ft-lb)
Oil pan drain plug : 34.3 N·m (3.5 kg-m, 25 ft-lb)
KBIA2498E

MA-24
CHASSIS AND BODY MAINTENANCE
Revision: August 20072004 QX56
Checking Transfer FluidELS0010I
FLUID LEAKAGE AND FLUID LEVEL
1. Make sure that fluid is not leaking from the transfer assembly or around it.
2. Check fluid level from the filler plug hole as shown.
CAUTION:
Do not start engine while checking fluid level.
3. Install the filler plug with a new gasket to the transfer. Tighten to
the specified torque. Refer to TF-110, "
OVERHAUL" .
CAUTION:
Do not reuse gasket.
Changing Transfer FluidELS0010J
DRAINING
1. Stop engine.
2. Remove the drain plug and gasket and drain the fluid.
3. Install the drain plug with a new gasket to the transfer. Tighten to
the specified torque. Refer to TF-110, "
OVERHAUL" .
CAUTION:
Do not reuse gasket.
FILLING
1. Remove the filler plug and gasket.
2. Fill the transfer with new fluid until the fluid level reaches the
specified limit near the filler plug hole.
CAUTION:
Carefully fill fluid. Fill up for approximately 3 minutes.
3. Leave the vehicle for 3 minutes, and check fluid level again.
4. Install the filler plug with a new gasket to the transfer. Tighten to the specified torque. Refer to TF-110,
"OVERHAUL" .
CAUTION:
Do not reuse gasket.
Checking Propeller ShaftELS0010L
Check the front and rear propeller shafts for damage, dents, and cracks. Check the joints for looseness and
any damage. Repair or replace as necessary.
Checking Final Drive OilELS0010M
CAUTION:
If using the vehicle for towing, the rear final drive oil must be replaced as specified. Refer to MA-6,
"Schedule 1" .
NOTE:
Rear final drive shown, front final drive similar.
SM A43 9B
SM A44 4B
Fluid grade:
Refer to MA-10, "
Fluids and Lubricants" .
Fluid capacity:
Refer to MA-10, "
Fluids and Lubricants" .
WDIA0211E

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
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Revision: August 20072004 QX56
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEDS002JY
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
PR-4
(front)
PR-8 (rear)
PR-4 (front)
PR-8 (rear)
PR-4 (front)
PR-8 (rear)
FFD-7, "
NVH Troubleshooting Chart
" (front)
RFD-5, "
NVH Troubleshooting Chart
" (rear)
FA X-4, "
NVH Troubleshooting Chart
" (front)
RAX-4, "
NVH Troubleshooting Chart
" (rear)
FSU-4, "
NVH Troubleshooting Chart
" (front)
RSU-5, "
NVH Troubleshooting Chart
" (rear)
WT-3, "
NVH Troubleshooting Chart
"
WT-3, "
NVH Troubleshooting Chart
"
FA X-4, "
NVH Troubleshooting Chart
" (front)
RAX-4, "
NVH Troubleshooting Chart
" (rear)
BR-5, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
Possible cause and suspected parts
Uneven rotation torque
Rotation imbalance
Excessive run out
Differential
Axle
Suspension
Tire s
Road wheel
Drive shaft
Brakes
Steering
SymptomNoise×××××××××××
Shake×××××××
Vibration××× ××× × ×

PREPARATION
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Revision: August 20072004 QX56
PREPARATIONPFP:00002
Special Service Tools (SST)EGS000MK
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool nameDescription
ST3127 S000
(See J-25765-A)
Preload gauge
1. GG9103000
(J25765-A)
Torque wrench
2. HT62940000
( — )
Socket adapter
3. HT62900000
( — )
Socket adapterInspecting of pinion rotating torque and rota-
tional torque for ball joint
HT72520000
(J-25730-A)
Ball joint removerRemoving steering outer socket
—
(J-46213)
Rear cover wrenchRemoving rear cover
a: 21.6 mm (0.850 in)
b: 34.9 mm (1.374 in)
KV48104400
( — )
Teflon ring correcting toolInstalling of rack Teflon ring
a: 50 mm (1.97 in) dia.
b: 36 mm (1.42 in) dia.
c: 100 mm (3.94 in)
KV48103400
( — )
Torque adapterInspecting rotational torque
S-NT541
NT146
SGIA0516E
S-NT550
ZZA0824D