Acura CSX. Manual — part 221

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Standard:
A Ball Bearing Contact Area (Transmission

Housing Side):

27.987

28.000 mm (1.1018

1.1024 in.)

B 4th/5th Gear Distance Collar Contact Area:

31.984

32.000 mm (1.2592

1.2598 in.)

C Needle Bearing Contact Area:

38.984

39.000 mm (1.5348

1.5354 in.)

D Ball Bearing Contact Area (Clutch Housing Side):

27.977

27.990 mm (1.1015

1.1020 in.)

E Bushing Contact Area:

20.80

20.85 mm (0.819

0.821 in.)

Service Limit:
A:

27.93 mm (1.100 in.)

B:

31.93 mm (1.257 in.)

C:

38.93 mm (1.533 in.)

D:

27.92 mm (1.099 in.)

E:

20.75 mm (0.817 in.)

Standard:

0.02 mm (0.001 in.) max.

Service Limit: 0.05 mm (0.002 in.)

13-112

Manual Transmission

Mainshaft Inspection

E

D

C

B

A

1. Inspect the gear and bearing contact areas for wear

and damage, then measure the mainshaft at points
A, B, C, D, and E. If any part of the mainshaft is less
than the service limit, replace it.

2. Inspect the runout by supporting both ends of the

mainshaft. Then rotate the mainshaft two complete
turns while measuring with a dial gauge. If the
runout exceeds the service limit, replace the
mainshaft.

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Exploded View

13-113

Mainshaft Reassembly

4TH/5TH GEAR DISTANCE COLLAR

SYNCHRO
SPRING

SYNCHRO SPRING

ANGULAR BALL BEARING

SYNCHRO SPRING

NEEDLE BEARING

MAINSHAFT

SYNCHRO SPRING

NEEDLE BEARING

SYNCHRO RING

SYNCHRO RING

3RD/4TH
SYNCHRO SLEEVE

3RD/4TH
SYNCHRO HUB

INNER RING*

SYNCHRO RING*

SYNCHRO CONE*

NEEDLE BEARING

5TH/6TH SYNCHRO SLEEVE

5TH/6TH SYNCHRO HUB

5TH GEAR

4TH GEAR

SYNCHRO RING*

INNER RING*

SYNCHRO CONE*

6TH GEAR
DISTANCE COLLAR

3RD GEAR

6TH GEAR

Check for wear and operation.
Note the direction
of installation.

Check for wear and operation.

Check for wear and operation.

Note the direction
of installation.

Note the direction
of installation.

Check for wear and operation.

*: The components of the double cone synchro assembly.

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Special Tools Required

13-114

Manual Transmission

A

B

C

D

A

B

C

A

B

C

B
07746-0030100

A

• Inner driver handle, 40 mm 07746-0030100
• Inner bearing driver attachment, 30 mm

07746-0030300

NOTE: Refer to the Exploded View, as needed, during
this procedure.

1. Clean all parts in solvent, dry them, and apply MTF

to all contact surfaces.

2. Install the needle bearing (A) and 3rd gear (B) on

the mainshaft (C).

3. Install the double cone synchro assembly (A) by

aligning the synchro cone fingers (B) with the holes
(C) in 3rd gear, then install the synchro spring (D).

4. Install the 3rd/4th synchro hub (A) by aligning the

synchro ring fingers (B) with the grooves (C) in the
3rd/4th synchro hub.

5. Press on the 3rd/4th synchro hub (A) using the

40 mm inner driver handle (B) and a press.

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13-115

B

A

D

A

C

B

A

C

B

A

D

E

B

C

6. Install the 3rd/4th synchro sleeve (A) by aligning

the stops (B) of the 3rd/4th synchro sleeve and the
3rd/4th synchro hub. After installing, check the
operation of the 3rd/4th synchro hub set.

7. Install the double cone synchro assembly (A) with

the synchro spring (B) by aligning the synchro ring
fingers (C) with the grooves (D) in the 3rd/4th
synchro hub.

8. Install 4th gear (A) by aligning the synchro cone

fingers (B) with the holes (C) in 4th gear.

9. Install the 4th/5th gear distance collar (A) with the

needle bearings (B), then install 5th gear (C).

10. Install the synchro ring (D) with the synchro spring

(E) onto 5th gear.

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