Pilot clarification for pesky repairs
Correction needed for pilot clarification in February issue
Correction to February’s edition of the TCRA newsletter. We incorrectly listedthe long pilot as 1.3 inches. More specific pilot specifications should be as follows: 1.270for the short pilot; 1.450 for the regular pilot; and 1.510 for the long pilot.
We appologize for any confusion this article may have caused, and appreciate the dilagent work of members to correct our mistakes.Keep the responses and feedback coming!
Found in March 2006, Newsletter
In response to continued incorrect pilot identification and misuse among the family of A4LD/4R55 converters, we will try to clarify the differences causing these issues.
First of all, Ford Motors has manufactured these converters with four common converter pilots. Application and engine size must be known prior to determining which is the correct pilot to use. Dacco Converters outlines and i dentifies each pilot in the latest Dacco catalog, volume 14, page 18. In this article, the three most commonly used are highlighted.
Photo A shows representation of the latest pilot version. It is approximately 1.250 inches long. Photo B represents the most common style pilot, with a length of 1.450 inches. Photo C shows a less common pil ot, with a length of 1.300 inches. This pilot is most commonly found in ‘01-’03 Ford Rangers, with an IL code stamped on the converter.
The most uncommon pilot is found on the Ford Merkur with a pilot length of less than one inch. It is important to understand the differences between pilots, which is best learned through observation. Never substitute a converter using a different style of pilot.
As an important note to rebuilders and installers alike , the pilot protrudes into the crank shift adaptor less than .200 inches. Adaptor examination for wear and breakage is a must.
We hope this helps in identifying which pilot is the correct piece to use, and will correct any misuse and improper installations.
Found in issue February 2006