hitachi — TORQUE CHART

GENERAL / Tightening Torque Service Recommendations for Split Flange IMPORTANT: 1. Be sure to clean and Inspect sealing surfaces. Scratches / roughness cause leaks and seal wear. Unevenness causes seal extru- sion. If defects cannot be pol- ished out, replace the compo- nent. 2. Be sure to use only specified O-rings. Inspect O-rings for any damage. Take care not to file O-ring surfaces. When installing an O-ring into a groove, use grease to hold it in place. 3. While lightly tightening split flange halves, check that split is centered and perpendicular to the port. Hand-tighten bolts to hold parts in place. Take care not to pinch the O-ring. 4.

Tighten bolts alternately and di- agonally, as shown, to ensure even tightening. 5. Do not use air wrenches. Using an air wrench often causes tight- ening of one bolt fully before tightening of the others, resulting in damage to O-rings or uneven tightening of bolts. Nut and Bolt Locking Lock Plate IMPORTANT: Do not reuse lock plates. Do not try to bend the same point twice. Cotter Pin IMPORTANT: Do not reuse cotter pins. Match the holes in the bolt and nut while tight- ening, not while loosening. Lock Wire IMPORTANT: Apply wire to bolts in the bolt-tightening direction, not in the bolt-loosening direction.

W105-01-01-015 W105-01-01-016 W105-01-01-008 WRONG RIGHT RIGHT W105-01-01-009 RIGHT WRONG Loosen Tighten W105-01-01-010 W1-2-4 WRONG R IGHT Bend along edge sharply