torque NISSAN GT-R 1998 User Guide

TCSlABS SYSTEM
Precautions for Trouble
Diagnosis
After performing trouble diagnosis, be sure to erase trouble stored in memory.
Refer to "CONSULT for
TCS/ABS Control Unit Control System"
(BR-27), "Self-diagnosis for TCSIABS
Control Unit Control System"
(BR-34), "CONSULT for Throttle Control Unit Control System" (BR-37) or
"Self-diagnosis for Throttle Control Unit Control System"
(BR-41).
The concerns that are difficult to duplicate may be caused by faulty electrical connections. Move harnesses
or harness connectors by hand to check if there is any poor mating of connector halves or faulty connec-
tion. Do not force to open a connector terminal when using a circuit tester for inspection.
Read GI section thoroughly in advance and make sure of all the general precautions.
Basic Inspection
BASIC INSPECTION 1 - Brake fluid level and leakage
1. Check brake fluid level in reservoir tank. Replenish brake fluid if necessary.
2. Check for leakage at or around brake piping and ABS actuator. If leakage or seepage is noted, proceed
as follows:
If ABS actuator connectors are loose, tighten to specified torque. Recheck to ensure that leakage is no
longer present.
If flare nut threads at piping connectors or actuator threads are damaged, replace faulty parts with new
ones. Recheck to ensure that leakage is no longer present.
If brake fluid leaks through areas other than actuator connectors, wipe off using a clean cloth. Recheck
for leakage or seepage. If necessary, replace faulty parts with new ones.
If brake fluid leaks at or seeps through ABS actuator, wipe off using a clean cloth.
Recheck for leakage or seepage. If necessary, replace ABS actuator with new one.
CAUTION:
ABS actuator cannot be disassembled. Do not attempt to disassemble it.
3. Check brake disc rotors and pads for proper operation.
BASIC INSPECTION 2 - Loose power line terminal
Check battery terminals (positive and negative) and battery mounting (ground) for looseness. If necessary,
tighten to specified torque. Check the battery for lower voltage.
BASIC INSPECTION 3 - SLlP indicator lamp, TCS OFF indicator lamp and ABS warning
lamp
Turn ignition switch "ON" to ensure that TCS OFF indicator lamp lights up. If TCS OFF indicator lamp does
not light, check TCS OFF indicator lamp circuit.
Turn ignition switch
"ON" to ensure that SLlP indicator lamp lights
up. If SLlP indicator lamp does not light,
check SLlP indicator lamp circuit.
Turn ignition switch "ON" to ensure that ABS warning lamp lights up. If ABS warning lamp does not light,
check ABS warning lamp circuit.
Check that the SLlP indicator lamp and the ABS warning lamp go off approx.
1 second after the engine
has started. If either of the lamps still remains on, perform the self-diagnosis for TCSIABS control unit
control system and the self-diagnosis for throttle control unit control system.
After driving vehicle at approx. 30
km/h
for approx.
1 minute, check to ensure that the SLlP indicator lamp
and the ABS warning lamp are off. If either of the lamps still remains on, perform the self-diagnosis for
TCS/ABS
control unit control system and the self-diagnosis for throttle control unit control system.
Check that the TCS OFF indicator lamp turns ON and OFF when the TCS OFF switch is turned to
ON
and OFF respectively, with the engine running. If the lamp status does not correspond to the switch
position, check the TCS OFF switch circuit.
Check that the TCS OFF indicator lamp goes off when the engine has started with the TCS OFF switch
OFF. If the TCS
OFF indicator lamp does not go off even 10 seconds after the engine has started, per-
form the self-diagnosis for TCSIABS control unit control system and the self-diagnosis for throttle control
unit control system.
After driving vehicle at approx.
30 kmlh for approx. 1 minute with the TCS OFF switch OFF, check to ensure
that the TCS OFF indicator lamp is off. If the TCS OFF indicator lamp lights up, perform the
self-diagno-
sis for
TCS/ABS
control unit control system and the self-diagnosis for throttle control unit control system.
After performing self-diagnosis procedures, be sure to erase trouble stored in memory.

ENGINE MECHANICAL [ RB20DE (UB) 1
TIGHTENING TORQUE
Unit: N.m (kg-m)
Engine cover
Throttle body
Throttle position sensor
IAA unit (ACC valve)
lntake manifold collector
(upper)
Intake manifold collector
Intake manifold
Vacuum tank
Engine coolant temperature
sensor
- --
' Fuel tube
Pressure regulator
Fuel damper
Fuel hose clamp bolt
(in engine compartment)
Exhaust manifold cover
' Exhaust manifold
Oxygen sensor
Crank pulley
Cam pulley (INT)
Cam pulley
(EXH)
Timing belt cover
Timing belt rear cover
Tensioner pulley
Idler pulley
Crankshaft position sensor
' Oil pan
Oil strainer
Oil pan drain plug
ignition coil
Spark plug
* Rocker cover
Camshaft bracket
Camshaft baffle plate 5.1
- 6.5 (0.52 - 0.66)
20
- 29 (2.0 - 3.0)
1) 5.5 - 7.5 (0.56 - 0.76)
?) 5.5 - 7.5 (0.56 - 0.76)
:Tighten separately in twice.)
Cylinder head bolt
Cylinder head sub bolt
VTC solenoid
' Main bearing cap
Connecting rod nut
Flywheel and drive plate
Engine coolant drain plug
Knock sensor
Radiator mounting bracket
Auxiliary electric fan
Water pump (M6 bolt)
(M8 bolt)
(MI 0 bolt)
Water inlet
Oil pump assembly
Accelerator cable
lock nut
Fuel tank strap
Fuel sender unit lock
ring
Exhaust manifold to front
tube Front tube to catalytic
converter Catalytic converter to cent
tube Center tube to main
muffler
Alternator (main)
(stay side)
Starter motor Unit:
N-m (kg-m)
1)
29 (3.0)
2) 98 (10.0)
3)
0
(0)
4) 25
- 34 (2.5 - 3.5) GI
5) 95" - 100"
(Angle tightening)
Ec
9.0 - 12 (0.92 - 1.2)
25
- 34 (2.5 - 3.5)
49
- 59 (5.0 - 6.0) h$7'
1) 14 - 16 (1.4 - 1.6)
2) 45"
- 50"
(Angle tightening)
BW
93 - 103 (9.5 - 10.5)
34 - 44 (3.5 - 4.5)
25
- 34 (2.5 - 3.5) ST
': Tighten as specified tightening order.
1): Tighten separately in several times.

ENGINE MECHANICAL
TIGHTENING TORQUE
Engine cover
' Throttle body
Throttle position sensor
IAA unit (ACC valve)
' Intake manifold collector
(upper)
' Intake manifold collector
Intake manifold
Vacuum tank
Engine coolant temperature
sensor
' Fuel tube
Pressure regulator
Fuel damper
Fuel hose clamp bolt
(in engine compartment)
Exhaust manifold cover
Exhaust manifold
Oxygen sensor
Crank pulley
Cam pulley (INT)
Cam pulley
(EXH)
Timing belt cover
Ttming belt rear cover
Tensioner pulley
Idler pulley
Crankshaft position sensor
' Oil pan
Oil strainer
Oil pan drain plug
Ignition coil
Spark plug
Rocker cover
* Camshaft bracket
Camshaft baffle plate Unit:
Nm (kg-m)
5.0
- 6.5 (0.51 - 0.66)
1) 8.8
- 11 (0.9 - 1.1)
2) 18
- 22 (1.8 - 2.2)
2.0
- 2.4 (0.20 - 0.24)
8.4
- 11 (0.86 - 1 .I)
18
- 22 (1.8 - 2.2)
5.1
- 6.5 (0.52 - 0.66)
20
- 29 (2.0 - 3.0)
1) 5.5 - 7.5 (0.56 - 0.76)
2) 5.5 - 7.5 (0.56 - 0.76)
:Tighten separately in twice.)
Cylinder head bolt
Cylinder head sub bolt
VTC solenoid
Main bearing cap
Connecting rod nut
Flywheel and drive plate
Engine coolant drain plug
Knock sensor
Radiator mounting bracket
Auxiliary electric fan
Water pump
(M6 bolt)
(M8 bolt)
(M 1 0 bolt)
Water inlet
Oil pump assembly
-
Accelerator cable lock nut
Fuel tank strap
Fuel sender unit lock
ring
Exhaust manifold to front
tube
Front tube to catalytic
converter
Catalytic converter to center
tube Center tube to main
muffler
Alternator (main)
(stay side)
Starter motor Unit:
N.m (kg-m)
1) 29 (3.0)
2) 98 (10.0) 3) 0 (0)
@
4)
25 - 34 (2.5 - 3.5)
5) 95" - 100"
(Angle tightening)
E
9.0 - 12 (0.92 - 1.2)
25
- 34 (2.5 - 3.5) j$? 49 - 59 (5.0 - 6.0)
1) 14- 16
(1.4- 1.6)
2) 60"
- 65" BR
(Angle tightening)
93
- 103 (9.5 - 10.5)
34 - 44 (3.5 - 4.5)
25
- 34 (2.5 - 3.5) a=
': Tighten as specified tightening order.
1): Tighten separately in several times.

ENGINE MECHANICAL pEZBq
TIGHTENING TORQUE
Engine cover
' Throttle body
Throttle position sensor
IAA unit
(ACC valve)
' Intake manifold collector
* Intake manifold
Engine coolant temperature
sensor
' Fuel tube
Pressure regulator
Fuel damper
Fuel hose clamp bolt
(in engine compartment)
Turbocharger Oil tube
Water tube (block side)
(turbocharger side)
Oxygen sensor
Exhaust manifold cover
' Exhaust manifold
Crank pulley
Cam pulley (INT)
Cam pulley
(EXH)
Timing belt cover
Timing belt rear cover
Tensioner pulley
Idler pulley
Crankshaft position sensor
' Oil pan
Oil strainer
Oil pan drain plug
Ignition coil
Spark plug
' Rocker cover
' Camshaft bracket
Camshaft baffle plate Unit:
N.m (kg-m)
5.0
- 6.5 (0.51 - 0.66)
1)
8.8
- 11 (0.9 - 1.1)
2)
18
- 22 (1 -8 - 2.2)
2.0
- 2.4 (0.20 - 0.24)
8.4
- 11 (0.86 - 1.1)
18
- 22 (1.8 - 2.2)
18
- 22 (1 -8 - 2.2)
20
- 29 (2.0 - 3.0)
5.1
- 6.5 (0.52 - 0.66)
20
- 29 (2.0 - 3.0)
1) 5.5
- 7.5 (0.56 - 0.76)
2) 5.5 - 7.5 (0.56 - 0.76)
(Tighten separately in twice.)
' Cylinder head boit
Cylinder head sub bolt
VTC solenoid
" Main bearing cap
Connecting rod
nut
Oil jet
Flywheel and drive plate
Engine coolant drain plug
Knock sensor
Radiator mounting bracket
Auxiliary electric fan
Water pump (M6 bolt)
(M8 bolt)
(MI
0 bolt)
Water inlet
Oil pump assembly
Accelerator cable lock nut
Fuel tank strap
Fuel sender unit lock
ring
Exhaust manifold to front
tube
Front tube to catalytic
converter
Catalytic converter to center
tube
Center tube to main
muffler
Alternator (main)
(stay side)
Starter motor Unit:
N.m (kg-m)
1) 29 (3.0)
2) 98 (10.0)
3) 0 (0)
4) 25 - 34 (2.5 - 3.5)
5) 95"
- 100"
(Angle tightening)
I%
9.0 - 12 (0.92 - 1.2)
25
- 34 (2.5 - 3.5)
49
- 59 (5.0 - 6.0) AT
1) 14 - 16 (1.4 - 1.6)
2) 60" - 65"
(Angle tightening) BR
30 - 40 (3.1 - 4.1)
93
- 103 (9.5 - 10.5)
34 - 44 (3.5 - 4.5) ST
25 - 34 (2.5 - 3.5)
3.8
- 4.5 (0.39 - 0.46) I%$
5.1 - 6.5 (0.52 - 0.66)
17
- 21 (1.7 - 2.1)
20
- 23 (2.0 - 2.3) kIA
35 - 47 (3.6 - 4.8)
16
- 21 (1.6 - 2.1)
9.0
- 12 (0.92 - 1.2) a=
': Tighten as specified tightening order.
1): Tighten separately in several times.

CLUTCH
CLUTCH DISC
CLUTCH PEDAL
Engine type I RB20DE I RB25DE I RB25DET
Engine
type
CLUTCH COVER
RB20DE RB25DE
Size mm
Wear
limit (depth to rivet head) mm
Runout limit / diameter at measurement mm
Maximum backlash
at spline mm
Pedal
height mm
Pedal height at clutch released mm
Pedal free play (clevis pin clearance) mm
RB25DET
225 dia. I 240 dia. I 250 dia.
0.3
Engine type
Size mm
TIGHTENING TORQUE
Unit: N-m (ka-m)
172 - 182
Less than 0.7
/ 21 5 dia.
0.9
Diaphragm spring lever height mm
Variation in diaphragm spring lever height mm
Clutch cover fixing bolt More
than 82
RB20DE
225 dia.
Clutch master cylinder fixing bolt
I 7.9 - 10 (0.8 - 1 .I)
Less
than 1.0
/ 230 dia.
33.0
- 35.0
Less than 0.7
9 - 16 (1.0 - 3.0)
More
than 81
Less than 0.7
/ 240 dia.
RB25DE
240 dia. More
than 85
1
.O
RB25DET
250 dia.
37.5
- 39.5
Less than 0.5 48.2
- 50.2
Less than 0.6

MANUAL TRANSMISSION
BACKLASH ADJUSTING SHIMS
Measurement height
mm
--
Items
Main drive gear
1st gear
2nd gear
3rd gear Thickness
mm Standard mm
0.05 - 0.10
0.05
- 0.20
0.05
- 0.20
0.05
- 0.20
Selective parts Parts number
Counter shaft
front bearing
4th gear I -
5th gear 1 0.05 - 0.20 Ail
BAULK RlNG CLEARANCE Reverse idler gear 1 0.05 - 0.20
END PLAY Measurement
position
2nd and 3rd
Inner baulk ring clearance 'an
1 st gear 1 0.31 - 0.41
Items
2nd gear
1 0.11-0.21
Standard
mm
3rd gear 1 0.11 - 0.21
Outer
baulk ring
lnn'er baulk ring
7 4th gear 5th gear
Reverse idler gear
Counter gear Main drive gear end play
Mainshaft high-synchro side
Rear end of mainshaft end bearing
SNAP RlNG
- -
0.24 - 0.41
0.05
- 0.50
0
- 0.16
0
- 0.13
0 - 0.18
0
- 0.14
4th and 5th ( 1.20 - 1.60 1 Less than 0.8
Selective parts
Thickness
mm I Parts number - -- Reverse gear 1 1.10 - 1.55 1 Less than 0.7
Main drive gear
TIGHTENING TORQUE
Unit: N.m (kg-rn)
Counter drive gear
I
TIM side to 40 - 49
Transmission to engine mounting bolt Engine side to 30
- 39
TIM side (3.0 - 4.0) I High-synchro side 32263 V5200 1 32263
"5201
Rear end of shaft I I
Mainshaft 1.1
32228 20 1 00

MANUAL TRANSMISSION pmtq
THRUST WASHER BAULK RING CLEARANCE
Selective parts I Thickness mm I Parts number
Counter gear
(front)
Reverse idler Measurement
position
,
Ist, 2nd and 3rd (double cone)
lnner baulk ring clearance "a*
Outer baulk ring clearance
"bn
3221
8
01
GOO
32218
01G11
3221
8
01G12
32218
01G13
32218
01G14
32218
01G04
32218
01G15
32218
01G16
3221
8 01 GI7
32284
01G10
3228401G11
Outer baulk ring L,
Syncf
cone
4th and 5th
lnner baulk ring
MTA0004D
Reverse gear
Reverse baulk ring
clearance
"cn
Reverse cone
Standard mm Wear
limit
mm
Less than
0.2
Less than
0.2
EC
Less than &$ 0.7
Less than
0.7
--
TIGHTENING TORQUE
Unit: N.m (kg-m)
1 TIM side to 1 40 - 49
Transmission to engine
mounting bolt Engine side to
30 - 39
I T/M side 1 (3.0 - 4.0)

CONTROL VALVE SPECIFICATIONS
Val ve loc
Upper body
Lower body :ation
L1
L2
L3
L4
L5
L6
CONTROL VALVE SPRING SPECIFICATIONS
L7
L8
L9
L10
L11
L13
L14
L15
L16
Unit: mm I 1 I I I I
Valve designation
Torque converter regulator valve
Pressure modifier valve
Pressure regulator valve
Overrun clutch control valve
Lower body Total
length mm
27.5
43.5
68.0
55.5
19.5
56.0
75.0
Accumulator control valve Parts
number
31780 41x01
31751 41x02
31741 80x00
3 1 772
4AXOO
3 1 772
4AX02
31 675 41 X07
31766
- 4AXOO
31766 51x03
4AX03
model
Except
4AX03 model
4AX03 model
Except
4AX03 model
Valve
spring location Throttle accumulator piston
Shift valve
B
Shift valve A
Upper body
Overrun clutch reducing
63.5
65.0
Overrun clutch reducing valve
Pilot valve
Torque converter clutch control valve
L1
L2 L3
L4
L5
L6
L7
Valve spring designation
Torque converter regulator valve spring
Pressure modifier valve spring
Pressure regulator valve spring
Throttle accumulator piston spring
A
Shift valve B spring
Shift valve
A spring
31 766 51 X04
31766 4AX02
54.5
38.5 58.0
57.0
67.0
37.5
37.5
41
.O
66.0 38.5
Shuttle shift valve S
Free length
36.0
31.95
31.8
30.5
23.5 25.0
23.6
38.3
Overrun clutch control valve
spring
4AX03 model
Pilot valve spring
r
Torque converter clutch control valve spring
31 772 41 X06
31772 41x01
31 832
4AX01
31766 51x05
31766 4AX01
31772 41x12
31772 4AX01
31772 71x00
31 772 41 X03
31772
21x00
4AX03
model
Except
4AX03 model
4AX03 model
Except
4AX03 model
/ L~ / valve spring
26.5
46.5
54.0
25.0
22.6
25.4
23.0
23.0
33.89
I
I I
Shuttle shift valve S spring
1 reducing valve spring Outer
diameter
'D"
9.0
6.8
15.0
9.8
11.0
7.0
7.0
8.0
Except 4AX03 model
32.5
4AX03
model
Except
4AX03 model
4AX00 model
Except
4AX00 model
1 reducing valve
9.0
6.5
5.65
7.0
6.7
6.75
6.7
6.7
6.95
3-2
timing
valve spring
Servo charger valve spring
Lock-up regulator valve spring
3-2 timing valve
Wire
diameter
"d"
1.4
0.8 1.3
1.3
0.8
0.65
0.6
0.55
35.5 7.0
4AX03
model
Except
4AX03 model
1.1
0.8
0.75
0.65 0.7
0.75
0.7
0.7
0.55
Servo charger valve
Lock-up regulator valve
Winding
direction Right
4
1
7
t
?
T
T
7.0 0.85
T
?
T
T
?
T
T
T
.. I
Parts
number
31742
4AXOO
3 1 742
41x19
31742
4AXO 1
31 742
41
XI 5
31742
4AX02
3
1762
41x01
3 1762
41x03
31762
4AXOO
0.9
T 31742
t
41 X63
31742
41x65

AUTOMATIC TRANSMISSIO
Standard 0.10 - 0.25 Low one-way clutch inner race to seal ring clearance mm
Limit 0.25
OIL PUMP AND LOW ONE-WAY CLUTCH
-
TOTAL END PLAY --
Total end play mm 0.25 - 0.55 I
0.1 5 - 0.22
0.11
- 0.18 Oil pump clearance mm
Thickness mm
Inner gear and outer gear to housing
0.03 - 0.05
Standard 0.1 0 - 0.25 Oil pump cover to seal ring clearance mm , Limit 0.25
Outer
gear to crescendo
Outer gear to housing
I Parts number
Bearing race
REVERSECLUTCHENDPLAY
Reverse clutch drum end play mm 0.55 - 0.90 I
Oil pump thrust washer
ADJUSTMENT OF TANDEM BRAKE BAND TENSION
Number of turns of anchor end pin back-off I 2.375 - 2.625
Anchor end pin tightening torque N.m (kg-m) 4.0 - 5.8
(0.4 - 0.6)
TIGHTENING TORQUE
Unit: N.m (kg-m)
Lock
nut tightening torque N-m
(kg-m)
Transmission to engine mounting bolt
41 - 50 (4.1 - 5.2)
I TIM side to engine side I 40 - 49 (4.0 - 5.0) - - - - - - -- - - - - - -
I Engine side to TIM side I 30 - 39 (3.0 - 4.0)

PROPELLER SHAFT
Type
2S56A 3S63C-T
3S71 C-T
3F80A-2VL107
Journal bearing end play mm
TIGHTENING TORQUE
Unit: N.m (kg-m)
Amount of runout mm
0
Center bearing bracket to underbody
Propeller
shaft flange yoke to companion flange Less
than
0.6
42
- 48 (4.2 - 4.9)
55 - 64 (5.6 - 6.6) .