A B737-200 DURING PUSHBACK THE R ENG OIL FILTER CAP O-RING SEAL FAILED.

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ON APR/ZZ/97 I WAS ASSIGNED ACFT XX. PART OF THE WORK RELEASE REQUIRED REPLACEMENT OF R ENG OIL FILTER. FOLLOWING THE JOB CARD TO THE LETTER I INSTALLED THE FILTER UTILIZING CHANGE KIT #XYZ. THE KIT CONTAINED 4 PIECES: FILTER ELEMENT; PACKING (WHICH I ASSUMED WAS FOR THE FILTER CAP HOUSING); PACKING FOR THE PRESSURE RELIEF VALVE; AND A PAPER STRAINER. AFTER TORQUING COVER TO SPECIFIC TORQUE (30 IN LBS MAX); I LEAK TESTED BY RUNNING ENG FOR 5 MINS UNTIL ENG OIL TEMP REACHED 100 DEGS F. NO LEAKS OR PACKING MIGRATION WERE NOTED. AT DEP TIME DURING THE PUSHBACK IMMEDIATELY AFTER ENG START THE OIL FILTER SEAL FAILED. AFTER INVESTIGATION IT WAS FOUND THAT NONE OF THE KITS IN STOCK THAT WERE REFED BY THE WORK CARD CONTAINED THE CORRECT PACKING FOR THE FILTER COVER. IT WAS ALSO NOTED THAT THE WORK CARD OMITTED ANY REF TO THE FACT THAT THERE WERE 3 DIFFERENT CONFIGNS OF OIL FILTER INSTALLATIONS ON THE JT8D N2 ACCESSORY GEAR BOX. ONE OF THESE MODIFIED CONFIGNS WAS ADDRESSED IN A 'TYPICAL REPAIR' MAINT ALERT BULLETIN DATED 1/ZZ/97. I READ THAT BULLETIN; BUT IT WAS NOT COMMITTED TO MEMORY. THERE WAS ALSO A REF TO B737-200 MAIN OIL FILTER REPLACEMENT IN THE SUPPLEMENTAL INFO BINDER; BUT THERE WAS NO MENTION IN THIS SUPPLEMENT OF ANY MODIFICATION. ACR MAINT POLICIES AND PROCS MANUAL CLRLY STATES THAT IF DISCREPANCIES ARE FOUND IN AN AREA WHERE A SPECIFIC JOB PROC CARD IS AVAILABLE; THE JOB PROC CARD SHOULD BE USED. IT ALSO STATES INFO CONTAINED WITHIN THE TEXT OF THE JOB PROC CARD SUPERSEDES INFO PUBLISHED IN VENDOR/ACFT MANUFACTURER MANUALS. THE CONFIGN DIFFERENCES WERE ADDRESSED BY THE MAINT DUTY MGR IN AN ALL STATION MESSAGE DATED APR/ZZ/97. HE STATED THAT OIL FILTER REPLACEMENT RELATED JOB CARDS WERE BEING REVISED. THESE REVISED CARDS NOW CONTAIN THE ESSENTIAL INFO NEEDED TO PERFORM A SAFE MAINT ACTION ON THIS PARTICULAR JOB; INFO NOT CLRLY AVAILABLE TO ME THROUGH THIS JOB CARD ON APR/ZZ/97.