A/C - Lack of Cooling Ability
TSB 08-13-507/07/08
LACK OF NC COOLING DUE TO DESICCANT
MATERIAL CLOGGING THE ORIFICE TUBE
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.
Parts Block
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.
OPERATION DESCRIPTION TIME
MT081305 Claim SLTS Operation Or Actual
Use Actual Time If SLTS Time
Operation Is Not Available
DEALER CODING
CONDITION
BASIC PART NO. CODE
19C836 49
Disclaimer