SPECIFICATIONS kg (including oil) ATF DEXRON II or III. Major element Housing Part-time Bolt 11EA, M8 x 1.25

Size: px

Start display at page:

Download "SPECIFICATIONS kg (including oil) ATF DEXRON II or III. Major element Housing Part-time Bolt 11EA, M8 x 1.25"

Gilbert Shaw
5 years ago
Views:

1 SPECIFICATIONS Description Specifications Total length 343 mm Weight 32.4 kg (including oil) Oil capacity 1.4 L Oil type ATF DEXRON II or III Location Transfer case Major element Housing Part-time Bolt 11EA, M8 x 1.25 Input shaft A/T: outer spline

selecting 4WD "HIGH" and 2.48 of reduction gear ratio when selecting 4WD "LOW".

2 OVERVIEW By using the planetary gear sets, two-gears shift type part time transfer case achieves direct connection when selecting 4WD "HIGH" and 2.48 of reduction gear ratio when selecting 4WD "LOW". The silent chain in transfer case transfers the output power to front wheels. The simple operation of switches on instrument panel allows to shift between "2H" and "4H" easily while driving (for 4L: stop vehicle first). The warning lamp warns the driver when the system is defective. Side View Rear View

3 Operation Description Mode Conditions Driving mode 2H 2 Wheel drive (rear wheel) 4H 4 Wheel drive (high speed) Rear-wheel drive mode. This is used under normal or high-speed driving conditions on public roads or highways. This is used under sandy, muddy or snow-covered road conditions Mode change 4 L 4 Wheel drive (low speed) 2H 4H 2 Wheel drive 4 Wheel drive This is used for maximum traction. When cornering with low speed in 4WD condition, there could be tire dragging, some mechanical shocks and resistances in vehicle s drive train. These are normal conditions due to internal resistance in the drive train when the 4WD system is properly working Shifting is possible while driving at the speed of 70 km/h or less 2H, 4H 4L 2 Wheel drive, 4 Wheel drive (high speed) 4 Wheel drive (low speed) For Automatic Transmission: - Stop the vehicle on level ground and move the gear selector lever into the N position. Turn the switch to the desired position. For Manual Transmission: - Stop the vehicle on level ground and move the gear selector lever into the N position. Then turn the switch to the desired position while depressing the clutch pedal. To make the mode change easily, stop the vehicle on level ground and turn the mode switch to the desired position and move the shift lever to "N"-"R"-"N" while depressing the brake pedal.

4 WD SYSTEM COMPONENTS Exterior components Front axle 4WD solenoid valve Front propeller shaft Hub & locking hub Actuator Rear propeller shaft Rear axle T/C assembly T/C control motor assembly

5 Interior Components 4WD Switch assembly Warning & Indicator Lamp for 4WD TCCU

6 SYSTEM LAYOUT

3240-01 05-9 4. IWE LOCKING HUB SYSTEM 1) Overview The vacuum locking hub uses the IWE (Integrated Wheel End) system, and in this system, the vacuum is generated only within the hub actuator.

7 IWE LOCKING HUB SYSTEM 1) Overview The vacuum locking hub uses the IWE (Integrated Wheel End) system, and in this system, the vacuum is generated only within the hub actuator. It is structured to transmit power to the front section after the actuator hub is engaged following the release of vacuum from the drive shaft end gear and the hub end gear. Booster Vacuum pump Vacuum generation process in front hub actuator

05-10 (2) Vacuum System Related to 4WD Check valve This valve allows the vacuum pressure to flow through it in

Vacuum solenoid valve Hub actuator (RH) In 4WD mode, the TCCU blocks the transferring of vacuum pressure from

Gear engaged Block the vacuum pressure To atmosphere Gear disengaged 4WD: The vacuum pressure is released from

8 05-10 (2) Vacuum System Related to 4WD Check valve This valve allows the vacuum pressure to flow through it in only one direction. This prevent the vacuum from abruptly releasing due to faulty vacuum pump. Vacuum solenoid valve Hub actuator (RH) In 4WD mode, the TCCU blocks the transferring of vacuum pressure from vacuum pump to locking hub by supplying the power to solenoid valve. Gear engaged Block the vacuum pressure To atmosphere Gear disengaged 4WD: The vacuum pressure is released from the hub actuator. At this time, the front hub end gear is engaged. 2WD: The vacuum pressure pulls in the locking hub actuator so that it will not be engaged with the front end hub gear.

9 POWER FLOW Switching 2H, 4H 4L TCCU Vacuum solenoid Locking hub operation (Released internal vacuum) Transfer case Front propeller shaft Rear propeller shaft Front axle Rear axle Front wheel Rear wheel

10 ) 2H Mode (2 Wheel Drive) Power Flow Output shaft of transmission Rear wheel Input shaft of transfer case Output shaft of transfer case Rear propeller shaft Rear axle Rear wheel The driving force is directly engaged (1:1) to rear axle and is transferred only to the rear wheels.

3240-01 05-13 2) 4H Mode (4 Wheel Drive - High Speed) Power Flow The driving force is pass through

11 ) 4H Mode (4 Wheel Drive - High Speed) Power Flow The driving force is pass through 4WD High magnetic clutch in transfer case and is distributed on front wheels and rear wheels (50;50).

12 ) 4L Mode (4 Wheel Drive - Low Speed) Power Flow The gear ratio is reduced to 2.48;1 while passing through 4WD Low range and planetary gear set in transfer case and the driving force is distributed on front wheels and rear wheels (50;50).

1. SPECIFICATIONS Part-time transfer case. Mating surface of front flange kg (including oil)

1. SPECIFICATIONS Part-time transfer case. Mating surface of front flange kg (including oil) 3240-01 07-3 1. SPECIFICATIONS Type Total length Description Mating surface of front flange Weight Oil capacity Oil type Location Specifications Part-time transfer case 343 mm 40 mm 32.4 kg (including