NIARMADA Nissan Armada manuals & owner information
Nissan Armada owner resource

Manuals, service information and practical owner guidance.

Fast access to Nissan Armada manuals, operating instructions, maintenance references and technical information.

Browse manuals →
Nissan Armada manual library

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

Nissan Armada 2025-2026 Service and Repair Manual / Transmission & Driveline / Transaxle & Transmission. 9at: Ge9r01a / Transmission Assembly

2wd

Exploded View

Bracket A/T assembly Bracket
Bracket
: N·m (kg-m, ft-lb)

Removal and Installation

WARNING:

  • Jacking up or lift up the vehicle may the vehicle height to go down which cause a personal injury and/or damage to the air suspension component parts. Refer to Precaution for when Jacking and Lifting Up the vehicle with Electronic Air Suspension System.

REMOVAL

CAUTION:

  • When removing the A/T assembly from engine, first remove the crankshaft position sensor (POS) from the A/T assembly.

  • Be careful not to damage sensor edge.

  • When replacing A/T assembly, Perform "ADDITIONAL SERVICE WHEN REPLACING TRANSMISSION ASSEMBLY". Refer to Description.

Release the parking brake.

Activate the neutral hold mode. Refer to Neutral Hold Mode Indicator.

Ignition switch OFF.

NOTE:

After ignition switch OFF, confirm that the propeller shaft assembly can be turned.

Disconnect the battery cable from the negative terminal.

Remove front under cover. Refer to Removal and Installation.

Remove starter motor. Refer to Removal and Installation.

Drain engine coolant. Refer to ENGINE COOLANT : Draining.

Drain A/T fluid. Refer to Draining.

Remove water hoses from the A/T fluid warmer. Refer to Removal and Installation.

Remove A/T fluid warmer. Refer to Removal and Installation.

Remove A/T fluid cooler tubes from the A/T assembly. Refer to Removal and Installation.

Plug up openings such as the A/T fluid cooler tube holes.

Remove A/T air breather hose from the A/T assembly. Refer to Removal and Installation.

Remove heat shield mounting bolts and remove the heat shield. Refer to Removal and Installation.

Disconnect harness connector from control valve & TCM. Refer to Removal and Installation.

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

Remove rear propeller shaft. Refer to Removal and Installation.

Disconnect heated oxygen sensor harness connector and remove bracket. Refer to Removal and Installation.

Remove catalyst converter support bracket. Refer to Removal and Installation.

Remove Catalyst converter (bank 2). Refer to Removal and Installation.

Remove crankshaft position sensor. Refer to Removal and Installation.

CAUTION:

  • Never subject it to impact by dropping or hitting it.

  • Never disassemble.

  • Never allow metal filings, etc. to get on the sensor's front edge magnetic area.

  • Never place in an area affected by magnetism.

Remove rear plate cover. Refer to Exploded View.

Turn crankshaft, and remove the four tightening bolts () for drive plate and torque converter.

Using a suitable jack and Transmission jack adaptor (SST: NI–52940) (A), support the transmission assembly .

NOTE:

When installing Tool, it will support transmission assembly at locations shown.

Remove rear engine mounting cross member. Refer to Unit Removal & Installation.

Remove bolts fixing A/T assembly to engine.

*: Tightening the bolt with bracket. Refer to Exploded View.

Remove A/T assembly from the vehicle.

CAUTION:

  • Secure torque converter to prevent it from dropping.

  • Secure A/T assembly to a transmission jack.

INSTALLATION

Note the followings and Install in the reverse order of removal.

  • Check fitting of dowel pins ().

  • Align the positions of tightening bolts for drive plate with those of the torque converter, and temporarily tighten the bolts (). Then, tighten the bolts with the specified torque.

    NOTE:

    When tightening bolts, tighten the bolts using universal joints (A).

CAUTION:

  • Rotate crankshaft clockwise (as viewed from the crankshaft pulley side).

  • When tightening the tightening bolts for the torque converter after fixing the crankshaft pulley bolts, be sure to confirm the tightening torque of the crankshaft pulley bolts. Refer to Removal and Installation.

  • Rotate crankshaft several turns and check to be sure that transmission rotates freely without binding after converter is installed to drive plate.

Inspection and Adjustment

INSPECTION BEFORE INSTALLATION

Be sure to check dimension (A) to ensure it is within the reference value limit.

B : Scale
C : Straightedge
Dimension (A) : Refer to Torque Converter.

INSPECTION AFTER INSTALLATION

  • Start the engine and check visually that there is no leakage of ATF.

  • Check A/T position. Refer to Inspection.

ADJUSTMENT AFTER INSTALLATION

  • Adjust A/T fluid level. Refer to Adjustment.

  • When replaced A/T assembly, perform "ADDITIONAL SERVICE WHEN REPLACING TRANSMISSION ASSEMBLY". Refer to Description.

4wd

Exploded View

Bracket A/T assembly Bracket
Transfer assembly Bracket
: N·m (kg-m, ft-lb)

Removal and Installation

WARNING:

  • Jacking up or lift up the vehicle may the vehicle height to go down which cause a personal injury and/or damage to the air suspension component parts. Refer to Precaution for when Jacking and Lifting Up the vehicle with Electronic Air Suspension System.

REMOVAL

CAUTION:

  • When removing the A/T assembly from engine, first remove the crankshaft position sensor (POS) from the A/T assembly.

  • Be careful not to damage sensor edge.

  • When replacing A/T assembly, Perform "ADDITIONAL SERVICE WHEN REPLACING TRANSMISSION ASSEMBLY". Refer to Description.

Release the parking brake.

Activate the neutral hold mode. Refer to Neutral Hold Mode Indicator.

Ignition switch OFF.

NOTE:

After ignition switch OFF, confirm that the propeller shaft assembly can be turned.

Disconnect the battery cable from the negative terminal.

Remove front under cover. Refer to Removal and Installation.

Remove starter motor. Refer to Removal and Installation.

Drain engine coolant. Refer to ENGINE COOLANT : Draining.

Drain A/T fluid. Refer to Draining.

Remove water hoses from the A/T fluid warmer. Refer to Removal and Installation.

Remove A/T fluid warmer. Refer to Removal and Installation.

Remove A/T fluid cooler tubes from the A/T assembly. Refer to Removal and Installation.

Plug up openings such as the A/T fluid cooler tube holes.

Disconnect harness connector from transfer range position sensor.

  • Without "4L" switch (on 4WD shift switch) and differential lock system: Refer to Removal and Installation (Transfer: ATX93A).

  • With "4L" switch (on 4WD shift switch) and without differential lock system: Refer to Removal and Installation (Transfer: ATX93B).

  • With "4L" switch (on 4WD shift switch) and differential lock system: Refer to Removal and Installation (Transfer: ATX93C).

Remove A/T air breather hose from the A/T assembly. Refer to Removal and Installation.

Remove heat shield mounting bolts and remove the heat shield. Refer to Removal and Installation.

Disconnect harness connector from control valve & TCM. Refer to Removal and Installation.

Disconnect harness connector from transfer control actuator.

  • Without "4L" switch (on 4WD shift switch) and differential lock system: Refer to Removal and Installation (Transfer: ATX93A).

  • With "4L" switch (on 4WD shift switch) and without differential lock system: Refer to Removal and Installation (Transfer: ATX93B).

  • With "4L" switch (on 4WD shift switch) and differential lock system: Refer to Removal and Installation (Transfer: ATX93C).

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

Remove rear propeller shaft. Refer to Removal and Installation.

Remove front final drive assembly. Refer to Removal and Installation.

Disconnect heated oxygen sensor harness connector and remove bracket. Refer to Removal and Installation.

Remove catalyst converter support bracket. Refer to Removal and Installation.

Remove Catalyst converter (bank 2). Refer to Removal and Installation.

Remove crankshaft position sensor. Refer to Removal and Installation.

CAUTION:

  • Never subject it to impact by dropping or hitting it.

  • Never disassemble.

  • Never allow metal filings, etc. to get on the sensor's front edge magnetic area.

  • Never place in an area affected by magnetism.

Remove rear plate cover. Refer to Exploded View.

Turn crankshaft, and remove the four tightening bolts () for drive plate and torque converter.

Using a suitable jack and Transmission jack adaptor (SST: NI–52940) (A), support the transmission assembly .

NOTE:

When installing Tool, it will support transmission assembly at locations shown.

Support the transfer assembly with transmission jack.

Remove rear engine mounting cross member. Refer to Unit Removal & Installation.

Remove bolts fixing A/T assembly to engine.

*: Tightening the bolt with bracket. Refer to Exploded View.

Remove A/T assembly with transfer assembly from the vehicle.

CAUTION:

  • Secure torque converter to prevent it from dropping.

  • Secure A/T assembly to a transmission jack.

Remove transfer assembly from transmission assembly.

  • Without "4L" switch (on 4WD shift switch) and differential lock system: Refer to Removal and Installation (Transfer: ATX93A).

  • With "4L" switch (on 4WD shift switch) and without differential lock system: Refer to Removal and Installation (Transfer: ATX93B).

  • With "4L" switch (on 4WD shift switch) and differential lock system: Refer to Removal and Installation (Transfer: ATX93C).

INSTALLATION

Note the followings and Install in the reverse order of removal.

  • Check fitting of dowel pins ().

  • Align the positions of tightening bolts for drive plate with those of the torque converter, and temporarily tighten the bolts (). Then, tighten the bolts with the specified torque.

    NOTE:

    When tightening bolts, tighten the bolts using universal joints (A).

CAUTION:

  • Rotate crankshaft clockwise (as viewed from the crankshaft pulley side).

  • When tightening the tightening bolts for the torque converter after fixing the crankshaft pulley bolts, be sure to confirm the tightening torque of the crankshaft pulley bolts. Refer to Removal and Installation.

  • Rotate crankshaft several turns and check to be sure that transmission rotates freely without binding after converter is installed to drive plate.

Inspection and Adjustment

INSPECTION BEFORE INSTALLATION

Be sure to check dimension (A) to ensure it is within the reference value limit.

B : Scale
C : Straightedge
Dimension (A) : Refer to Torque Converter.

INSPECTION AFTER INSTALLATION

  • Start the engine and check visually that there is no leakage of ATF.

  • Check A/T position. Refer to Inspection.

ADJUSTMENT AFTER INSTALLATION

  • Adjust A/T fluid level. Refer to Adjustment.

  • When replaced A/T assembly, perform "ADDITIONAL SERVICE WHEN REPLACING TRANSMISSION ASSEMBLY". Refer to Description.

    Other materials

    Manual operation
    Basic information In the Nissan Armada, the electronic parking brake can also be controlled manually using the dedicated switch, allowing precise control in various driving and parking situations. To apply: When the Nissan Armada is completely stopped and the ignition switch is in the ON or ...

    Automatic Back Door Control Unit
    Removal and Installation REMOVALRemove luggage side lower finisher LH. Refer to Removal and Installation. Disconnect automatic back door control unit harness connector. Remove automatic back door control unit mounting nuts , and then remove automatic back door control unit . INSTALLATIONInstall in ...

    Nissanconnect Symptoms
    Symptom Table RELATED TO NAVIGATIONTrouble diagnosis chart by symptom Symptoms Check items Possible malfunction location/Action to take AV control unit does not start. Display is not indicated. AV control unit power supply and ground circuit. Refer to Diagnosis Procedure. Blue screen is d ...