Gearbox Primary Shaft — Check (Mitsubishi Colt 5)

Contents: Primary shaft ⤓ Needle bearing ⤓ Synchronizer ring ⤓ Gear shift clutch and synchronizer…⤓ Drive gears ⤓

Primary shaft

1. Check the outer surface A of the primary shaft where the needle bearing is installed for damage, excessive wear, or pitting (Figure 11.25).

Figure 11.25. Check the outer surface A of the primary shaft where the needle bearing is installed for damage, excessive wear, and pitting

2. Check the keyways for damage and wear.

Needle bearing

3. Assemble the needle bearing with the shaft or bearing shell and gear and check that the needle bearing rotates smoothly and without wobbling.

4. Check the needle bearing separator for deformation (Figure 11.26).

Figure 11.26. Check the needle bearing separator for deformation

Synchronizer ring

5. Check the coupling ring gear for damage and breaks. Check the inner surface for damage, wear and thread deformation (Figure 11.27).

Figure 11.27. Check the coupling ring gear for damage and breaks. Check the inner surface for damage, wear and thread deformation

6. Press the synchronizer ring to the toothed ring of the drive gear and check the gap A (Figure 11.28). Nominal value: 0.5 mm.

Figure 11.28. Press the synchronizer ring against the pinion gear and check the clearance A

Gear shift clutch and synchronizer hub

7. Assemble the engagement sleeve and synchronizer hub together and check that they slide smoothly inside each other (Figure 11.29).

Figure 11.29. Assemble the engagement sleeve and synchronizer hub together and check that they slide smoothly into each other

8. Make sure that the clutch is not damaged on the inside, front and rear.

9. Check the synchronizer hub on both sides for wear (contact surface with drive gears).