B. Replace Front Wheel Hub and Related Components
1. Lower the vehicle from the hoist. Then disconnect and isolate the battery negative battery cable.2. Using a brake pedal holding tool, depress the brake pedal past its first inch of travel and hold it in this position. Holding the pedal in this position will isolate the master cylinder from the hydraulic brake system and will not allow brake fluid to drain out of the brake fluid reservoir while brake lines are open.
3. Raise the vehicle on the hoist.
4. Remove the tire and wheel assembly.
5. Remove and save the hydraulic flex line banjo bolt located on the caliper and discard the two copper washers.
6. For vehicles equipped with a single and dual piston brake caliper, remove the two bolts at the steering knuckle that retains the brake caliper adapter to the steering knuckle.
7. For vehicles equipped with a four piston caliper, remove the two bolts at the steering knuckle that retains the brake caliper to the steering knuckle.
8. Remove and discard the brake caliper (four piston brake calipers) or brake caliper and brake caliper adapter (single and dual piston brake calipers) as an assembly.
9. Remove and discard the brake rotor.
10. Remove and discard the hub and bearing assembly.
11. Remove and save the three brake shield retaining bolts (Figure 2).
12. Remove and discard the brake shield.
13. Clean the spindle and knuckle area.
14. Install the new brake shield and three retaining bolts. Tighten the bolts to 88 in. lbs. (10 N.m).
15. Install the new hub and bearing onto the spindle.
16. Install the new hub bearing retaining nut. Tighten the nut to 185 ft. lbs. (250 N.m).
17. Using special tool 6888 and C4171, install the wheel bearing cap (Figure 3).
18. Clean the new rotor with brake cleaner and then install the new brake rotor onto the wheel hub.
19. For vehicles equipped with a single or dual piston caliper, perform the following procedure:
a. Mount the brake caliper adapter in a vise (Figure 4).
b. Install the brake caliper pin boots onto the brake caliper adapter (Figure 4).
c. Install the brake anti-rattle clips onto the brake caliper adapter.
d. Lubricate and install the brake caliper pins into the caliper adapter.
NOTE:
Using a small pick tool, carefully lift the brake caliper pin boot slightly to release any trapped air.
e. Remove the protective film from the back of the brake pads to expose the glue.
f. Install the brake pads into the brake caliper adapter.
g. Install the brake caliper onto the brake caliper adapter
h. Install the brake caliper mounting bolts (Figure 5). While holding the caliper pin with an open end wrench, tighten the bolts to 44 ft. lbs. (60 N.m).
20. Install the brake caliper assembly onto the steering knuckle. Tighten the mounting bolts to:
> 70 ft. lbs. (95 N.m) for single and dual piston calipers.
> 140 ft. lbs. (190 N.m) for four piston calipers.
21. For vehicle equipped with a four piston brake caliper, perform the following procedure:
a. Remove the protective film from the back of the brake pads to expose the glue.
b. Slide the new inboard and outboard brake pads into the opening in the disc brake caliper.
c. From the inboard side of the brake caliper, slide the upper brake pad support pin through the inboard half caliper pin hole, the upper holes in both brake pads, and into the hole in the outboard side of the brake caliper.
d. Install the upper end of the brake pad spring clip under the upper brake pad support pin.
e. Press on the lower end of the spring clip until it touches the brake rotor.
f. From the inboard side of the brake caliper, slide the lower brake pad support pin through the inboard half caliper pin hole, the lower holes in both brake pads, and into the hole in the outboard side of the brake caliper.
g. Release the spring clip allowing it to engage the lower support pin.
h. From the inboard side of the brake caliper, seat the upper and lower support pins into the caliper using a pin punch and hammer.
NOTE:
The support pins must be driven into the brake caliper until the support pin retaining rings are locked into place.
i. Once the support pins are fully installed into the brake caliper, inspect the assembled caliper to make sure the spring clip is centered in the opening of the brake caliper, correctly engaging the upper and lower support pins, and is resting against both brake pads.
22. Using new copper washers and the original banjo bolt, install the brake caliper hydraulic flex line to the brake caliper. Tighten the banjo bolt to:
> 31 ft. lbs. (42 N.m) on single or dual piston calipers.
> 20 ft. lbs. (28 N.m) on four piston calipers.
23. Remove the brake pedal holding tool from the vehicle.
24. Fill the brake fluid reservoir with clean brake fluid.
25. Bleed the new brake caliper(s). Tighten the bleed screw after bleeding to:
> 101 in. lbs. (11.5 N.m) on single or dual piston calipers.
> 75 in. lbs. (8.5 N.m) on four piston calipers.
26. Install the wheel and tire assembly. Tighten the lug nuts to:
> 107 ft. lbs. (145 N.m) for aluminum wheels.
> 140 ft. lbs. (190 N.m) for steel wheels.
27. Connect the negative battery cable.
28. For Vehicles equipped with the "Auto-Up" front window feature, calibrate the door module using the following procedure:
a. Turn the ignition to the "Run" position.
b. Regardless of current window position, move the driver side front window upward until the window stalls in the full up position. Allow the window motor to stall for at least 2 seconds before releasing the window switch.
c. Move the driver side front window downward until the window stalls in the full down position. Allow the window motor to stall for at least 2 seconds before releasing the window switch.
d. Move the driver side front window upward until the window stalls in the full up position. Allow the window motor to stall for at least 2 second before releasing the window switch.
e. Repeat steps 28a. through 28d. to calibrate the module for the passenger side front window.
f. Verify the windows are properly calibrated by operating the "Auto-Up" feature on the windows. Repeat this procedure if the calibration failed.
29. For Vehicles equipped with Electronic Stability Program (ESP), calibrate the Steering Angle Sensor (SAS) using the following procedure:
CAUTION:
If the vehicle is equipped with Electronic Stability Program (ESP), once the battery is reconnected, the Steering Angle Sensor (SAS) within the Antilock Brake Module (ABM) needs to be calibrated. The SAS requires calibration (initialization) using the wiTECH scan tool. If the SAS is not calibrated following battery reconnection, the ESP/BAS indicator lamp will flash continuously with no Diagnostic Trouble Codes (DTC's).
a. Position the front wheels straight ahead and center the steering wheel.
b. Connect the wiTECH pod to the vehicle data link connector.
c. Place the ignition in the "RUN" position.
d. Launch the wiTECH Diagnostic Application.
e. Starting at the "Vehicle View Screen" screen, select "ABS Icon".
f. Select the "Misc. Functions" tab.
g. Select "Initialize ECU" from the list.
h. Follow the wiTECH on-screen instruction to complete the drive test.
30. For Vehicles equipped with Electronic Stability Program (ESP), clear all Diagnostic Trouble Codes (DTC's)
31. Disconnect and remove the wiTECH pod from the vehicle.