1991 ACURA NSX Service Repair Manual

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Clutch Disc, Clutch Plate

Replacement

NOTE: The clutch discs and clutch plates should be
replaced as a set.
1. Remove the clutch discs and clutch plates (see

page15-20).

2. Soak the clutch discs for five minutes in transmis-
sion oil.
3. Install the clutch discs, clutch plates, and a stan- dard shim.
NOTE: Position the 112 mm thrust Shim with the
thickness size mark facing away from the clutch

discs.

112 mm THRUST SHIM
Standard shim

A
B

C

D
E
F

G
J

Part Number

41261-PR8-000
41262-PR8-000
41263-PR8-000

41264-PR8-000
41265-PR8-000

41266-PR
8-000

41267-PR8-000

41268-PR8-000

41269-PR8-000

41270-PR8-000
Thickness

1.2 mm (0.0472 in)

1.4 mm (0.0551 in)
1.6 mm [0.0630 in)

1.8 mm (0.0709 in)

2.0 mm (0.0787 in)
2.2 mm (0,0866 in)
2.4 mm (0,0945 in)
2.6 mm (0.1024 in)
2.8 mm (0.1102 in)
3.0 mm (0.1181 in)


Measure

41.7– 41.9
mm

(1.642 – 1.650 In)
112 mm THRUST SHIM

FINAL

DRIVEN

GEAR

4. Install the differential housing.
NOTE: Tighten the bolts evenly in several steps,
then torque them in a crisscross pattern.
Torque: 40 N·m (4.0 kg-m. 29 Ib-ft)
5. Make sure the preset torque is within the standard (see page 15-18)
6. If preset torque is beyond the standard, replace the 112 mm thrust shim as necessary.ProCarManuals.com

Differential
Reassembl y
1. Instal l th e clutc h disc , clutc h plate , centra l gear ,
an d carrie r assembly .
NOTE : Lubricat e th e clutc h dis c surfac e wit h
transmissio n fluid .
CARRIE R ASSEMBL Y
CENTRAL GEA R
CLUTC H PLAT E
CLUTC H DIS C
DIFFERENTIA LHOUSINGCOVER
2. Instal l th e fina l drive n gear .
NOTE : Alig n th e mar k o n th e differentia l housin g
cove r wit h th e mar k o n th e fina l drive n gear .
FINALDRIVE NGEAR
MAR K
MAR K
3. Instal l th e 10 2 m m washer , clutc h discs , clutc h
plates , an d 11 2 m m thrus t shim .
NOTE :
• Lubricat e th e clutc h disc s wit h transmissio n fluid .
• Positio n th e 11 2 m m thrus t shi m wit h th e
thicknes s siz e mar k facin g awa y fro m th e clutc h
discs .
Thicknes s Siz eMar k
CLUTC H PLATE S 11
2 m m THRUS T
SHIM
CLUTC H DISC S
10 2 m m WASHE R
4. Instal l th e 6 0 m m washer , sprin g plate , an d stoppe r
plate .
STOPPE R PLAT E
SPRING PLAT E
6 0 m m WASHE R
DIFFERENTIA LHOUSING
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Differential
Reassembl y
5. Instal l th e specia l tool s o n th e stoppe r plat e a s
shown .
CLUTC H SPRIN GCOMPRESSO RATTACHMENT07LAE-PX40100
STOPPER PLAT E
CLUTC H SPRIN GCOMPRESSO RATTACHMENT07GAE-PG40200
CLUTCH SPRIN GCOMPRESSO RBOLT ASSEMBL Y07HAE-PL50100
6. Compres s th e sprin g plate , the n instal l th e stoppe r
clip.
7. Instal l th e differentia l housing .
NOTE : Alig n th e finger s o f th e clutc h plate s an d
clutc h discs .
DIFFERENTIA L HOUSIN G
Align th e fingers .
8. Mak e sur e th e differentia l housin g touche s th e fina l
drive n gear .
DIFFERENTIA LHOUSING
CLUTC H PLAT E
Touchin g
FINAL DRIVE N GEA R
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9. Hol d th e differentia l i n a benc h vis e usin g a specia l
tool , the n instal l th e differentia l housin g mountin g
bolts.
NOTE : Tighte n th e bolt s in a crisscros s patter n in
severa l steps .
8 x 1. 0 m m SPECIA L BOLT S
4 0 N- m (4. 0 kg-m , 2 9 Ib-ft )
BENC H
VIS E
DIFFERENTIAL
INSPECTIO N TOOL S
07MAJ - PR90100
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Oil Seal

Removal

1. Remove the differential assembly.

2. Remove the oil seal from the transmission housing.

OIL SEAL

Replace.
TRANSMISSION

HOUSING

3. Remove the oil seal from the torque converter

housing.

OIL SEAL

Replace.
TORQUE CONVERTER

HOUSINGProCarManuals.com

Bearing Preload

Adjustment

NOTE: If any of the items listed below are replaced, the

bearing preload must be adjusted.

TRANSMISSION HOUSING

TORQUE CONVERTER HOUSING

DIFFERENTIAL

TAPERED ROLLER BEARING and OUTER RACE

75 mm THRUST SHIM

90 mm WASHER

OIL GUIDE RING

1. Remove the bearing outer race and 75 mm thrust

shim from the transmission housing by prying up

on the bearing outer race or by heating the housing

to about 212°F (100°C).

CAUTION: Do not reuse the thrust shim if the

outer race was pried out.

NOTE:

• If the outer race was removed by heating the

case, let the transmission cool to room tempera-

ture before adjusting the bearing preload.

• Do not heat the transmission housing in excess

of 212°F (100°C).

• Replace the bearing with a new one whenever

the outer race is replaced.

• Repeat on the torque converter side.ProCarManuals.com

2. Instal l th e standar d shi m an d bearin g oute r rac e in -
t o th e transmissio n housin g usin g th e specia l tool s
a s shown .
CAUTION : D o no t us e mor e tha n on e shi m to ad -
jus t th e bearin g preload .
NOTE:
• Instal l th e bearin g oute r rac e squarely .
• Chec k tha t ther e i s n o clearanc e betwee n th e
bearin g oute r race , shim , an d transmissio n
housing .
DRIVER07749-0010000 ATTACHMEN T72 x 7 5 m m07746-0010600
BEARIN GOUTERRACE
75 m m THRUS TSHIM
3. Lubricat e th e tapere d rolle r bearin g wit h transmis -
sio n fluid , the n instal l th e differential .
4 . Instal l th e transmissio n housing .
NOTE : D o no t instal l th e mainshaft , countershaft ,
revers e idl e gea r shaft , an d secondar y shaft .
Torque : 5 5 N- m (5. 5 kg-m , 4 0 Ib-ft )
5. Rotat e th e differentia l assembl y i n bot h direction s
t o sea t th e bearings .
7
5 m m THRUS T SHIM :
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Bearing Preloa d
Adjustmen t
6. Measur e th e startin g torqu e o f th e differentia l
assembl y wit h a specia l too l an d a torqu e wrenc h
a s shown .
NOTE : Measur e th e bearin g preloa d a t norma l
roo m temperatur e i n bot h directions .
Standard:
3.3-4.5 N-m (33-45 kg-cm, 29-39 Ib-in)
TORQU E WRENC H
DIFFERENTIA LINSPECTION TOOL S07MAJ-PR90100
7. I f th e bearin g preloa d i s no t withi n th e standard ,
selec t th e shi m tha t wil l giv e yo u th e correc t
preload , an d recheck .
NOTE : Changin g on e o f th e shim s t o th e nex t siz e
wil l increas e o r decreas e preloa d abou t 0.3—0. 4
N-m (3- 4 kg-cm , 2.60-3.4 7 Ib-in) .
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