2009 Polaris Scrambler 500 4x4 2x4 factory service manual, Page 161Get this manual
FINAL DRIVE
WHEEL AND HUB TORQUE TABLE
Item 4x4 Front Wheel Nuts Rear Wheel Nuts Front Hub Nut Rear Hub Retaining Nut
Specification 4x4 25 FtLbs(34 Nm) 50 FtLbs(68 Nm) Refer to text for procedure (Pg 7.5) 80 FtLbs(108 Nm)
With the Polaris All Wheel Drive System activated (AWD selected), the machine operates as wheel drive vehicle until the rear wheels lose tractionIf the rear wheels lose traction the front wheel rotational speed will decrease, causing the front drive axle speed to exceed front wheel speedRestricting the rotation of the drive clutch roller cage (2) (see Electric Hub Operation) will cause the rollers (3) to climb the ramps of the cam (5), and become squeezed between the ramps and the ring in the hubSee Ill1When the hub clutch assembly, wheel hub, and drive axle are engaged, the front wheels will drive and stay engaged until rear wheel traction is regainedWhen traction is regained, the front wheels will overdrive the hub clutch, pushing the clutch rollers (3) toward the lower part of the cam (5), disengaging the clutchThe rollers are held in place by the spring (4)See Ill2The tension of this spring is critical to AWD hub operationAlways use the correct spring (refer to appropriate parts manual) and use the Hilliard Clutch Garter Spring Installation Tool (PN 2870888)