TORQUE CONVERTER SERVICE
The torque converter should be replaced under any of the following conditions
- External leaks in the hub weld area.
- Converter hub is scored or damaged.
- Converter pilot is broken, damaged or fits poorly into crankshaft.
- Steel particles are found after flushing the cooler and cooler lines.
- Pump is damaged or steel particles are found in the converter.
- Vehicle has TCC shudder and/or no TCC apply. Replace only after all hydraulic and electrical diagnoses have been made. (Converter clutch material may be glazed.)
- Converter is contaminated with engine coolant containing antifreeze.
- Internal failure of stator roller clutch.
- Heavy clutch debris due to overheating (blue converter).
- Steel particles or clutch lining material found in fluid filter or on magnet when no internal parts in unit are worn or damaged - indicates that lining material came from converter.
The torque converter should not be replaced if
- The fluid has an odor, is discolored, and there is no evidence of metal or clutch facing particles.
- The threads in one or more of the converter bolt holes are damaged.
- Transaxle failure did not display evidence of damaged or worn internal parts, steel particles or clutch plate lining material in unit and inside the fluid filter.
- Vehicle has been exposed to high mileage (only). The exception may be where the torque converter clutch dampener plate lining has seen excess wear by vehicles operated in heavy and/or constant traffic, such as taxi, delivery or police use.
Torque Converter Clutch Solenoid Valve Control
The torque converter clutch solenoid valve is controlled by the TCM. The plunger closes the drain circuit during the "OFF" period, and opens the circuit during the "ON" period. If the percentage of OFF-time increases in one cycle, the pilot pressure drain time is reduced and pilot pressure remains high.
Scheme 14
The torque converter clutch piston is designed to slip to adjust the ratio of ON-OFF, thereby reducing lock-up shock.
Scheme 15
Scheme 16
Scheme 17
TORQUE CONVERTER CLUTCH SOLENOID VALVE
- Refer to " «REMOVAL»(ref-214136-S12951281622005123100000) ".
General Specifications
| Engine | QG18DE | |
|---|---|---|
| Automatic transaxle model | RE4F03B | |
| Automatic transaxle assembly | Model code number | 3AX60 |
| Transaxle gear ratio | 1st | 2.861 |
| 2nd | 1.562 | |
| 3rd | 1.000 | |
| 4th | 0.698 | |
| Reverse | 2.230 | |
| Final drive | 3.827 | |
| Recommended fluid | Nissan Matic "D" (Continental U.S. and Alaska) or Genuine Nissan Automatic Transmission Fluid (Canada) (1) | |
| Fluid capacity | 7.0I (7-3/8 US qt, 6-1/8 Imp qt) | |
| (1) Refer to MA-13. "Fluids and Lubricants" . | ||
| (1) | Refer to MA-13. "Fluids and Lubricants" . |
General Specifications
