DIFFERENTIAL GEAR OIL COOLER SYSTEM
PD-29prose procedureDescription
In this system, when the differential gear oil temperature exceeds the specified value, the temperature switch which is installed in the rear cover senses the temperature of the gear oil and activates the magnetic pump. The magnetic pump circulates differential gear oil which is cooled by the cooler located in the rear of the vehicle.
The pump automatically repeats ON-OFF operation according to the temperature of the differential gear oil.
| Specification | Value |
|---|---|
| Pump OFF → ON temperatureMagnetic pump activation | 132 - 138°C (270 - 280°F) |
| Pump ON → OFF temperatureMagnetic pump deactivation | 124 - 130°C (255 - 266°F) |
Pump OFF → ON temperatureMagnetic pump activation
132 - 138°C (270 - 280°F)
Pump ON → OFF temperatureMagnetic pump deactivation
124 - 130°C (255 - 266°F)
However, the pump will not operate when the vehicle speed is less than 10 km/h (6 MPH).
When the oil temperature becomes excessively high, the warning lamp in the combination meter will illuminate.
| Specification | Value |
|---|---|
| Warning lamp OFF → ON temperatureWarning lamp activation | 180°C (356°F) |
| Warning lamp ON → OFF temperatureWarning lamp deactivation | 155°C (311°F) |
Warning lamp OFF → ON temperatureWarning lamp activation
180°C (356°F)
Warning lamp ON → OFF temperatureWarning lamp deactivation
155°C (311°F)
Removal and Installation
Parts DiagramFig. fig1
| # | Part Name | Notes / Torque |
|---|---|---|
| 1 | Differential oil cooler assembly | — |
| 2 | Differential oil cooler protector | — |
| 3 | Differential oil cooler tube assembly | Torque: 13 - 17 N·m (1.3 - 1.7 kg·m, 9 - 12 ft·lb) |
| 4 | Differential oil cooler hose | — |
| 5 | Inlet connector | Torque: 20 - 29 N·m (2 - 3 kg·m, 14 - 22 ft·lb) |
| 6 | Temperature switch | — |
| 7 | Warning switch | — |
| 8 | Gear carrier | — |
| 9 | Oil pump mounting bracket | — |
| 10 | Oil pump bracket assembly | — |
| 11 | Oil pump assembly | Torque: 29 - 49 N·m (3 - 5 kg·m, 22 - 36 ft·lb) |
| 12 | Differential oil cooler hose | Torque: 13 - 17 N·m (1.3 - 1.7 kg·m, 9 - 12 ft·lb) |
| 13 | Differential oil cooler hose (second instance) | Torque: 29 - 49 N·m (3 - 5 kg·m, 22 - 36 ft·lb) |
| Specification | Value |
|---|---|
| Differential oil cooler assembly fasteners torque | 13 - 17N·m (1.3 - 1.7 kg·m, 9 - 12 ft·lb) |
| Inlet connector torque | 20 - 29N·m (2 - 3 kg·m, 14 - 22 ft·lb) |
| Differential oil cooler tube assembly torque | 13 - 17N·m (1.3 - 1.7 kg·m, 9 - 12 ft·lb) |
| Oil pump assembly torque | 29 - 49N·m (3 - 5 kg·m, 22 - 36 ft·lb) |
| Differential oil cooler hose (lower) torque | 29 - 49N·m (3 - 5 kg·m, 22 - 36 ft·lb) |
Differential oil cooler assembly fasteners torque
13 - 17N·m (1.3 - 1.7 kg·m, 9 - 12 ft·lb)
Inlet connector torque
20 - 29N·m (2 - 3 kg·m, 14 - 22 ft·lb)
Differential oil cooler tube assembly torque
13 - 17N·m (1.3 - 1.7 kg·m, 9 - 12 ft·lb)
Oil pump assembly torque
29 - 49N·m (3 - 5 kg·m, 22 - 36 ft·lb)
Differential oil cooler hose (lower) torque
29 - 49N·m (3 - 5 kg·m, 22 - 36 ft·lb)