Tightening And Retightening Torque Of Bolts And Nuts - Hitachi Zaxis 33U-5A Operator's Manual

Tightening and Retightening Torque of Bolts and
Nuts
--- every 250 hours (first time after 50 hours)
Check tightness after the first 50 hours then every 250 hours.
Tighten to torque shown if any are loose. Bolts and nuts should
be replaced with those of the same or higher grade.
For tightening nuts and bolts other than specified in the table
below, refer to the Tightening Torque Chart at the end of this
section.
IMPORTANT: Check and tighten bolts and nuts using a
torque wrench.
MAINTENANCE
7-96