ACURA NSX 1991 Service Repair Manual

Transmission

Removal (cont'd)

20. Remove the intermediate shaft heat cover and the intermediate shaft mounting bolts.

21. Pry the intermediate shaft out of the differential. Pull and remove it.

NOTE:

INTERMEDIATE SHAFT

INTERMEDIATE SHAFT

HEAT COVER

INTERMEDIATE SHAFT

MOUNTING BOLT
SET RING

Replace.

INTERMEDIATE SHAFT

22. Remove the parking brake cable holder and the wheel sensor wire clamp.

23. Make a reference mark on the flange of the adjusting bolt, adjusting cam and lower control arm.

24. Separate the toe control arm from the side beam.

25. Remove the damper fork bolt.

26. Separate the lower control arm from the side beam.

27. Pry the driveshaft out of the differential. Pull and remove it.

NOTE:

TOE CONTROL ARM

DAMPER FORK BOLT

PARKING BRAKE

CABLE HOLDER

SIDE BEAM

SET RING

Replace.

SELF-LOCKING NUT

Replace.
ADJUSTING

CAM
ADJUSTING

BOLT
SELF-LOCKING

NUT

Replace.
LOWER CONTROL

ARM
WHEEL SENSOR

WIRE CLAMP
SUPPORT BASE
Coat all precision finished surfaces with clean engine oil or grease.

Tie plastic bags over the driveshaft ends.

Coat all precision finished surfaces with clean engine oil or grease.

Tie plastic bags over the driveshaft ends.ProCarManuals.com

28. Remove the one bolt of the upper arm mounting bolts.
29. Remove the shift cable cover and shift cable holder.
30. Remove the shift cable from the control lever.
31. Remove the torque converter cover and then remove the drive plate bolts.
DRIVE PLATE
DAMPER
UPPER CONTROL

ARM

SHIFT

CABLE

SHIFT CABLE

HOLDER

SHIFT CABLE

COVER

CONTROL

LEVER

TORQUE CONVERTER

COVER

UPPER ARM MOUNTING

BOLT

32. Attach a chain hoist to the transmission hangers.
33. Place a jack under the transmission and raise the transmission just enough to take weight off of the mounts.34. Remove the front engine mounting bolts on the transmission side and retighten the bolt on the engine side.
CAUTION: Loosen the front engine mounting bolt on the engine side, but do not remove it. After removing the
two bolts on the transmission side, be sure to retighten the bolt on the engine side.
35. Remove the rear transmission mounting bolts.
36. Remove the transmission housing mounting bolts..
37. Pull the transmission away from the engine until it clears the dowel pins, then lower it on the transmission jack.
TRANSMISSION HOUSINGMOUNTING BOLT
FRONT ENGINE MOUNTINGBOLT (Engine side)
FRONT ENGINE MOUNTING
BOLTS (Transmission side)
FRONT ENGINE MOUNT
TRANSMISSION HOUSING MOUNTING BOLT
TRANSMISSION JACK
REAR TRANSMISSION
MOUNTING BOLT REAR TRANSMISSION

MOUNTProCarManuals.com

Illustrated Index

Left Side CoverProCarManuals.com

LEFT SIDE COVER
DOWEL PIN
GASKET Replace.
SEALING WASHER
Replace.

O-RING
Replace.

1ST-HOLD CLUTCH FEED PIPE
O-RING
Replace.
FEED PIPE FLANGE
SNAP RING
1ST CLUTCH FEED PIPE
O-RING
Replace.
FEED PIPE FLANGE
SNAP RING
CONICAL SPRING WASHER
Replace.
BALL BEARING
1ST-HOLD CLUTCH ASSEMBLY
O-RING
Replace.
THRUST WASHER
THRUST NEEDLE BEARING
1ST-HOLD CLUTCH HUB
COUNTERSHAFT 1ST GEAR
ONE-WAY CLUTCH NEEDLE BEARINGS
COUNTERSHAFT 1ST GEAR COLLAR
PARKING GEAR
CONICAL SPRING WASHER
Replace.
1ST CLUTCH ASSEMBLY
O-RING
Replace.
THRUST WASHER
THRUST NEEDLE BEARING
NEEDLE BEARINGMAINSHAFT 1ST GEAR
THRUST WASHER MAINSHAFT 1ST GEAR COLLAR
PARKING BRAKE PAWL STOPPER PARKING BRAKE PAWL
PARKING BRAKE PAWL SPRING
PARKING BRAKE PAWL SHAFT
LOCK WASHER
Replace.
PARKING BRAKE STOPPER

ROLLER PIN

PARKING BRAKE LEVER
WASHER
PARKING BRAKE SPRING

ROLLER

COTTER PIN
Replace.
SEALING WASHER
Replace.

CONICAL SPRING WASHER
Replace.

TRANSMISSION HANGER/CONNECTOR STAY
SEALING WASHER
Replace.

BREATHER JOINT
BREATHER CAP
TRANSMISSION HANGER COUNTERSHAFT SPEED SENSOR
O-RING
Replace.
ATF COOLER
ATF COOLER FILTER/GASKET
Replace.

SPEED SENSOR COVER
LINEAR SOLENOID SHIM
O-RING
Replace.
LINEAR SOLENOID
CONNECTOR STAY
MAINSHAFT SPEED SENSOR
O-RING
Replace.
ATF LEVEL GAUGE
ATF LEVEL GAUGE PIPE
O-RING
Replace.
RETAINER PLATE
BALL BEARING
COUNTERSHAFT SPEED SENSOR WASHER
TORQUE SPECIFICATIONProCarManuals.com

Illustrated Index

Transmission HousingProCarManuals.com

SNAP RING
WASHER
THRUST NEEDLE BEARING MAINSHAFT 4TH GEAR
NEEDLE BEARINGS
MAINSHAFT 4TH GEAR COLLAR
THRUST NEEDLE BEARING
THRUST WASHER 4TH CLUTCH ASSEMBLY
O-RING Replace.

MAINSHAFT

SEALING RING 37 mm
NEEDLE BEARING SET RING
REVERSE SHIFT FORK
LOCK WASHER
Replace.
COUNTERSHAFT REVERSE GEAR COLLAR
THRUST WASHER
COUNTERSHAFT REVERSE GEAR
NEEDLE BEARING
REVERSE SELECTOR
REVERSE SELECTOR HUB
COUNTERSHAFT 4TH GEARNEEDLE BEARING (Separate type)
COTTER RETAINER
COTTERS
COUNTERSHAFT 2ND GEAR SPACER
COUNTERSHAFT 2ND GEAR
THRUST NEEDLE BEARING
COUNTERSHAFT 3RD GEAR
NEEDLE BEARING
THRUST NEEDLE BEARING
COUNTERSHAFT 3RD GEAR COLLAR3RD CLUTCH ASSEMBLY
O-RING
Replace.
COUNTERSHAFT
SPACER 31 mm
2ND CLUTCH ASSEMBLY
O-RINGS
Replace.
THRUST WASHER
THRUST NEEDLE BEARING
SECONDARY SHAFT 2ND GEAR
NEEDLE BEARING
THRUST NEEDLE BEARING
SECONDARY SHAFT
SEALING RING 35 mm
DIFFERENTIAL OIL SEAL
Replace.
REVERSE IDLER GEAR SHAFT/HOLDER
REVERSE IDLER GEAR SHAFT SPRING
STEEL BALL (7/32) 7
NEEDLE BEARING

TRANSMISSION HOUSING
REVERSE IDLER GEAR
CONNECTOR STAY
SEALING WASHER
Replace.

THRUST SHIM

BEARING OUTER RACE
SNAP RING
SECONDARY SHAFT BALL BEARING
COUNTERSHAFT BALL BEARING
MAINSHAFT BALL BEARING
GASKET
Replace.
DOWEL PIN
DIFFERENTIAL GEAR ASSEMBLY
BEARING OUTER RACE

THRUST SHIM

DIFFERENTIAL OIL GUIDE RING
2ND CLUTCH FEED PIPE
1ST-HOLD CLUTCH FEED PIPE
4TH CLUTCH FEED PIPE
1ST CLUTCH FEED PIPE
3RD CLUTCH FEED PIPE
TORQUE CONVERTER HOUSING DRIVESHAFT OIL SEAL
Replace.
TORQUE SPECIFICATIONProCarManuals.com

Illustrated Index

Torque Converter Housing/Valve BodyProCarManuals.com

ATF STRAIER Clean or replace.

O-RING
Replace.

ACCUMULATOR COVER
LOCK WASHER
Replace.
SERVO DETENT BASE
SERVO VALVE BODY
SERVO SEPARATOR PLATE CHECK BALLS (7/32) 7
SECONDARY VALVE BODY FILTER
Replace.
SECONDARY VALVE BODY
SECONDARY SEPARATOR PLATE
DOWEL PIN
LOCK-UP VALVE BODY
LOCK-UP SEPARATOR PLATE
DOWEL PIN REGULATOR VALVE BODY
O-RING
Replace.
STATOR SHAFT ASSEMBLY
STOPPER PIN
MAIN VALVE BODY FILTER
Replace. CHECK BALLS (7/32) 7
MAIN VALVE BODY
ONE-WAY RELIEF VALVE SPRING
ONE-WAY RELIEF VALVE
OIL PUMP DRIVEN GEAR
OIL PUMP DRIVE GEAR
OIL PUMP DRIVEN GEAR SHAFT
DOWEL PIN MAIN SEPARATOR PLATE
TORQUE CONVERTER CHECK VALVE
TORQUE CONVERTER CHECK VALVE SPRING ATF LUBRICATION PIPE
2ND ACCUMULATOR BODY
LSD RELIEF VALVE SPRINGLSD RELIEF VALVE
CONTROL SHAFT
CONTROL LEVER
OIL SEAL
Replace.
LOCK WASHER
Replace.

CHANGE SHAFT
CHANGE SHAFT CAP
SHIFT CONTROL SOLENOID VALVE ASSEMBLY
SHIFT CONTROL SOLENOID FILTER/GASKET
Replace.
LOCK-UP CONTROL SOLENOID VALVE ASSEMBLY
LOCK-UP CONTROL SOLENOID FILTER/GASKET
Replace.
VEHICLE SPEED SENSOR ASSEMBLY
O-RING Replace.

SECONDARY SHAFT NEEDLE BEARING
Replace.

OIL GUIDE PLATE
Replace.

COUNTERSHAFT NEEDLE BEARING
Replace.

OIL GUIDE PLATE
Replace.

MAINSHAFT BALL BEARING
Replace.

MAINSHAFT OIL SEAL
Replace.

SEALING WASHER
Replace.

4TH OIL GUIDE PLATE/PIPE
3RD OIL GUIDE PLATE
TORQUE SPECIFICATIONProCarManuals.com

Left Side Cover

Removal

CAUTION: Protect the lip of the
driveshaft oil seal by reinstalling three
bolts, after removing the speed sensor
cover.

DRIVESHAFT

OIL SEAL
VEHICLE SPEED

SENSOR (VSS)

COVER BOLT

MAINSHAFT HOLDER

07924–PJ4010A

NOTE: Using a chisel, cut the lock tab. Pry

it up and then remove the locknut from each

shaft.
CAUTION: Keep all of the chiseled
particles out of the transmission.

CHISEL

LOCK TAB

Reinstall 3 bolts around
the driveshaft oil seal.

NOTE:

Clean all parts thoroughly in solvent or carburetor cleaner and dry with compressed air.
Blow out all passages.
Cut the lock tab and raise it, then remove the locknut of each shaft.
Countershaft locknut has left-hand threads.
1. Remove the vehicle speed sensor (VSS) cover, then reinstall three bolts around the driveshaft oil seal.
CAUTION: Do not damage the driveshaft oil seal lip.
2. Slip the special tool onto the mainshaft and engage the parking brake pawl with the parking gear.
3. Remove the transmission left side cover in the following numbered sequence. NOTE: Remove the special tool from the mainshaft after removing the locknuts.ProCarManuals.com

NOTE: Remove three shafts

together.

MAINSHAFT

SECONDARY
NOTE: Align the control shaft spring
pin with the groove in the transmission
housing.
SPRING

PIN

CONTROL

SHAFT

GROOVE

HOUSING PULLER

07HAC–PK4010A

2 Bolts

Transmission Housing

Removal

SHAFTCOUNTERSHAFT

Clean all parts thoroughly in solvent or carburetor cleaner and dry with compressed air.
Blow out all passages. The (7/32) 7 steel ball in reverse idler gear shaft is under spring pressure, take care not to let it pop out.

NOTE:

1. Remove the transmission housing in the following numbered sequence.
CAUTION: Set the special tool with bolts as shown.

BOLTProCarManuals.com