Nissan Armada 2025-2026 Service and Repair Manual: Disassembly and Assembly

WARNING:

REMOVAL

CAUTION:

Never drain engine oil when the engine is hot to avoid the danger of being scalded.

Remove main muffler. Refer to EXHAUST SYSTEM : Removal & Installation.

Remove front propeller shaft. (4WD models) Refer to Removal and Installation.

Remove rear propeller shaft. Refer to following :

• 2WD models: Refer to Removal and Installation.

• 4WD models with rear final drive (R240): Refer to Removal and Installation.

• 4WD models with rear final drive [R240(DL)]: Refer to Removal and Installation.

Remove front final drive assembly. (4WD models) Refer to Removal and Installation.

Remove front stabilizer. Refer to Removal and Installation.

Remove A/T assembly. Refer to following:

• 2WD models: Refer to Removal and Installation.

• 4WD models: Refer to Removal and Installation.

Remove oil level gauge and oil level gauge guide.

Drain engine oil. Refer to Draining.

Remove oil filter. Refer to Removal and Installation.

Remove oil cooler.Refer to Removal and Installation.

Remove engine oil level sensor .

Remove oil pan (lower). Refer to Removal and Installation.

Remove engine oil pressure control solenoid valve .

Loosen mounting bolts in the order from 14 to 1 as shown in the figure using a power tool (commercial service tool) to remove.

: Engine front

• Insert the seal cutter [SST: KV10111100 (NI-37228)] between oil pan (upper) and lower cylinder block. Slide seal cutter by tapping on the side of tool with a hammer. Remove oil pan (upper).

  CAUTION:

  • Never damage the mating surfaces.

  • Never insert a screwdriver, because this damages the mating surfaces.

Remove O-ring from bottom of lower cylinder block .

: Engine front

INSTALLATION

CAUTION:

Do not reuse O-rings.

Install oil pan (upper) as follows:Use a scraper (A) to remove old liquid gasket from mating surfaces.

CAUTION:

Never scratch or damage the mating surfaces when cleaning off old liquid gasket.

• Also remove old liquid gasket from mating surface of lower cylinder block.

• Remove old liquid gasket from the bolt holes and threads.

Install new O-ring on the bottom of lower cylinder block .

CAUTION:

Do not reuse O-rings.

: Engine front

Apply a continuous bead of liquid gasket with the tube presser (commercial service tool) to the cylinder block mating surface of oil pan (upper) to a limited portion as shown in the figure.

: φ3.4 - 4.4 mm (0.134 - 0.173 in)

CAUTION:

• For bolt holes with marks (6 locations), apply liquid gasket outside the holes.

• Attaching should be done within 5 minutes after coating.

Install oil pan (upper).

CAUTION:

Never misalign both O-rings during installation.

• Tighten mounting bolts to the torque specified below in the order from 1 to 14 as shown in the figure.

  

  : 17.9 N·m (1.8 kg-m, 13 ft-lb)

  : Engine front

Install oil pan (lower). Refer to Removal and Installation.

Install oil pan drain plug.

• the figure of components on the prior page for installation direction of drain plug washer. Refer to Removal and Installation.

Install in the reverse order of removal after this step.

NOTE:

Wait at least 30 minutes after oil pan is installed before pouring engine oil.