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Nissan Armada 2025-2026 Service and Repair Manual: Piston

Nissan Armada 2025-2026 Service and Repair Manual / Engine / Engine Mechanical / Piston

Piston

DESCRIPTION

Selection points Selection parts Selection items Selection methods
Between cylinder block and crankshaft Main bearing

Main bearing grade

(bearing thickness) 		Determined by match of cylinder block bearing housing grade (inner diameter of housing) and crankshaft journal grade (outer diameter of journal)
Between crankshaft and connecting rod Connecting rod bearing Connecting rod bearing grade (bearing thickness) Combining service grades for connecting rod big end diameter and crankshaft pin outer diameter determine connecting rod bearing selection.
Between piston and connecting rod — — —

  • The identification grade stamped on each part is the grade for the dimension measured in new condition. This grade cannot apply to reused parts.

  • For reused or repaired parts, measure the dimension accurately. Determine the grade by comparing the measurement with the values of each selection table.

  • For details of the measurement method of each part, the reuse standards and the selection method of the selective fitting parts, refer to the text.

WHEN CYLINDER BLOCK IS REUSED

Measure the cylinder bore inner diameter. Refer to Inspection.

Determine the bore grade by comparing the measurement with the values under the cylinder bore inner diameter of the “PISTON SELECTION TABLE”.

: Front mark
: Two dimensional code

Select piston of the same grade.

PISTON SELECTION TABLE

Unit: mm (in)

Engine bank Bank1 Bank2
Cylinder bore inner diameter

86.000 - 86.015

(3.3858 - 3.3864)

86.000 - 86.015

(3.3858 - 3.3864)
Piston skirt diameter

85.965 - 85.980

(3.3844 -3.3850)

85.965 - 85.980

(3.3844 - 3.3850)

NOTE:

  • Piston is available together with piston pin as assembly.

  • No second grade mark is available on piston.

    Other materials

    Rear Bumper
    Exploded View Rear bumper side bracket LH Rear bumper bracket RH Rear bumper bracket LH Hands free sensor bracket (with hands free sensor models) Double-sided tape [t: 1.2 mm (0.047 in)] (with hands free sensor models) Rear bumper fascia Rear bumper molding LH Rear bumper fi ...

    Rear Side Spoiler
    Exploded View Rear side spoiler Double-sided tape [t: 2.5 mm (0.098 in)]     : Clip : Always replace after every disassembly. Removal and Installation REMOVALFully open back door. Remove rear combination lamp cover. Refer to Removal and Installation. Remove rear side spoile ...

    Front Door Pocket Lamp
    Exploded View Front door pocket lamp is integrated structure with front door finisher. For exploded view of front door finisher, refer to Exploded View. Replacement CAUTION: Disconnect the battery negative terminal or remove power circuit fuse when performing the operation for preventing electric ...