Mazda MX-5 NA silhouetteMX-5 NA

TRANSMISSION — Disassembly notes (Countershaft rear bearing, Locknut, Main drive gear bearing, Countershaft front bearing, Bearing housing assembly)

J-18prose procedure

M/T

Continued from J-17

Countershaft rear bearing

Remove the countershaft rear bearing with the SST.

Locknut (Mainshaft)

Mainshaft locknut disassembly

  1. 1
    Shift the clutch hub sleeves to first gear and reverse gear to put the gears in the double-engaged condition.
    Do not reuse the locknut.
    Do not damage the mainshaft and clutch hub assembly.
    Locknut removal using SST 49 1243 465A (wrench/holder). Hands apply force via the SST to uncrimp/remove the mainshaft locknut while the assembly is held in a vise.
    05U0JX-019
  2. 2
    Use a suitable tool to uncrimp the tabs of the locknut.
    Use pads in the vise to prevent damaging the bearing housing.
  3. 3
    Secure the bearing housing in a vise.
    Mainshaft assembly held vertically in a vise with copper hammer being applied — illustrates securing the bearing housing in vise and removing the locknut.
    97U0J1-024
  4. 4
    Remove the locknut with the SST.

Main drive gear bearing

Remove the main drive gear bearing with a suitable pipe.

Countershaft front bearing

Remove the countershaft front bearing with the SST.

Bearing housing assembly

Remove the bearing housing by lightly tapping the countershaft with a copper hammer.
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