Nissan Armada 2025-2026 Service and Repair Manual: Removal & Installation

WARNING:

REMOVAL

Remove front cover. Refer to Removal & Installation.

Remove timing chain. Refer to Removal and Installation.

Remove fuel tube assembly. Refer to Removal and Installation.

Remove high pressure fuel pump. Refer to Removal & Installation.

Remove camshaft sprockets (INT and EXH).

• Secure hexagonal part of the camshaft using a suitable tool, loosen the mounting bolts of INT and EXH of camshaft sprocket (bank 1 and 2) and remove the camshaft sprockets.

  

Remove camshaft brackets.

• Mark camshafts, camshaft brackets and bolts so they are placed in the same position and direction for installation.

• Equally loosen camshaft bracket bolts in several steps in the order from 10 to 1 (bank 1 ), and for (bank 2 ), from 12 to 1 as shown in the figure.

: Engine front

Remove camshaft.

Remove valve lifter.

• Identify installation positions, and store them without mixing them up.

INSTALLATION

NOTE:

• If an intake camshaft or exhaust camshaft are removed, carry out the teach of “Electric IVT Control Actuator Position Learning. Refer to Work Procedure.

• If an intake camshaft sprocket or exhaust camshaft sprocket are removed, carry out the teach of “Electric IVT Control Actuator Position Learning. Refer to Work Procedure.

Install valve lifter.

• Install it in the original position.

Install camshafts.

• Follow your identification marks made during removal, or follow the identification marks that are present on new camshafts for proper placement and direction.

  

  : Engine front

  Bank	INT/EXH	Dowel pin	Paint marks			Identification mark
  			M1	M2	M3
  1	EXH	Yes	BLUE	NO	WHITE	NO
  	INT	Yes	BLUE	WHITE	NO	NO
  2	INT	Yes	BLUE	WHITE	NO	NO
  	EXH	Yes	BLUE	NO	WHITE	NO

• Install camshaft so that dowel pin on front end face are positioned as shown in the figure. (No. 1 cylinder TDC on its compression stroke)

  

  : Crankshaft key

  NOTE:

  Though camshaft does not stop at the portion as shown in the figure, for the placement of cam nose, it is generally accepted camshaft is placed for the same direction of the figure.

Install camshaft brackets.

	: No. 1
	: No. 2
	: No. 3
	: No. 4
	: Bank 1
	: Exhaust side
	: Intake side
	: Bank 2
	: Engine front

• Remove foreign material completely from camshaft bracket backside and from cylinder head installation face.

• Install camshaft bracket in original position and direction as shown in figure.

• Install camshaft brackets (No. 2 to 4) aligning the stamp marks as shown in the figure.

  

  	: Bank 1
  	: Bank 2
  	: Engine front

  NOTE:

  There are no identification marks indicating bank 1 and bank 2 for camshaft bracket (No. 1).

• Apply liquid gasket to mating surface of camshaft bracket (No. 1) as shown on both bank 1 and bank 2 .

  

  	: Engine front
  	: φ3.4 - 4.4 mm (0.134 - 0.173 in)

  CAUTION:

  Be sure to wipe off any excessive liquid gasket.

Tighten camshaft bracket bolts in the following steps, as shown in the figure.

	: Bank 1
	: Bank 2
	: Engine front

CAUTION:

Do not reuse washers.

Tighten No. 7 to 10 in numerical order as shown. (Bank1)

Tighten No. 7 to 14 in numerical order as shown. (Bank2)

: 1.96 N·m (0.20 kg-m, 17 in-lb)

Tighten No. 1 to 6 in numerical order as shown.

: 1.96 N·m (0.20 kg-m, 17 in-lb)

Tighten No. 1 to 10 in numerical order as shown. (Bank1)

Tighten No. 1 to 14 in numerical order as shown. (Bank2)

: 5.88 N·m (0.60 kg-m, 52 in-lb)

Tighten No. 1 to 10 in numerical order as shown. (Bank1)

Tighten No. 1 to 14 in numerical order as shown. (Bank2)

: 10.1 N·m (1.0 kg-m, 7 ft-lb)

Inspect and adjust the valve clearance. Refer to Adjustment.

Install in the reverse order of removal after this step.