Fulltext TSBs

Technical Service Bulletins

TSB
08-13-5
  • LACK OF A/C COOLING DUE TO DESICCANT MATERIAL CLOGGING THE ORIFICE TUBE
Publication Date: June 19, 2008

FORD:
2004-2005 Excursion
2004-2007 F-Super Duty, F-650, F-750

This article supersedes TSB 06-17-12 to update the Part List.

ISSUE:

Some 2004-2007 F-Super Duty 250-750, and 2004-2005 Excursion vehicles may exhibit a lack of air conditioning (A/C) cooling, due to desiccant material clogging the evaporator core orifice tube. Symptoms may include excessive high side pressures.

ACTION:

Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE

Inspect the orifice tube for desiccant material clogging the tube. This material has been described as being like sand, with a greenish color. If desiccant material is present, refer to the following Service Procedure. If not, follow normal diagnostics.

NOTE:IT IS VERY IMPORTANT TO ENSURE A COMPLETE FLUSHING OF THE REFRIGERANT SYSTEM IS PERFORMED TO REMOVE ALL CONTAMINANTS. IF NOT, A REPEAT CLOGGING CONDITION MAY OCCUR.

  1. Replace the orifice tube. Refer to Workshop Manual (WSM), Section 412-03: Removal And Installation – Evaporator Core Orifice.
  2. Replace the suction accumulator/drier with a revised part. Refer to WSM, Section 412-03: Removal And Installation – Suction Accumulator.
  3. Replace the compressor. Refer to WSM, Section 412-03: Removal And Installation – Compressor.
  4. Flush the condenser, the lines and the evaporator core. Refer to WSM, Section 412-00: General Procedures – A/C System Flushing.
  5. Recharge system.

    NOTE:FOR F-SUPER DUTY 650/750 APPLICATIONS, REVIEW ENGINE APPLICATION WITH COMPRESSOR PART NUMBER. THERE ARE 3 DIFFERENT COMPRESSOR APPLICATIONS DEPENDING ON ENGINE CONFIGURATION.


PART NUMBERPART NAME
6C3Z-19C836-AAccumulator Asy
F5UH-19D990-AAOrifice Tube
4L3Z-19703-ABCompressor Asy – Ford Engine
4C4Z-19703-AACompressor Asy – Caterpillar Engine
4C4Z-19703-DA Compressor Asy – Cumins Engine

WARRANTY STATUS:

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

OPERATIONDESCRIPTIONTIME
MT081305Claim SLTS Operation Or Use Actual Time If SLTS Operation Is Not AvailableActual Time

DEALER CODING

BASIC PART NO.CONDITION CODE
19C83649