Mile Marker 449SS Installation Instructions

Installation Instructions:

1. Remove vehicle's existing hub assembly (dust cap, axle snap ring, lock ring, drive flange,
spring and oil slinger ring).
2. Set aside removed components.
3. Clean and remove corrosion from wheel housing,
paying close attention to locking ring groove.
4. Put a light coat of motor oil on the axle shaft and the
wheel housing splines.
5. Insert the Mile Marker body assembly (Item 3) into the
wheel housing. Line up the axle splines first, then rotate
the outside of the body assembly until the wheel housing
splines line up. Slide body assembly in. You may need to
lift the axle up slightly to center wheel bearing free play.
ITEM DESCRIPTION
1 Allen Head Screw
2
Cap Assembly
3 Body Assembly
4 Alignment Pin
5 Lock Ring
6
Spirolox
6. Grasp the spirolox (Item 6) and spread it apart with your fingers. Angle the entire lock ring (Item 5) away from face of the
body assembly so that the inboard can be inserted into the ring groove in the truck. Maintain the angle and continue to insert
the lock ring in a spiral manner until the lock ring is installed. Insert into the groove of the wheel housing. These hold the body
assembly into the housing.
7. If axle groove is visible, you can now install the optional factory axle snap ring.
8. Cap Assembly (Item 2) (See diagram on page 2)
9. Install the six Allen head screws.
10. Turn dial to lock, then back to free, ensuring the assembly moves freely.
PAGE 1
PREMIUM LOCKING HUBS
Dust Cap
PART NUMBER
449.14
449.CAS
449SS
449.BA
N/A
449.09
105.15
A) Set the dial on the cap assembly to FREE.
B) Place the cap assembly over the opening on the wheel housing.
Ensure that the alignment pin is in place.
C) Ensure the ends of the cap springs are lined up with the base of the ramps
on the cam of the Mile Marker body assembly.
2121 Blount Road, Pompano Beach, FL 33069
Axle Snap Ring
Spring and Oil Slinger Ring
Drive Flange
Lock Ring
2
3
1
4 6
5
Part Number 449SS
Wheel Housing Splines
Axle Splines
Wheel Housing Splines
Axle Shaft
Axle Splines
www.MileMarker.com 1.800.886.8647
Axle Shaft