1997 ACURA NSX Service Repair Manual

Clearance Inspection

1. Check the clearance between the transmission mat-

ing surface of the clutch housing and the oil pump

gear.
3. Check the radial clearance on the pump rotor.

2. Check the axial clearance on the pump rotor.
Inner Rotor-to-Outer Rotor Radial clearance

Standard: 0.14 mm (0.006 in) max.

Service Limit: 0.2 mm (0.008 in)

4. Check the radial clearance between the clutch hous-

ing and the outer rotor.

Clutch Housing-to-Rotor Radial clearance

Standard: 0.1 - 0.2 mm

(0.004-0.008 in)

Service Limit: 0.22 mm (0.009 in)
Standard: 0.3 - 0.8 mm (0.012 - 0.031 in)

Service Limit: 0.9 mm (0.035 in)

Clutch Housing-to-Rotor Axial clearance

Standard: 0.03-0.1 mm

(0.001 - 0.004 in)

Service Limit: 0.15 mm (0.006 in)ProCarManuals.com

Mainshaft Oi l Sea l (Clutc h Housing )
Replacemen t
1. Remov e th e releas e bearin g guid e cover , an d
releas e bearin g guide . 3
. Driv e a ne w oi l sea l fro m th e clutc h sid e usin g th e
specia l tool s a s shown .
DRIVER07749-001000 0
ATTACHMENT ,52 x 5 5 m m07746-001040 0
4. Instal l th e releas e bearin g guide , an d releas e bear -
in g guid e cover .
2
. Remov e th e oi l seal .
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Countershaft Bearin g (Clutc h Housing )
Replacemen t
1. Remov e th e bearin g retainin g plate .
3. Positio n th e oi l guid e plat e an d ne w needl e bearin g
i n th e bor e o f th e clutc h housing . Positio n th e nee -
dl e bearin g wit h th e oi l hol e facin g up .
4 . Driv e th e needl e bearin g usin g th e specia l tools .
2 . Remov e th e needl e bearin g wit h th e specia l tool ,
the n remov e th e oi l guid e plate .
ADJUSTABL E BEARIN G
PULLER , 25-40 mm07736-A01000 A
DRIVER07749-001000 0ATTACHMENT , 6 2 x 68 m m07746-001050 0
5. Instal l th e bearin g retainin g plate , an d stak e th e bol t
head s in th e groov e in th e bearin g retainin g plate .
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Mainshaft Thrust Shim

Adjustment

1. Remove the thrust shim and oil guide plate from the

transmission housing.

2. Install the mainshaft in the transmission housing.

Do not install the clutch housing side ball bearing.

3. Measure between the end of the

transmission housing and mainshaft. Use a straight

edge and feeler gauge, and measure at three loca-

tions and average the readings.
5. Select the proper thrust shim on the basis of the

following calculations. Do not use more than two

thrust shims.

4. Set the mainshaft ball bearing in the clutch hous-

ing, and measure distance between the sur-

faces of the clutch housing and the bearing in-

ner race. Use a straight edge and feeler gauge, and

measure at three locations and average the read-

ings. Do not install the spring washer.ProCarManuals.com

NOTE: Clea n al l th e part s thoroughl y befor e installation .
6 . Instal l th e oi l guid e plat e an d thrus t shi m int o th e
transmissio n housing .
DRIVER, 4 0 m m I.D .07746 -003010 0
7. Instal l th e bal l bearin g ont o th e mainshaf t usin g th e
specia l tools .
ATTACHMENT , 3 5 m m I.D .
0774 6-003040 0
8. Instal l th e 7 5 m m sprin g washe r an d mainshaf t
assembl y int o th e clutc h housing .
9. Instal l th e transmissio n housing .
Torque: 4 4 N- m (4. 5 kgf-m , 3 3 Ibf-ft )
10. Chec k th e thrus t clearanc e in th e manne r describe d
below . Carr y ou t th e measuremen t a t norma l roo m
temperature .
a . Slid e th e mainshaf t bas e ove r th e mainshaft ,
b . Attac h th e mainshaf t holde r t o th e mainshaf t a s
follows : f
. Tur n th e mainshaf t holde r bol t clockwise ; sto p
turnin g whe n th e dia l gaug e ha s reache d it s
maximu m movement . Th e readin g o n th e dia l
gaug e is th e amoun t o f mainshaf t en d play .
CAUTION : Turnin g th e shaf t holde r bol t mor e
the n 6 0 degree s afte r th e needl e o f th e dia l
gaug e stop s movin g ma y damag e th e transmis -sion.
g. I f th e readin g i s withi n th e standard , th e
clearanc e is correct .
I f th e readin g i s no t withi n th e standard , rechec k
th e shi m thickness .
Standard : 0.1 4 - 0.2 1 m m (0.00 6 - 0.00 8 in )
•
Back-ou t th e mainshaf t holde r bol t an d
loose n th e tw o he x bolts .
• Fi t th e holde r ove r th e mainshaf t s o it s li p i s
toward s th e transmission .
• Alig n th e mainshaf t holder' s li p aroun d th e
groov e a t th e insid e o f th e mainshaf t splines ,
the n tighte n th e he x bolts .
MAINSHAF T BAS E07GA J-PG2013 0
MAINSHAF THOLDER07GAJ-PG2011 0
c. Sea t th e mainshaf t ful l b y tappin g it s en d
wit h a plasti c hammer ,
d. Threa d th e mainshaf t holde r bol t i n unti l i t
jus t contact s th e wid e surfac e o f th e mainshaf t
base.
e. Zer o a dia l gaug e o n th e en d o f th e mainshaft .
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Transmission

Reassembly

1. Install the oil seal, shift arm, and shift lever in the

transmission housing.
3. Install the oil seal, select arm, and select lever in the

clutch housing.

2. Install the shift detent spring and spring set plate.

4. Install the differential assembly into the clutch

housing.ProCarManuals.com

5. Install the spring washer, then insert the mainshaft

and countershaft into the shift forks and install

them as an assembly. Tape the mainshaft splines

before installation.
7. Install the reverse idle gear shaft assembly.

6. Install the change holder assembly in the clutch

housing. Place the interlock finger in the groove of

the select arm.
8. Shift the reverse synchro sleeve to the driven gear

side, then install the reverse shift fork assembly.ProCarManuals.com

Transmission

Reassembly (cont'd)

9. Install the reverse shift arm.
11. Install the dowel pins on the clutch housing.

12. Place the transmission housing over the clutch

housing, being careful to line up the shafts.

10. Apply liquid gasket to the surface of the transmis-

sion housing mating with the clutch housing as

shown, and note those items:

Use liquid gasket (P/N 08718 - 0001).

Remove any dirt or oil from the sealing surface.

Seal the entire circumference of the bolt holes to

prevent oil leakage.

If 20 minutes have passed after applying liquid

gasket, reapply it and assemble the housings.

After assembly, wait at least 30 minutes before

refilling with oil.
a. Place the shift lever as a shown.ProCarManuals.com