On a 4341 cab tractor what is the best way to replace the (left) wheel brake cylinder? It is leaking badly. The service manual describes it as the version 2 type (with the bleeder screw leaning to the rear). Do you have to remove the actuator assembly to get it out? How does one do that? Remove the seat and cab floor? Lift the cab? The service manual doesn't cover this. Any help would be appreciated.