Mazda MX-5 NA silhouetteMX-5 NA

TRANSMISSION — Inspection (Synchronizer ring, Bearing, Reverse idler gear and shaft)

J-24prose procedure

M/T

Continued from J-23

Hub sleeve / shift fork clearance (continued)

  1. 4
    Measure the clearance between hub sleeve and shift fork.
    Hands using a feeler gauge to measure the clearance between the clutch hub sleeve and the shift fork.
    9MU0JX-060
Standard clearanceHub sleeve / shift fork
0.2—0.3mm (0.008—0.012 in)mm
MaximumHub sleeve / shift fork
0.5mm (0.020 in)mm

Synchronizer ring

Synchronizer ring inspection

  1. 1
    Inspect the individual synchronizer ring teeth for wear and cracks.
    Hands holding a synchronizer ring while inspecting the individual ring teeth and the taper surface for wear and cracks.
    05U0JX-067
  2. 2
    Inspect the taper surface for wear and cracks.
  3. 3
    Measure the clearance between synchronizer ring and flank surface of gear.
    Set the synchronizer ring squarely in the gear; then measure around the circumference.
    Hands using a feeler gauge to measure the clearance between the synchronizer ring and the flank surface of the gear, with the synchronizer ring seated squarely on the gear.
    9MU0JX-062
Standard clearanceSynchronizer ring / gear flank
1.5mm (0.059 in)mm
MinimumSynchronizer ring / gear flank
0.8mm (0.031 in)mm

Bearing

Inspect for damage and rough rotation.

Reverse idler gear and shaft

Reverse idler gear and shaft inspection

  1. 1
    Inspect the gear teeth for wear and cracks.
    Reverse idler gear and reverse idler shaft (with locating tab/key on the shaft).
    05U0JX-068
  2. 2
    Measure the clearance between the reverse idler gear bushing and shaft.
Standard clearanceReverse idler bushing / shaft
0.02—0.05mm (0.0008—0.0020 in)mm
MaximumReverse idler bushing / shaft
0.15mm (0.006 in)mm
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