Cylinder Head and Valves CAUTION: A second set of pins has been added to JDG970A tool. With 6125 Tier II engines (engine serial no. 030000—), the holes for the pins in the rocker arm shaft are smaller. The new pins have a smaller diameter shaft and are marked “JDG1847”. To safely handle the rocker arm shaft assembly, BE CERTAIN to verify the engine serial number, then use the correct pins for that engine. 02 020 11 8. Depress actuator (ball) pins and install JDG970A Rocker Arm Lifting Fixture (B) into rocker arm shaft cap screw holes as shown. Replace pins to seat ball locks. 9. Remove both front and rear rocker arm and shaft assemblies using JDG970A Rocker Arm Lifting Fixture. 10.
Discard rocker arm shaft hold-down clamp cap screws. RG,RG34710,64 –19–21DEC00–2/2 CTM100 (06APR04) 02-020-11 P OWER T ECH 10.5 L & 12.5 L Diesel Engines 040604 PN=83