Mazda MX-5 NA silhouetteMX-5 NA

CHARGING SYSTEM

G-16prose procedure

A/C-equipped routing diagram shown; P/S and A/C variants share spec rows.

Drive belt inspection (continued)

  1. 5
    Check the drive belt tension with a tension gauge.
    Belt tension can be measured between any pulleys.
    Belt routing diagram for A/C-equipped MX-5 showing the crank-shaft, alternator, idler and A/C compressor pulleys with arrows indicating tension check points. Labelled: ALTERNATOR, IDLER, CRANK-SHAFT, A/C. Header reads 'A/C EQUIPPED'.
    05U0BX-011
  2. 6
    Install the air intake pipe.

Tension

Drive belt tension N (kg, lb)

Alternator
New491—589 (50—60, 110—132)
Used422—491 (43—50, 95—110)
P/S, P/S + A/C
New491—589 (50—60, 110—132)
Used422—491 (43—50, 95—110)
A/C
New491—589 (50—60, 110—132)
Used422—491 (43—50, 95—110)

Adjustment

(1) Alternator belt

  1. 1
    If necessary, loosen the alternator bolts (A) and (B) and adjust the belt deflection by turning the adjusting bolt (C).
    Photo of alternator showing adjusting bolt (C) at top and the alternator mounting bolts (A) and (B). Labels A, B, C appear inside circles next to the respective fasteners.
    05U0BX-013
Tightening torque (A) — alternator bolt
19-25N·m
Tightening torque (B) — alternator bolt
37-52N·m

(2) P/S belt, P/S + A/C belt

  1. 1
    If necessary, loosen the P/S oil pump bolts (A) and (B) and nut (C), and adjust the belt deflection by turning the adjusting bolt (D).
    Photo of P/S pump area showing oil pump bolts (A), (B), nut (C), and adjusting bolt (D).
    05U0BX-014
Tightening torque (A) — P/S oil pump bolt
31-46N·m
Tightening torque (B) — P/S oil pump bolt
36-54N·m
Tightening torque (C) — P/S oil pump nut
19-25N·m

(3) A/C belt

  1. 1
    If necessary, loosen the locknut and adjust the belt deflection by turning the adjusting bolt.
    Photo of A/C compressor belt area with callouts ADJUSTING BOLT and LOCKNUT for the A/C belt tension adjustment.
    05U0BX-015
Tightening torque — A/C belt adjusting bolt/locknut
37-52N·m

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