From: Bulletin No.66-2P.
"Models fitted with the new T2436 Mainshaft require the use of the new D662/3 clutch center extractor. The D662/3 extractor also works on older models and therfore supercedes the DA50/1. Tri-Cor CD222 pullers in stock here have been modified to fit these late models also. Older CD222. pullers can be modified to fit by removing the taper at the bottom of the inside bore of the tool. DA50/1 pullers will not work on models fitted with the T2436 mainshaft and cannot be modified to fit."
Photo of the D622/2 Clutch Hub Extractor