Nissan Micra K11 silhouetteK11

CHARGING SYSTEM — Alternator — Removal / Refitting (cars with P/S and/or A/C)

EL-36prose procedure

Removal sequence assumes P/S and/or A/C are fitted — single serpentine belt routing means alternator can only come off after the idler is slackened. Cars without P/S or A/C use a different procedure (likely simpler V-belt).

Continued from EL-35

Removal (for cars fitted with Power Steering and/or Air Conditioning)

  1. 1
    Remove battery negative lead from battery.
  2. 2
    From beneath car remove front and RHS splash guards.
  3. 3
    Loosen idler pulley nut (17 mm).
    Front-of-engine pulley layout — Crankshaft Pulley, Idler Pulley Nut, Compressor Pulley and Drive Belt visible from beneath.
    UEL035
  4. 4
    Slacken belt by turning adjusting bolt clockwise (access from topside of engine - 12 mm).
    Belt routing schematic — Crankshaft Pulley → Idler Pulley (with adjusting bolt) → Alternator Pulley → Compressor Pulley. Idler pulley nut torque 25.5-32.5 N·m (2.6-3.3 kg-m).
    UEL036
  5. 5
    Remove power supply cable.
  6. 6
    Disconnect harness connector.
  7. 7
    Remove lower alternator mounting bolts (2 x 14 mm).
    Alternator on engine showing upper and lower mounting-bolt torques 37-50 N·m (3.8-5.1 kg-m) each.
    UEL037
  8. 8
    Remove upper alternator mounting bolt (14 mm) and remove alternator.

Refitting

Idler pulley nut
25.5 - 32.5N·m (2.6 - 3.3 kg-m)
Alternator mounting bolts (upper + lower)
37 - 50N·m (3.8 - 5.1 kg-m)
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See also

MA section (belt tensioning)

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