Nissan 240SX — Automatic Transmission (Section AT) (2000 year). Instruction — part 18

SAT217B

c.

Install needle bearing on transmission case.

I

Pay attention to its direction — Black side goes to rear.

I

Apply petroleum jelly to needle bearing.

SAT218B

d.

Install parking gear on transmission case.

SAT960A

e.

Install snap ring on rear of output shaft.

I

Check to be sure output shaft cannot be removed in for-
ward direction.

SAT528GB

6.

Install rear extension.

a.

Install oil seal on rear extension.

I

Apply ATF to oil seal.

SAT191B

b.

Install O-ring on revolution sensor.

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Apply ATF to O-ring.

c.

Install revolution sensor on adapter case.

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ASSEMBLY

Assembly (1) (Cont’d)

AT-273

SAT963A

d.

Install adapter case gasket on transmission case.

SAT964A

e.

Install parking rod on transmission case.

SAT189B

f.

Install rear extension on transmission case.

SAT974A

7.

Install front side clutch and gear components.

a.

Install rear sun gear on transmission case.

I

Pay attention to its direction.

SAT967A

b.

Make sure needle bearing is on front of front planetary carrier.

I

Apply petroleum jelly to needle bearing.

c.

Make sure needle bearing is on rear of front planetary carrier.

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Apply petroleum jelly to bearing.

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Pay attention to its direction — Black side goes to front.

ASSEMBLY

Assembly (1) (Cont’d)

AT-274

SAT969A

d.

While rotating forward clutch drum clockwise, install front plan-
etary carrier on forward clutch drum.

SAT970A

I

Check that portion A of front planetary carrier protrudes
approximately 2 mm (0.08 in) beyond portion B of forward
clutch assembly.

SAT971A

e.

Make sure bearing races are on front and rear of clutch pack.

I

Apply petroleum jelly to bearing races.

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Securely engage pawls of bearing races with holes in
clutch pack.

SAT973A

f.

Install clutch pack into transmission case.

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ASSEMBLY

Assembly (1) (Cont’d)

AT-275

Adjustment

=NMAT0156

When any parts listed in the following table are replaced, total end
play or reverse clutch end play must be adjusted.

Part name

Total end play

Reverse clutch end play

Transmission case

I

I

Low one-way clutch inner race

I

I

Overrun clutch hub

I

I

Rear internal gear

I

I

Rear planetary carrier

I

I

Rear sun gear

I

I

Front planetary carrier

I

I

Front sun gear

I

I

High clutch hub

I

I

High clutch drum

I

I

Oil pump cover

I

I

Reverse clutch drum

—

I

SAT433I

1.

Adjust total end play.

a.

Install new oil pump gasket on transmission case.

SAT207B

b.

Install pump cover bearing race on clutch pack.

SAT208B

c.

Measure distance “B” between front end of transmission case
and oil pump cover bearing race.

ASSEMBLY

Adjustment

AT-276

SAT209B

d.

Measure distance “C” between front end of transmission case
and oil pump gasket.

SAT210B

e.

Determine dimension “A” by using the following equation.

A = B − C

SAT211B

f.

Install needle bearing on oil pump assembly.

g.

Measure distance “D” between needle bearing and machined
surface of oil pump cover assembly.

SAT975A

h.

Determine total end play “T

1

” by using the following equation.

T

1

= A − D − 0.1

Total end play “T

1

”:

0.25 - 0.55 mm (0.0098 - 0.0217 in)

I

If end play is out of specification, decrease or increase thick-
ness of oil pump cover bearing race as necessary.

Available oil pump cover bearing race:

Refer to SDS, AT-292.

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ASSEMBLY

Adjustment (Cont’d)

AT-277

SAT212B

2.

Adjust reverse clutch drum end play.

a.

Install oil pump thrust washer on clutch pack.

SAT213B

b.

Measure distance “F” between front end of transmission case
and oil pump thrust washer.

c.

Measure distance “G” between front end of transmission case
and gasket.

SAT214B

d.

Determine dimension “E” by using the following equation.

E = F − G

SAT215B

e.

Measure distance “H”.

ASSEMBLY

Adjustment (Cont’d)

AT-278

SAT980A

f.

Determine reverse clutch drum end play “T

2

” by using the fol-

lowing equation.

T

2

= E − H − 0.1

Reverse clutch drum end play “T

2

”:

0.55 - 0.90 mm (0.0217 - 0.0354 in)

I

If end play is out of specification, decrease or increase thick-
ness of oil pump thrust washer as necessary.

Available oil pump thrust washer:

Refer to SDS, AT-293.

3.

Remove any part installed to adjust end plays.

SAT985A

Assembly (2)

NMAT0157

1.

Install brake band and band strut.

a.

Install band strut on brake band.

I

Apply petroleum jelly to band strut.

SAT986A

b.

Place brake band on periphery of reverse clutch drum, and
insert band strut into end of band servo piston stem.

SAT987A

c.

Install anchor end bolt on transmission case. Then, tighten
anchor end bolt just enough so that reverse clutch drum (clutch
pack) will not tilt forward.

SAT988A

2.

Install input shaft on transmission case.

I

Pay attention to its direction — O-ring groove side is front.

3.

Install gasket on transmission case.

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ASSEMBLY

Adjustment (Cont’d)

AT-279

SAT989A

4.

Install oil pump assembly.

a.

Install needle bearing on oil pump assembly.

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Apply petroleum jelly to the needle bearing.

b.

Install selected thrust washer on oil pump assembly.

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Apply petroleum jelly to thrust washer.

SAT990A

c.

Carefully install seal rings into grooves and press them into the
petroleum jelly so that they are a tight fit.

SAT991A

d.

Install O-ring on oil pump assembly.

I

Apply petroleum jelly to O-ring.

SAT992A

e.

Apply petroleum jelly to mating surface of transmission case
and oil pump assembly.

SAT993A

f.

Install oil pump assembly.

I

Install two converter housing securing bolts in bolt holes
in oil pump assembly as guides.

ASSEMBLY

Assembly (2) (Cont’d)

AT-280

SAT994A

I

Insert oil pump assembly to the specified position in
transmission, as shown at left.

SAT114B

5.

Install O-ring on input shaft.

I

Apply ATF to O-rings.

SAT397C

6.

Install converter housing.

a.

Apply recommended sealant (Nissan genuine part: KP610-
00250 or equivalent) to outer periphery of bolt holes in con-
verter housing.

I

Do not apply too much sealant.

SAT158G

b.

Apply recommended sealant (Nissan genuine part: KP610-
00250 or equivalent) to seating surfaces of bolts that secure
front of converter housing.

c.

Install converter housing on transmission case.

SAT001B

7.

Adjust brake band.

a.

Tighten anchor end bolt to specified torque.

Anchor end bolt:

: 4 - 6 N·m (0.4 - 0.6 kg-m, 35 - 52 in-lb)

b.

Back off anchor end bolt two and a half turns.

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ASSEMBLY

Assembly (2) (Cont’d)

AT-281

SAT002B

c.

While holding anchor end bolt, tighten lock nut.

Anchor end bolt nut:

: 41 - 50 N·m (4.1 - 5.1 kg-m, 30 - 36 ft-lb)

SAT115B

8.

Install terminal cord assembly.

a.

Install O-ring on terminal cord assembly.

I

Apply petroleum jelly to O-ring.

b.

Compress terminal cord assembly stopper and install terminal
cord assembly on transmission case.

SAT004BA

9.

Install control valve assembly.

a.

Install accumulator piston return springs B, C and D.

Free length of return springs:

Refer to SDS, AT-289.

SAT005B

b.

Install manual valve on control valve.

I

Apply ATF to manual valve.

SAT006B

c.

Place control valve assembly on transmission case. Connect
solenoid connector for upper body.

d.

Install connector clip.

ASSEMBLY

Assembly (2) (Cont’d)

AT-282

SAT353B

e.

Install control valve assembly on transmission case.

f.

Install connector tube brackets and tighten bolts A and B.

I

Check that terminal assembly does not catch.

Bolt symbol



mm (in)

A

33 (1.30)

B

45 (1.77)

SAT221B

g.

Install O-ring on oil strainer.

I

Apply petroleum jelly to O-ring.

h.

Install oil strainer on control valve.

SAT009B

i.

Securely fasten terminal harness with clips.

SAT010B

j.

Install torque converter clutch solenoid valve and A/T fluid tem-
perature sensor connectors.

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ASSEMBLY

Assembly (2) (Cont’d)

AT-283

SAT011B

10. Install oil pan.
a.

Attach a magnet to oil pan.

SAT601B

b.

Install new oil pan gasket on transmission case.

c.

Install oil pan and bracket on transmission case.

I

Always replace oil pan bolts as they are self-sealing bolts.

I

Before installing bolts, remove traces of sealant and oil
from mating surface and thread holes.

I

Tighten four bolts in a criss-cross pattern to prevent dis-
location of gasket.

d.

Tighten drain plug.

SAT299I

11. Install PNP switch.
a.

Check that manual shaft is in “1” position.

b.

Temporarily install PNP switch on manual shaft.

c.

Move manual shaft to “N”.

SAT014B

d.

Tighten bolts while inserting 4.0 mm (0.157 in) dia. pin verti-
cally into locating holes in PNP switch and manual shaft.

SAT428DA

12. Install torque converter.
a.

Pour ATF into torque converter.

I

Approximately 2 liters (1-3/4 Imp qt) of fluid are required
for a new torque converter.

I

When reusing old torque converter, add the same amount
of fluid as was drained.

ASSEMBLY

Assembly (2) (Cont’d)

AT-284

SAT016B

b.

Install torque converter while aligning notches and oil pump.

SAT017B

c.

Measure distance A to check that torque converter is in proper
position.

Distance “A”:

23.5 mm (0.925 in) or more

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ASSEMBLY

Assembly (2) (Cont’d)

AT-285

A/T Fluid Cooler

NMAT0251

COMPONENTS

NMAT0251S01

SAT447K

REMOVAL AND INSTALLATION

NMAT0251S02

1.

Disconnect fluid hoses from fluid cooler unit.

2.

Remove fluid cooler unit.

3.

Remove fluid cooler bracket.

4.

Remove clips securing fluid hose (cooler unit to radiator) and
loosen hose clamps, then remove the fluid hose.

5.

Loosen clamps securing fluid hose (A/T assembly to fluid
cooler), then remove the fluid hose.

I

Reverse the removal procedure to install the A/T fluid cooler
unit. Refer to the component drawing and specified tightening
torque.

A/T FLUID COOLER SYSTEM

A/T Fluid Cooler

AT-286

I

Check A/T fluid level and refill if necessary. Refer to “Check-
ing A/T Fluid”, AT-9.

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A/T FLUID COOLER SYSTEM

A/T Fluid Cooler (Cont’d)

AT-287

General Specifications

NMAT0160

Applied model

SR20DET

2WD

Automatic transmission model

RE4R01A

Transmission model code number

4EX72

Stall torque ratio

2.0 : 1

Transmission gear ratio

1st

2.785

2nd

1.545

Top

1.000

OD

0.694

Reverse

2.272

Recommended fluid

Genuine Nissan ATF or equivalent*1

Fluid capacity

7.9



(7 Imp qt)

*1: Refer to MA-8, “Fluids and Lubricants”.

Shift Schedule

NMAT0178

VEHICLE SPEED WHEN SHIFTING GEARS THROTTLE POSITION

NMAT0178S01

Throttle position

Vehicle speed km/h (MPH)

D

1

,

D

2

D

2

,

D

3

D

3

,

D

4

D

4

,

D

3

D

3

,

D

2

D

2

,

D

1

1

2

,

1

1

Full throttle

55 - 59

(34 - 37)

108 - 116

(67 - 72)

182 - 192

(113 - 119)

176 - 186

(109 - 116)

103 - 111

(64 - 69)

40 - 44

(25 - 27)

46 - 50

(29 - 31)

Half throttle

45 - 49

(28 - 30)

88 - 94

(55 - 58)

146 - 154

(91 - 96)

87 - 95

(54 - 59)

39 - 45

(24 - 28)

10 - 14

(6 - 9)

46 - 50

(29 - 31)

VEHICLE SPEED WHEN PERFORMING AND RELEASING LOCK-UP

NMAT0178S02

Throttle position

Overdrive control switch [Shift posi-

tion]

Vehicle speed km/h (MPH)

Lock-up “ON”

Lock-up “OFF”

Full throttle

ON [D

4

]

127 - 135 (79 - 84)

122 - 130 (76 - 81)

OFF [D

3

]

91 - 99 (57 - 62)

86 - 94 (53 - 58)

Half throttle

ON [D

4

]

127 - 135 (79 - 84)

122 - 130 (76 - 81)

OFF [D

3

]

91 - 99 (57 - 62)

86 - 94 (53 - 58)

Stall Revolution

NMAT0163

Stall revolution

rpm

2,725 - 2,975

Line Pressure

NMAT0164

Engine speed

rpm

Line pressure kPa (bar, kg/cm

2

, psi)

D, 2 and 1 positions

R position

Idle

437 - 470 (4.46 - 4.79, 63.4 - 68.2)

676 - 715 (6.90 - 7.29, 98.0 - 103.7)

Stall

1,039 - 1,117 (10.60 - 11.39, 150.7 - 162.0)

1,480 - 1,558 (15.10 - 15.89, 214.6 - 225.9)

SERVICE DATA AND SPECIFICATIONS (SDS)

General Specifications

AT-288