Nissan Sentra B18 (2020-2025) Service Manual: Transaxle Assembly

Exploded View

Exploded View

1.	CVT fluid charging pipe cap	2.	CVT fluid charging pipe	3.	O-ring
4.	Transaxle assembly	A.	Refer to Removal and Installation.

Removal and Installation

Removal and Installation

REMOVAL

Warning:

Do not remove the radiator cap when the engine is hot. Serious burns could occur from high pressure coolant escaping from the radiator. Wrap a thick cloth around the cap. Slowly turn a quarter turn to allow built-up pressure to escape. Carefully remove the cap by turning it all the way.

CAUTION:

• Perform when the engine is cold.

• When replacing the transaxle assembly, perform "ADDITIONAL SERVICE WHEN REPLACING TRANSAXLE ASSEMBLY". Refer to Description.

• When replacing TCM and transaxle assembly simultaneously, perform “ADDITIONAL SERVICE WHEN REPLACING TCM AND TRANSAXLE ASSEMBLY” before work. Refer to Description.

Note:

When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.

Remove CVT drain plug and drain CVT fluid.

CAUTION:

Do not reuse O-ring.

Remove engine and transaxle assembly. Refer to Removal and Installation.

Separate the engine from the transaxle assembly. Refer to Removal and Installation. Note:

Using paint, put matching marks on the drive plate and torque converter when removing the torque converter to drive plate nuts.

INSTALLATION

Note the following and installation is in the reverse order of removal.

CAUTION:

• Write down the serial number of the new transaxle assembly.

  

• When replacing an engine or transaxle you must make sure any dowels are installed correctly during re-assembly

• Improper alignment caused by missing dowels may cause vibration, oil leaks or breakage of drive train components.

• Do not reuse O-rings or copper sealing washers.

• When turning crankshaft, turn it clockwise as viewed from the front of the engine.

• When tightening the nuts for the torque converter while securing the crankshaft pulley bolt, be sure to confirm the tightening torque of the crankshaft pulley bolt. Refer to Exploded View.

• After converter is installed to drive plate, rotate crankshaft several turns to check that CVT rotates freely without binding.

• When installing the CVT to the engine, align the matching mark on the drive plate with the matching mark on the torque converter.

• When installing the drive plate to torque converter nuts, tighten them temporarily. Then tighten the nuts to the specified torque. Refer to Exploded View.

• Install the transaxle assembly and engine assembly mounting bolts according to the following standards.

  Note:

  Do not lubricate engine assembly mounting bolts.

  Bolt symbol	(A)	(B)	(C)
  Insertion direction	Transaxle to cylinder block	Cylinder block to transaxle	Oil pan to transaxle
  Quantity	1	3	4
  Bolt length “” mm (in)	55 (2.17)	50.5 (1.988)	50.5 (1.988)
  Tightening torque N·m (kg-m, ft-lb)	62.0 (6.3, 46)

  

After replacing transaxle assembly, perform "ADDITIONAL SERVICE WHEN REPLACING TRANSAXLE ASSEMBLY". Refer to Description.

Inspection and Adjustment

Inspection and Adjustment

INSPECTION BEFORE INSTALLATION

After inserting a torque converter to the CVT, check dimension (A) with in the reference value limit.

B	: Scale
C	: Straightedge

Dimension (A)

: Refer to Torque Converter.

INSPECTION AFTER INSTALLATION

Check the following items:

Start the engine and check visually that there is no leakage of CVT fluid and engine coolant.

For CVT position, refer to Inspection.

ADJUSTMENT AFTER INSTALLATION

Adjust the CVT fluid level. Refer to Adjustment.