2) 1-spring type (DE12T) (1) Disassembly 1. Cap nut 2. Adjusting screw 3. Spring 4. Push rod 5. Connector 6. Retaining nut 7. Needle valve 8. Nozzle 9. Nozzle holder (2) Reassembly After removing carbon deposit, sub- clean it. Replace all the gaskets with new merge the nozzle in diesel oil and ones. Assemble the parts and tighten them to specified torque. (3) Adjustment Remove the cap nut and assemble a noz- zle to a nozzle tester. With the adjusting screw loosened, oper- ate the nozzle 2 ~ 3 times to bleed it. Operate the nozzle tester lever at the specified rate. Adjust the injection pressure to the stan- dard pressure by spring tension shims.
After adjusting the injection pressure, EA0M3003 tighten the cap nut to specified torque. Re-check the injection pressure and see if the spray pattern is normal. - 139 - MAINTENANCE OF MAJOR COMPONENTS EQM4025S EQM40 EQM40 25S EQM4026S EQM402 EQM402 6S