7.13
FINAL DRIVE
7
All Wheel Drive Operation
Front Gearcase Engagement:
The AWD switch may be
turned on or off while the vehicle is moving. Initially, the
vehicle’s electronic system will not enable the AWD until the
engine RPM is below 3100. Once enabled, AWD will remain
engaged until the rear wheels regain traction and the propshaft
speed matches the front axle speed .
Engage the AWD switch before getting into conditions where
the front wheel drive may be needed. If the rear wheels are
spinning, release the throttle before switching to AWD.
Normal Operation:
With the AWD switch off the vehicle
drives only the rear wheels (2 wheel drive). When the AWD
switch is activated it electronically activates the Hilliard Clutch,
and enables the front wheels to provide driving torque when
needed.
4x4 Engagement:
When the AWD switch is turned on, a 12
Vdc current charges the hub coil and creates a magnetic field.
This magnetic field attracts an armature plate keyed to a roller
cage that contains 20 rollers. The difference in rpm between the
input shaft (propshaft) and the front axles, forces the rollers into
the external cam of the Hilliard clutch assembly. The rollers are
forced inward to engage themselves to the output hubs that link
directly to both front axles, resulting in True All Wheel Drive.
Roller cage and roller’s rotate inward and grip the output hubs
for AWD engagement.
Mechanical Disengagement:
As the front and rear wheels gain
traction, rotating very close to the same speed, the front wheels
“overdrive” the output hubs and the rollers are forced outward,
disengaging the AWD. The vehicle is now back to rear wheel
drive until the rear wheels lose traction again.
CAUTION
Switching to AWD while the rear wheels are
spinning may cause severe drive shaft and
gearcase damage. Always switch to AWD while
the rear wheels have traction or are at rest.
CAUTION
If the rear wheels are spinning, release the
throttle before turning the AWD switch on.
If AWD is engaged while the wheels are
spinning, severe drive shaft and clutch
damage could result.
Roller Cage
& H-springs
Rollers
Output Hubs
Содержание 2008 Ranger RZR
Страница 9: ...1 9 GENERAL INFORMATION 1 SAE Tap Drill Sizes Metric Tap Drill Sizes Decimal Equivalents ...
Страница 16: ...2 6 MAINTENANCE COMPONENT INSPECTION SERVICE LOCATIONS Front and Rear View ...
Страница 17: ...2 7 MAINTENANCE 2 RH and LH Side Views ...
Страница 42: ...3 2 ENGINE ENGINE SPECIFICATIONS Crankcase Exploded Views ...
Страница 43: ...3 3 ENGINE 3 Oil Pump Water Pump Engine Cover Exploded View ...
Страница 44: ...3 4 ENGINE Stator Cover Starter Water Pump Oil Filter Pressure Relief Exploded View ...
Страница 45: ...3 5 ENGINE 3 Cylinder Cylinder Head Piston Exploded View ...
Страница 104: ...NOTES ENGINE 3 64 ...
Страница 139: ...4 35 ELECTRONIC FUEL INJECTION 4 Fuel Injector PTO Circuit Fuel Injector MAG Circuit ...
Страница 140: ...4 36 ELECTRONIC FUEL INJECTION Engine Coolant Temperature Sensor ECT Circuit Engine Overheat Lamp Driver Circuit ...
Страница 142: ...4 38 ELECTRONIC FUEL INJECTION Throttle Position Sensor TPS Circuit Fuel Pump Circuit ...
Страница 230: ...NOTES FINAL DRIVE 7 36 ...
Страница 250: ...8 20 TRANSMISSION TRANSMISSION EXPLODED VIEWS Shift Housing Transfer Case Exploded View Transfer Case Shift Housing ...
Страница 287: ...10 17 ELECTRICAL 10 COOLING SYSTEM SCHEMATIC Cooling System Break Out Diagram ...
Страница 307: ...10 37 ELECTRICAL 10 ELECTRICAL BREAKOUT DIAGRAMS 12V Key On Power Circuit Starting System Circuit ...
Страница 308: ...10 38 ELECTRICAL Instrument Cluster Circuit Transmission Switch Circuit ...
Страница 309: ...10 39 ELECTRICAL 10 Wheel Speed Sensor Circuit AWD Circuit ...
Страница 310: ...10 40 ELECTRICAL Fuel Gauge Display Circuit Cooling Fan Circuit ...
Страница 311: ...10 41 ELECTRICAL 10 Charging System Circuit ...
Страница 312: ...NOTES ELECTRICAL 10 42 ...