Hitachi NT65MA3 Instruction Manual - Page 17

9. TROUBLESHOOTING GUIDE 9-1. Troubleshooting and Correction Problem 1) Nails cannot be driven. Possible cause ( : most-common cause) Magazine is not loaded with specified genuine nails. Magazine is loaded with abnormal nails (bent nails, abnormal collation, others). Nail feeder is abnormal (burrs, deformed or damaged). Ribbon spring is abnormal (fatigued or damaged). Magazine groove too wide or too narrow. Nail rail groove width too wide or too narrow. Nail groove in the blade guide is abnormal (burrs, deformed or damaged). Magazine cover is abnormal (deformed or damaged). Adhesive fragments and wood chips are on the magazine, nail feeder or nail rail. Inspection method Check that the magazine is correctly loaded with specified nails. Check the nail feeding section for abnormal conditions (burrs, fatigued, deformed, damaged). Check if they move smoothly after loading nails and check if the nail feeder operates smoothly. Remedy Use specified nails. Remove the abnormal nails and load the nailer with proper nails. Correct the burred or deformed portion. Replace the part. Replace the part. Replace the part. Replace the part. Correct the burred or deformed portion. Replace the part. Replace the part. After removing the adhesive fragments and wood chips, lubricate the nail rail. Air pressure is too low. O-ring in the piston is abnormal (worn or damaged). Piston bumper is abnormal. O-ring in the cylinder is abnormal (removed, deformed or damaged). Driver blade is abnormal (burrs, deformed or damaged). Bumper sheet is abnormal (square hole worn, or damaged). Cylinder inside surface is abnormal (packed with dust, or worn). Keep the nail feeder in the back position after pulling it backward and release the lock lever for idle driving. Then, check if the driver blade and guide plate (A) have returned. Check the nails can be driven at 4.9 bar (5 kgf/cm2, 70 psi). Oil Nail rail Adjust the air pressure to 4.9 to 8.3 bar (5 to 8.5 kgf/cm2, 70 to 120 psi) Replace the O-ring. Replace the piston bumper. Reassemble or replace the parts. Correct or replace the parts. Replace the parts. Remove dust and then lubricate. Replace the part. --- 14 ---