| 4WD – NOISY OR ENGAGED FRONT HUBS IN 2WD MODE – INTEGRATED WHEEL END (IWE) VACUUM HOSE REPAIR KIT | |
| Publication Date: August 16, 2016 | |
ISSUE:
Some 2004-2014 F-150 and 2006-2008 Mark LT vehicles equipped with four-wheel drive (4WD) may exhibit noisy or engaged front hubs when operating in two-wheel drive (2WD) mode.
ACTION:
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
- Disconnect the IWE vacuum hose from the top (outlet) port of the IWE solenoid. For solenoid location, refer to Wiring Diagram (WD), cell 151.
- Connect a hand vacuum pump to the IWE vacuum hose and apply 381 mm-Hg (15 in-Hg) of vacuum. Will the IWE system hold 381 mm-Hg (15 in-Hg) of vacuum for 1 minute?
- Yes – this article does not apply. Refer to Workshop Manual (WSM), Section 308-07 for normal diagnosis.
- No – proceed to Step 3.
- Inspect the IWE vacuum hose from inside the wheel well on each side of the vehicle for visible damage. Does either side have damage causing a vacuum leak?
- Yes – proceed to Step 4.
- No – this article does not apply. Refer to WSM, Section 308-07 for normal diagnosis.
- Install the IWE vacuum hose service kit on both sides. Refer to the instruction sheet included in the parts kit.
| PART NUMBER | PART NAME |
| FL3Z-3C125-C | IWE Vacuum Hose Service Kit |
| OPERATION | DESCRIPTION | TIME |
| 160108A | 2004-2014 F-150 4WD, 2006-2008 Mark LT 4WD: Diagnose And Install The IWE Vacuum Hose Service Kit (Do Not Use With Any Other Labor Operations) | 0.5 Hr. |
WARRANTY STATUS
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage.
Warranty/ESP coverage limits/policies/prior approvals are not altered by a TSB. Warranty/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.
DEALER CODING
| BASIC PART NO. | CONDITION CODE |
| 3C125 | 01 |
