Mazda MX-5 NA silhouetteMX-5 NA

Thrust lock washer / Mainshaft rear bearing / Countershaft rear bearing

J-36prose procedure

Thrust lock washer

  1. 1
    Insert the steel ball and the thrust lock washer for 5th gear.
    Mainshaft assembly with 5th gear showing the steel ball and thrust lock washer installation area.
    97U0J1-060
  2. 2
    Install the C-washers and hold them with the retaining ring.
  3. 3
    Measure the clearance between the thrust lock washer and C-washers (5th gear end play). If the end play is not within specification, adjust the clearance by installing the correct thrust lock washer.
    Measurement of clearance between thrust lock washer and C-washers (5th gear end play) using a feeler gauge on the mainshaft assembly.
    05U0JX-040
Standard play
0.1—0.3mm (0.004—0.012 in)
Thrust lock washer thickness
6.2 (0.244 in), 6.4 (0.252 in), 6.5 (0.256 in), 6.6 (0.260 in)mm

Mainshaft rear bearing

  1. 1
    Drive on the mainshaft rear bearing with the SST. Install the C-washers, retaining ring, and washer. Secure them with a new snap ring.
    SST (part 49 1243 465A) being used to drive the mainshaft rear bearing onto the mainshaft. Shows the slide-hammer-style installer tool engaged with the bearing.
    97U0J1-062
  2. 2
    Measure the clearance between the C-washers and washer. If end play is not within specification, adjust the clearance by installing the proper C-washers.
    Measurement of clearance between C-washers and washer on the mainshaft using a feeler gauge.
    05U0JX-041
Standard play
0—0.1mm (0—0.004 in)
C-washer thickness
2.9 (0.114 in), 3.0 (0.118 in), 3.1 (0.122 in), 3.2 (0.126 in)mm

Countershaft rear bearing

Drive the countershaft rear bearing onto the countershaft with the SST.

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