Nissan 240SX - Automatic Transmission (Section AT) (2000 year). Instruction

Forward Clutch Drum Assembly

COMPONENTS

NMAT0140

SAT211GA

SAT212G

DISASSEMBLY

NMAT0141

Remove snap ring from forward clutch drum.

Remove side plate from forward clutch drum.

SAT213G

Remove low one-way clutch from forward clutch drum.

Remove snap ring from forward clutch drum.

SAT891A

Remove needle bearing from forward clutch drum.

IDX

REPAIR FOR COMPONENT PARTS

Forward Clutch Drum Assembly

AT-257

SAT892A

INSPECTION

NMAT0142

Forward Clutch Drum

NMAT0142S01

Check spline portion for wear or damage.

Check frictional surfaces of low one-way clutch and needle
bearing for wear or damage.

SAT893A

Needle Bearing and Low One-way Clutch

NMAT0142S02

Check frictional surface for wear or damage.

SAT214G

ASSEMBLY

NMAT0143

Install needle bearing in forward clutch drum.

Install snap ring onto forward clutch drum.

SAT894A

Install low one-way clutch onto forward clutch drum by push-
ing the roller in evenly.

SAT895A

Install low one-way clutch with flange facing rearward.

REPAIR FOR COMPONENT PARTS

Forward Clutch Drum Assembly (Cont’d)

AT-258

SAT887A

Install side plate onto forward clutch drum.

Install snap ring onto forward clutch drum.

Rear Internal Gear and Forward Clutch Hub

COMPONENTS

NMAT0144

SAT896AA

SAT897A

DISASSEMBLY

NMAT0145

Remove rear internal gear by pushing forward clutch hub for-
ward.

SAT898A

Remove thrust washer from rear internal gear.

IDX

REPAIR FOR COMPONENT PARTS

Forward Clutch Drum Assembly (Cont’d)

AT-259

SAT899A

Remove snap ring from forward clutch hub.

SAT900A

Remove end bearing.

SAT955A

Remove forward one-way clutch and end bearing as a unit
from forward clutch hub.

SAT901A

Remove snap ring from forward clutch hub.

SAT902A

INSPECTION

NMAT0146

Rear Internal Gear and Forward Clutch Hub

NMAT0146S01

Check gear for excessive wear, chips or cracks.

Check frictional surfaces of forward one-way clutch and thrust
washer for wear or damage.

Check spline for wear or damage.

REPAIR FOR COMPONENT PARTS

Rear Internal Gear and Forward Clutch Hub (Cont’d)

AT-260

SAT903A

Snap Ring and End Bearing

NMAT0146S02

Check for deformation or damage.

SAT901A

ASSEMBLY

NMAT0147

Install snap ring onto forward clutch hub.

Install end bearing.

SAT904A

Install forward one-way clutch onto clutch hub.

Install forward one-way clutch with flange facing rearward.

Install end bearing.

Install snap ring onto forward clutch hub.

SAT906A

Install thrust washer onto rear internal gear.

Apply petroleum jelly to thrust washer.

Securely insert pawls of thrust washer into holes in rear
internal gear.

SAT907A

Position forward clutch hub in rear internal gear.

IDX

REPAIR FOR COMPONENT PARTS

Rear Internal Gear and Forward Clutch Hub (Cont’d)

AT-261

SAT905A

After installing, check to assure that forward clutch hub rotates
clockwise.

Band Servo Piston Assembly

COMPONENTS

NMAT0148

SAT908AC

SAT909A

DISASSEMBLY

NMAT0149

Block one oil hole in OD servo piston retainer and the center
hole in OD band servo piston.

Apply compressed air to the other oil hole in piston retainer to
remove OD band servo piston from retainer.

Remove D-ring from OD band servo piston.

SAT910A

Remove band servo piston assembly from servo piston
retainer by pushing it forward.

REPAIR FOR COMPONENT PARTS

Rear Internal Gear and Forward Clutch Hub (Cont’d)

AT-262

SAT911A

Place piston stem end on a wooden block. While pushing
servo piston spring retainer down, remove E-ring.

SAT912A

Remove servo piston spring retainer, return spring C and pis-
ton stem from band servo piston.

SAT913A

Remove E-ring from band servo piston.

SAT914A

Remove servo cushion spring retainer from band servo piston.

Remove D-rings from band servo piston.

10. Remove O-rings from servo piston retainer.

SAT915A

INSPECTION

NMAT0150

Pistons, Retainers and Piston Stem

NMAT0150S01

Check frictional surfaces for abnormal wear or damage.

IDX

REPAIR FOR COMPONENT PARTS

Band Servo Piston Assembly (Cont’d)

AT-263

SAT916AA

Return Springs

NMAT0150S02

Check for deformation or damage. Measure free length and
outer diameter.

Inspection standard:

Refer to SDS, AT-289.

SAT917A

ASSEMBLY

NMAT0151

Install O-rings onto servo piston retainer.

Apply ATF to O-rings.

Pay attention to position of each O-ring.

SAT918A

Install servo cushion spring retainer onto band servo piston.

SAT919A

Install E-ring onto servo cushion spring retainer.

SAT920A

Install D-rings onto band servo piston.

Apply ATF to D-rings.

REPAIR FOR COMPONENT PARTS

Band Servo Piston Assembly (Cont’d)

AT-264

SAT912A

Install servo piston spring retainer, return spring C and piston
stem onto band servo piston.

SAT921A

Place piston stem end on a wooden block. While pushing
servo piston spring retainer down, install E-ring.

SAT922A

Install band servo piston assembly onto servo piston retainer
by pushing it inward.

SAT923A

Install D-ring on OD band servo piston.

Apply ATF to D-ring.

SAT924A

Install OD band servo piston onto servo piston retainer by
pushing it inward.

IDX

REPAIR FOR COMPONENT PARTS

Band Servo Piston Assembly (Cont’d)

AT-265

Parking Pawl Components

COMPONENTS

NMAT0152

SAT836J

SAT226H

DISASSEMBLY

NMAT0153

Slide return spring to the front of adapter case flange.

Remove return spring, parking pawl spacer and parking pawl
from adapter case.

Remove parking pawl shaft from adapter case.

SAT228H

Remove parking actuator support from adapter case.

SAT998G

INSPECTION

NMAT0209

Parking Pawl and Parking Actuator Support

NMAT0209S01

Check contact surface of parking rod for wear.

REPAIR FOR COMPONENT PARTS

Parking Pawl Components

AT-266

SAT229H

ASSEMBLY

NMAT0154

Install parking actuator support onto adapter case.

Insert parking pawl shaft into adapter case.

Install return spring, pawl spacer and parking pawl onto park-
ing pawl shaft.

SAT226H

Bend return spring upward and install it onto adapter case.

IDX

REPAIR FOR COMPONENT PARTS

Parking Pawl Components (Cont’d)

AT-267

SAT931A

Assembly (1)

NMAT0155

Install manual shaft components.

Install oil seal onto manual shaft.

Apply ATF to oil seal.

Wrap threads of manual shaft with masking tape.

Insert manual shaft and oil seal as a unit into transmission
case.

Remove masking tape.

SAT932A

Push oil seal evenly and install it onto transmission case.

SAT933A

Align groove in shaft with retaining pin hole, then retaining pin
into position as shown in figure at left.

SAT901E

Install detent spring and spacer.

While pushing detent spring down, install manual plate onto
manual shaft.

SAT936A

Install lock nuts onto manual shaft.

ASSEMBLY

Assembly (1)

AT-268

SAT523GA

Install accumulator piston.

Install O-rings onto accumulator piston.

Apply ATF to O-rings.

Accumulator piston O-rings

Unit: mm (in)

Accumulator

Small diameter end

29 (1.14)

32 (1.26)

45 (1.77)

29 (1.14)

Large diameter end

45 (1.77)

50 (1.97)

45 (1.77)

SAT938A

Install return spring for accumulator A onto transmission case.

Free length of return spring:

Refer to SDS, AT-289.

SAT939AA

Install accumulator pistons A, B, C and D.

Apply ATF to transmission case.

SAT941A

Install band servo piston.

Install return springs onto servo piston.

SAT942A

Install band servo piston onto transmission case.

Apply ATF to O-ring of band servo piston and transmis-
sion case.

Install gasket for band servo onto transmission case.

IDX

ASSEMBLY

Assembly (1) (Cont’d)

AT-269

SAT940A

Install band servo retainer onto transmission case.

SAT943AA

Install rear side clutch and gear components.

Place transmission case in vertical position.

SAT944A

Slightly lift forward clutch drum assembly. Then slowly rotate it
clockwise until its hub passes fully over clutch inner race inside
transmission case.

SAT945A

Check to be sure that rotation direction of forward clutch
assembly is correct.

SAT946A

Install thrust washer onto front of overrun clutch hub.

Apply petroleum jelly to the thrust washer.

Insert pawls of thrust washer securely into holes in over-
run clutch hub.

ASSEMBLY

Assembly (1) (Cont’d)

AT-270

SAT947A

Install overrun clutch hub onto rear internal gear assembly.

SAT948A

Install needle bearing onto rear of overrun clutch hub.

Apply petroleum jelly to needle bearing.

SAT949A

Check that overrun clutch hub rotates as shown while holding
forward clutch hub.

SAT950A

Place transmission case into horizontal position.

SAT951A

Install rear internal gear, forward clutch hub and overrun clutch
hub as a unit onto transmission case.

IDX

ASSEMBLY

Assembly (1) (Cont’d)

AT-271

SAT952A

Install needle bearing onto rear internal gear.

Apply petroleum jelly to needle bearing.

SAT953A

Install bearing race onto rear of front internal gear.

Apply petroleum jelly to bearing race.

Securely engage pawls of bearing race with holes in front
internal gear.

SAT954A

Install front internal gear on transmission case.

SAT216B

Install output shaft and parking gear.

Insert output shaft from rear of transmission case while slightly
lifting front internal gear.

Do not force output shaft against front of transmission
case.

SAT957A

Carefully push output shaft against front of transmission case.
Install snap ring on front of output shaft.

Check to be sure output shaft cannot be removed in rear
direction.

ASSEMBLY

Assembly (1) (Cont’d)

AT-272

Nissan 240SX - Automatic Transmission (Section AT) (2000 year). Instruction - part 17