Tham khảo tài liệu 'cummins engine shop manual part 9', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | TESTING AND ADJUSTING INJECTOR AND VALVE CLEARANCE TESTING AND ADJUSTING TESTING AND ADJUSTING THE VALVE CLEARANCE Special tools Part Number Part Name Q ty A 795-130-2103 Torque wrench set 1 B 795-562-1300 Feeler gauge 1 Adjust the valve clearance in the same cranking position after the injector is adjusted. Testing the valve clearance means checking to see if a feeler gauge of the specified clearance can slide lightly when inserted between the rocker arm lever and the crosshead. If the clearance deviates from the standard value Valve arrangement adjust the clearance in the following manner. o Intake valve o Exhaust valve 1 Loosen locknut 4 for adjustment screw 3 . 2 Insert feeler gauge c between the rocker arm lever and the crosshead and adjust the clearance with the adjustment screw just until the gauge can be slided lightly. 3 Hold the adjustment screw with screwdriver T and tighten the locknut with wrench B. Locknut kgm After the locknut is tightened check the clearance again. Adjust the other valve clearances according to the firing order in the same way as described above. 207F20I 12-Ọ0Ó á N855 SERIES MEASURING COMPRESSION PRESSURE TESTING AND ADJUSTING MEASURING COMPRESSION PRESSURE Special tools Part Number Part Name Q ty H 795-132-6401 Injector puller 1 1 Adapter 1 T 795-502-1203 Compression gauge 1 When measuring the compression pressure be careful not to burn yourself on the exhaust pipe or to get caught in a revolving part of the engine. Adjust the valve clearance before measuring. For details see TESTING AND ADJUSTING THE VALVE CLEARANCE. 1. Loosen the locknut for injector lever 1 and remove the adjustment screw. 2. Remove push rod 2 . 3. Remove mounting bolt 3 and clamp 4 . 4. Pull out injector assembly 5 with injector puller H. 12-008 N855 SERIES TESTING AND ADJUSTING MEASURING COMPRESSION PRESSURE 5. Install adapter I and tighten clamp 4 with bolt 3 . kgm I Bolt kgm 6. Connect the hose and gauge J. 7. Disconnect wiring 6 for the .
