Fulltext TSBs

Technical Service Bulletins

TSB
12-8-16
  • WATER LEAK ON PASSENGER FRONT FLOOR – BUILT ON OR BEFORE 7/20/2012
Publication Date: August 21, 2012

FORD:
2012 Expedition, F-150
LINCOLN:
2012 Navigator

ISSUE:

Some 2012 F-150, Expedition and Navigator vehicles built on or before 7/20/2012 may exhibit water leaking onto the front passenger side floor when the climate control system is in either air conditioning or defrost mode. This concern may be due to an incorrectly assembled heater core and evaporator core housing.

ACTION:

Follow the Service Procedure to correct the condition.

SERVICE PROCEDURE

  1. From the passenger compartment, inspect the heater core and evaporator core housing for the presence of a nut on the stud immediately to the right of the drain tube. (Figure 1)


    Figure 1 – Article 12-8-16

  2. When properly assembled, the stud should extend 12-17 mm (1/2-11/16″) from the top of the nut, or if the nut is missing, 20-25 mm (3/4-1″) from the housing. If the stud does not extend as specified, the stud hex is not properly oriented to seat within the housing recess. (Figure 2)


    Figure 2 – Article 12-8-16

    1. Stud extends beyond nut 12-17 mm (1/2-11/16″). Proceed to step 6.
    2. Stud does not extend beyond nut 12-17 mm (1/2-11/16″), or nut is missing. Proceed to Step 3.
  3. From the engine compartment, remove the nut from the stud identified in Step 1.
  4. From the passenger compartment, remove the nut from the stud (if present). Rotate the stud until the hex aligns and seats within in the hexagonal cavity in the heater core and evaporator core housing. When properly installed, the stud should extend 20-25 mm (3/4-1″) from the housing. (Figure 2)
  5. Install a new nut on the stud and torque to 4.8 N-m (42 lb-in).
  6. From the engine compartment, install nut on the stud and torque to 7 N-m (62 lb-in).
  7. From the engine compartment, inspect the heater core and evaporator core housing drain tube to ensure it is clear and extends through the bulkhead.


    Figure 3 – Article 12-8-16


PART NUMBERPART NAME
N804178-S437Nut

WARRANTY STATUS:

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: 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.

OPERATIONDESCRIPTIONTIME
120816A2012 Expedition, Navigator And F-150: Inspect And Adjust Stud Following The Service Procedure (Do Not Use With Any Other Labor Operations)0.4 Hr.

DEALER CODING

BASIC PART NO.CONDITION CODE
19b55512