Fulltext TSBs

Technical Service Bulletins

TSB
06-22-15
  • HEATER CORE LEAKS – 6.0L ENGINE
Publication Date: October 31, 2006

FORD:
2003-2005 Excursion
2003-2007 F-Super Duty

ISSUE:

Some 2003-2007 F-Super Duty and 2003-2005 Excursion vehicles equipped with 6.0L diesel engines may exhibit a leaking heater core. The majority of repeat heater core leaks are due to a high flow rate or use of poor quality coolant.

ACTION:

Follow the Service Procedure steps to correct the heater core if it is leaking, review the location of the leakage and check the condition of the coolant.

SERVICE PROCEDURE

NOTE:IT IS VERY IMPORTANT TO COMPLETELY FLUSH ENGINE COOLING SYSTEM TO REMOVE ANY POSSIBLE CONTAMINATION.

  1. Flush and refill coolant, reference Workshop Manual (WSM), Section 303-03.
  2. Replace the heater core, reference WSM, Section 412-02.
  3. Disconnect the inlet heater hose at the engine outlet port.
  4. Install a restrictor in the inlet heater hose about 5″ (127 mm) from engine end of the hose.
  5. Make sure that the tapered end of the restrictor points toward the engine. (Figure 1)


    Figure 1 – Article 06-22-15

    CAUTION:CORRECT LOCATION AND POSITION OF THE RESTRICTOR IS NECESSARY FOR PROPER FUNCTIONING.

  6. Clamp the restrictor in place using a worm-drive type hose clamp. (Figure 1)
  7. Refill coolant, reference WSM, Section 303-03.

    NOTE:FOR ADDITIONAL INFORMATION ON HEATER CORE FAILURES AND ELECTROLYSIS, REFERENCE TSB 06-21-19.


PART NUMBERPART NAME
E1DZ-18D358-BRestrictor
4C3Z-18476-BAHeater Core

NOTE:THE RESTRICTOR PART IS SOLD IN PACKAGES OF TWO (2), BUT ONLY ONE (1) NEEDS TO BE INSTALLED PER VEHICLE.

OTHER APPLICABLE ARTICLES:

06-21-19

WARRANTY STATUS:

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage

OPERATIONDESCRIPTIONTIME
062215A2003-2007 F-Super Duty, 2003-2005 Excursion And Equipped With A 6.0L: Replace The Heater Core, And Install A Restrictor In The Inlet Heater Hose, After Flushing The Cooling System (Do Not Use With 8005D, 18476A, 8005B, 19700A, 04320B 8575B1)2.9 Hrs.

DEALER CODING

BASIC PART NO.CONDITION CODE
1847642