TSB's

Winter tranny woes

Some 2008-2009 Ford F-Super Duty, Econoline and LCF vehicles built between 5-18-2007 and 11-1-2009 and operated in cold climates typical to –35 degrees Fahrenheit and below that are equipped with a 5R110W transmission, parts numbers starting with 8C3P-7000, 8C2P-7000, 8E7P-7000, 9C3P-7000, 9C2P-7000 and 9E9P-7000 built without the factory installed external in-line transmission filter can experience premature Low/Reverse One Way Clutch failure related to lack of lube while operating in –35 degree F and below temperatures.

Verify the vehicle build date for F-Super Duty or E-Series vehicles built between 5-18-2007 and 10-27-2008, or LCF built between 5-20-2007 and 11-1-2008. Verify that the vehicle does not include the external in-line transmission filter. Verify the transmission part number as noted earlier.

  1. If all above apply, overhaul the transmission following the workshop manual, section 307-01.
  2. While performing the overhaul, replace the front pump with a 9C3Z-7A103-B pump assembly. This new replacement pump assembly can be identified by the engineering part number 9C3P-7A103-AC, visibly etched on the machined front face adjacent to the bolt hole. DO NOT install the 9C3Z-7A103-B pump into a vehicle that is already equipped with a factory installed external in-line transmission filter.
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