Honda Civic. Manual — part 871

Fig. 99: Exploded View Of Shift Fork
Courtesy of AMERICAN HONDA MOTOR CO., INC.

MAINSHAFT ASSEMBLY CLEARANCE INSPECTION

1. Support the bearing inner race with an appropriate sized socket (A), and push

down on the mainshaft (B).

contact surfaces.

NOTE:

If replacement is required, always replace the synchro
sleeve and synchro hub as a set.

2008 Honda Civic LX

2006-08 TRANSMISSION Manual Transmission (6-Speed)(Except Hybrid) - Civic

Fig. 100: Identifying Socket And Mainshaft
Courtesy of AMERICAN HONDA MOTOR CO., INC.

2. Measure the clearance between 2nd gear (C) and 3rd gear (D) with a feeler

gauge (E).

If the clearance is more than the service limit, go to step 3.

If the clearance is within the service limit, go to step 4.

Standard: 0.06-0.16 mm (0.002-0.006 in.) Service Limit: 0.25 mm (0.010
in.)

3. Measure the thickness of 3rd gear.

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

If the thickness is within the service limit, replace the 3rd/4th synchro hub
and 3rd/4th synchro sleeve as a set.

Standard: 23.92-23.97 mm (0.941-0.944 in.) Service Limit: 23.80 mm
(0.937 in.)

Fig. 101: Identifying Thickness Of 3rd Gear
Courtesy of AMERICAN HONDA MOTOR CO., INC.

2008 Honda Civic LX

2006-08 TRANSMISSION Manual Transmission (6-Speed)(Except Hybrid) - Civic

4. Measure the clearance between 4th gear (A) and the distance collar (B) with a

dial indicator (C).

If the clearance is more than the service limit, go to step 5.

If the clearance is within the service limit, go to step 7.

Standard: 0.06-0.16 mm (0.002-0.006 in.) Service Limit: 0.25 mm (0.010
in.)

Fig. 102: Identifying 4th Gear, Distance Collar And Dial Indicator
Courtesy of AMERICAN HONDA MOTOR CO., INC.

5. Measure the length (1) of the distance collar as shown.

If the length (1) is not within the standard, replace the distance collar.

If the length (1) is within the standard, go to step 6.

Standard: 24.03-24.08 mm (0.946-0.948 in.)

Fig. 103: Identifying Length Of Distance Collar
Courtesy of AMERICAN HONDA MOTOR CO., INC.

2008 Honda Civic LX

2006-08 TRANSMISSION Manual Transmission (6-Speed)(Except Hybrid) - Civic

6. Measure the thickness of 4th gear.

If the thickness is less than the service limit, replace 4th gear.

If the thickness is within the service limit, replace the 3rd/4th synchro hub
and 3rd/4th synchro sleeve as a set.

Standard: 23.92-23.97 mm (0.941-0.944 in.) Service Limit: 23.80 mm
(0.937 in.)

Fig. 104: Identifying Thickness Of 4th Gear
Courtesy of AMERICAN HONDA MOTOR CO., INC.

7. Measure the clearance between the distance collar (A) and 5th gear (B) with a

dial indicator (C).

If the clearance is more than the service limit, go to step 8.

If the clearance is within the service limit, go to step 10.

Standard: 0.06-0.16 mm (0.002-0.006 in.) Service Limit: 0.25 mm (0.010
in.)

Fig. 105: Identifying Distance Collar, 5th Gear And Dial Indicator

2008 Honda Civic LX

2006-08 TRANSMISSION Manual Transmission (6-Speed)(Except Hybrid) - Civic