Nissan Micra K11 silhouetteK11

CYLINDER BLOCK — Assembly: Piston (Supplement-V)

EM-5043prose procedure

Source typo 'pistong rings' preserved verbatim in sub-step a). The two 'Install new snap ring' bullets are duplicated verbatim in the source (one for each end of the pin hole — the substantive instruction is the second; the bullet repetition is preserved as printed).

Continued from EM-5042

Assembly

PISTON

Piston assembly

  1. •
    Align the direction of piston and connecting rod, the piston cloverleaf sits opposite the bearing halfshell retainers.
    Piston with connecting rod attached. Piston crown labelled 'Piston height type' (location of the printed-on type letter A/B/C) and 'Clover leaf' (the cloverleaf-shaped combustion-chamber recess). Connecting rod has 'Bearing retainers' callout pointing at the cap-side bearing locking-tab pocket. Indicates the cloverleaf must sit opposite the bearing halfshell retainers (i.e. the bearing tabs face the opposite side of the engine from the cloverleaf).
    NEM303
  2. •
    Install new snap ring on one side of piston pin hole.
  3. •
    Install new snap ring.
  4. •
    After assembling, ascertain that piston swings smoothly.
  5. •
    Confirm that the correct piston height type is used. Refer to "Inspection" (EM-5042).
  6. •
    Install piston rings with a suitable tool.
    a) When installing pistong rings, make sure that stamped mark "TOP" is facing top of piston.
    b) Align gaps of piston rings with intervals of 120°, as shown in illustration.
    Piston with three rings shown stacked — top compression ring, second compression ring, and oil ring (three components) — exploded next to the piston, with arrows showing how each ring is installed in its groove with the 'TOP' stamp facing up.
    NEM305
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See also

EM-5042 — Inspection (Determining the piston type)

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