4WD System - General Information: Troubleshooting
4WD SYSTEM TROUBLESHOOTING
| Symptom | Expected cause | Countermeasure |
|---|---|---|
| Oil leakage | Oil leakage on connecting part of transfer case (1) | Adjustment or replacement, adjustment |
| Oil leakage on under part of transfer case (1) | Adjustment or replacement, adjustment | |
| Oil leakage trace on connecting part of transmission (2) | Adjustment | |
| Oil leakage at assembly part of drive shaft (3) | Adjustment or replacement, adjustment | |
| Oil leakage trace around air bleeder (4) | Adjustment | |
| Upside down the oil seal main lip (2), (3) | Replacement | |
| Pushed aside oil seal (2),(3) | Replacement | |
| fallen out oil seal (2),(3) | Replacement | |
| Spline abrasion (check whether spline at transmission has abrasion or not) | Adjustment or replacement, adjustment | |
| Noise | "Repeated clicking noise" noise while driving | Adjustment |
| "Repeated tapping noise" noise from under the vehicle while full turn circling | Adjustment | |
"Clunking noise" noise when the vehicle accelerate rapidly or braking rapidly.
|
Adjustment or replacement, adjustment |
| Area of leakage occurring | Area | Applied engine |
|---|---|---|
| (1) Connecting part/under part of transfer case (2)Connecting part of transmission (3)Assembly part of drive shaft (4)Air bleeder part |
R2.0/2.2 Theta 2.0/2.4 Nu2.0 | |
| Lambda 3.3/3.5 S3.0 |
*Range of "adjustment"
- Clean out the oil or trace of grease leakage
- Check whether engine or transmission has oil leakage and oil flow down or not.
- Check the parts that is related to trouble area.