1997 ACURA NSX service

5. Measure the clearance between the shift fork and

shift piece.

6. If the clearance exceeds the service limit, measure

the width of the shift piece.

If the width of the shift piece is less than the stan-

dard, replace the shift piece with a new one.

If the width of the shift piece is within the standard,

replace the shift pieces or shift forks with a new

one.ProCarManuals.com

Shift Fork, Synchro

Sleeve

Clearance Inspection

1. Measure the clearance between each shift fork and

its matching synchro sleeve..

2. If the clearance exceeds the service limit, measure

the width of the shift fork fingers.

If the width of the shift fork fingers is less than the

standard, replace the shift fork with a new one.

If the width of the shift fork fingers is within the

standard, replace the synchro sleeve with a new

one. The synchro sleeve and synchro hub should be

replaced as a set.ProCarManuals.com

Mainshaft Assembly

Clearance Inspection

1. Measure the clearance between 2nd and 3rd gears.

Standard: 0.06 - 0.19 mm

(0.002 - 0.007 in)

Service Limit: 0.3 mm (0.012 in)
3. Measure the clearance between 4th gear and the

spacer collar.

Standard: 0.06 - 0.19 mm

(0.002 - 0.007 in)

Service Limit: 0.3 mm (0.012 in)

2. If the
clearance exceeds
the
service
limit,
measure

the thickness of 3rd gear.

If the
thickness
of 3rd
gear
is
less than
the
service
limit,

replace 3rd gear with a new one.

If the thickness of 3rd gear is within the service limit,

replace the 3rd/4th synchro hub with a new one.
If the thickness of 4th gear is less than the service

limit, replace 4th gear with a new one.

If the thickness of 4th gear is within the service

limit, replace the 3rd/4th synchro hub with a new

one.
4. If the clearance exceeds the service limit, measure

on the spacer collar.

5. If is
less than
the
service
limit,
replace

the spacer collar with a new one.

If is within the service limit, measure

the thickness of 4th gear.ProCarManuals.com

6. Measure the clearance between the spacer collar

and 5th gear.
9. Measure the clearance between the distance collar

and 6th gear.

10. If the clearance exceeds the service limit, measure

on the distance collar.

11. If is less than the service limit, replace

the distance collar with a new one.

If is within the service limit, measure

thickness of 5th gear.

If the thickness of 6th gear is less than the service

limit, replace 6th gear with a new one.

If the thickness of 6th gear is within the service limit,

replace the 5th/6th synchro hub with a new one.
If the thickness of 5th gear is less than the service

limit, replace 5th gear with a new one.

If the thickness of 5th gear is within the service limit,

replace the 5th/6th synchro hub with a new one.
8. If is less than the service limit, replace

the spacer collar with a new one.

If is within the service limit, measure

thickness of 5th gear.
7. If the clearance exceeds the service limit, measure

on the spacer collar.ProCarManuals.com

Countershaft Assembly

Inspection

1. Inspect the gear surfaces and bearing surfaces for

wear and damage, then measure the countershaft

at points A and B inspect oil passages for clogging.

If any part of the countershaft is less than the ser-

vice limit, replace it with a new one.

2. Support the countershaft at both ends, and inspect

for runout.

If the runout exceeds the service limit, replace the

countershaft with a new one.ProCarManuals.com

If the clearance is less than the service limit, replace

the synchro ring and synchro cone.
Synchro Ring, Gear

Inspection

1. Inspection the synchro ring and gear.

A : Inspect the inside of the synchro ring for wear.

B : Inspect the synchro sleeve teeth and matching

teeth on the synchro ring for wear (rounded off).

C : Inspect the synchro sleeve teeth and matching

teeth on the gear for wear (rounded off).

D : Inspect the gear hub thrust surface for wear.

E : Inspect the cone surface for wear and rough-

ness.

F : Inspect the teeth on all gears for uneven wear,

scoring, gaining, and cracks.

2. Coat the cone surface of the gear with oil, and place

the synchro ring on the matching gear. Rotate the

synchro ring, making sure that it does not slip.

Measure the clearance between the synchro ring

and gear all the way around. Hold the synchro ring

against the gear evenly while measuring the clear-

ance.ProCarManuals.com

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

SRS component s ar e locate d i n thi s area . Revie w th e SR S componen t locations , precautions , an d procedure s i n th e SR S
sectio n 24 befor e performin g repair s o r service .
1 . Remov e th e sea t bac k panel s (se e sectio n 20 ).
2 . Remov e th e connecto r holde r fro m th e TC S contro l unit , an d disconnec t th e antenn a lead .
3 . Remov e th e TC S contro l unit .
NOTE : D o no t disconnec t th e connector s fro m th e TC S contro l unit .
Troubleshootin g Procedure s
4. Disconnec t th e B (22P ) connecto r fro m th e TCM , the n remov e th e TCM .
NOTE : D o no t disconnec t th e A (26P ) connecto r fro m th e TC M whil e removin g th e TCM .
ProCarManuals.com