Valve Body: Service and Repair
ON-VEHICLE SERVICE
Control Valve
REMOVAL
1.Remove drain plug from oil pan and then drain the CVT fluid.
2.Remove drain plug gasket.
3.Disconnect battery cable from negative terminal. Removal and Replacement (MR-20DE) or Removal and Replacement (QR-25DE).
4.Disconnect the CVT unit connector. Procedure For CVT Unit Connector.
5.Remove the snap ring (1) from the CVT unit connector (A).
6.Press the CVT unit connector (A) into the transaxle case.
CAUTION:
Never damage the CVT unit connector.
NOTE:
Clean around the connector to prevent foreign materials from entering into the transaxle case.
7.Remove the oil pan bolts, and then remove the oil pan and oil pan gasket.
8.Remove the magnets from the oil pan.
9.Remove the lock nut (1) and washer (2), and then remove the manual plate (3).
10.Remove the collar (4) from the manual shaft (A).
CAUTION:
Never drop the collar.
11.Disconnect the connectors (A) and (B).
12.Remove the oil strainer assembly bolts (A) and (B), and then remove the oil strainer assembly (1).
13.Remove O-ring from oil strainer assembly.
14.Remove the bracket (1).
15.Remove the control valve bolts (A) and (B), and then remove the control valve from the transaxle case.
CAUTION:
Never drop the control valve, ratio control valve and manual shaft.
16.Remove CVT unit connector (A) from the transaxle case inside.
17.Remove the lip seal (1) from the transaxle case.
INSTALLATION
1.Install the lip seal (1) to the transaxle case.
CAUTION:
Do not reuse lip seal.
2.Install the CVT unit connector (A) to the transaxle case.
CAUTION:
Connect the CVT unit connector with the stopper facing up, and then press in until it clicks.
3.Press in the ratio control valve (B) in the (black arrow) direction, and then secure the linkage in the position shown with the suitable tool (A) from the back of control valve through the hole to hold in place.
4.Check that one end of linkage engages with the step motor end (C) and that the linkage is in the direction shown.
5.Install the control valve to the transaxle case.
CAUTION:
- Never drop the suitable tool. If it is dropped, repeat the installation procedure from step 3.
- Never pinch the harness into between the control valve and the transaxle case.
6.Secure the control valve using the control valve bolts (A) and (B).
White arrow indicates : Vehicle front
7.Pull the suitable tool out.
8.Connect the connectors (A) and (B).
CAUTION:
- Never pinch the harness into between the control valve and the transaxle case.
- Securely insert the connector until it clicks and locks.
9.Install the bracket (1).
10.Install O-ring to oil strainer assembly.
CAUTION:
- Do not reuse O-ring.
- Apply CVT fluid NS-2 to O-ring.
11.Install the oil strainer assembly (1) using the oil strainer assembly bolts (A) and (B).
NOTE:
Remove the bracket and adjust the position again if the bolt hole positions are not aligned.
12.Install the collar to the manual shaft.
CAUTION:
Never drop the collar.
13.Install the manual plate (1) while aligning with the groove (A) of the manual shaft.
CAUTION:
Assemble the manual plate while aligning its end with the cutout (black arrow) of the manual valve.
White arrow indicates : Vehicle front
14.Install the washer (2) and the lock-nut (3), and then tighten to the specified torque.
15.Install the snap ring (1) to the CVT unit connector (A).
16.Connect the CVT unit connector. Procedure For CVT Unit Connector.
17.Install the magnets while aligning them with the convex side of oil pan.
CAUTION:
Completely eliminate the iron powder from the magnet mounting area of oil pan and the magnet.
18.Install the oil pan to the transaxle case with the following procedure.
a.Install the oil pan gasket to the oil pan.
CAUTION:
- Completely wipe out any moisture, oil, and old gasket from the oil pan gasket mating surface and bolt hole of oil pan and transaxle case.
- Never reuse oil pan gasket.
b.Install the oil pan assembly to the transaxle case, and then temporarily tighten the oil pan bolt.
CAUTION:
Do not reuse oil pan bolts.
c.Tighten the oil pan bolts in the order shown to the specified torque.
d.Tighten the oil pan bolts again clockwise from (1) shown to the specified torque.
19.Install drain plug gasket to drain plug.
CAUTION:
Do not reuse drain plug gasket.
20.Install drain plug to oil pan.
21.Fill CVT fluid from CVT fluid charging pipe to the specified level.
Changing CVT Fluid.
CVT fluid type: General Specification.
Fluid capacity: General Specification.
CAUTION:
- Use only Genuine NISSAN CVT Fluid NS-2. Never mix with other fluid.
- Using CVT fluid other than Genuine NISSAN CVT Fluid NS-2 will deteriorate in driveability and
CVT durability, and may damage the CVT, which is not covered by the warranty.
- When filling CVT fluid, take care not to scatter heat generating parts such as exhaust.
- Sufficiently shake the container of CVT fluid before using.
- Delete CVT fluid deterioration date with CONSULT after changing CVT fluid. CVT Trouble Diagnosis.
22.Connect battery cable to negative terminal. Removal and Replacement
or Removal and Replacement.
23.With the engine warmed up, drive the vehicle in an urban area.
NOTE:
When ambient temperature is 20�C (68�F), it takes about 10 minutes for the CVT fluid to warm up to 50�
to 80�C (122� to 176�F).
24.Check CVT fluid level and condition. Procedures.
INSPECTION AFTER REMOVAL
Check oil pan for foreign material.
- If a large amount of worn material is found, clutch plate may be worn.
- If iron powder is found, bearings, gears, or clutch plates may be worn.
- If aluminum powder is found, bushing may be worn, or chips or burrs of aluminum casting parts may enter.
Check points where wear is found in all cases.
INSPECTION AFTER REMOVAL
Check the CVT fluid level and leakage. Procedures.
INSPECTION AFTER INSTALLATION
Erase the TCM data.
- Erase the CVT fluid degradation data. CVT Trouble Diagnosis.
- Erase the memory of EEPROM in the TCM. Service After Replacing TCM, Transaxle Assembly, Or Control Valve.