Operation and maintenance manual

QSB4.5 and QSB6.7 Overhead Set
Section 8 - Maintenance Procedures at 5000 Hours or 4 Years Page 8-1
Maintenance Procedures - Overview
General Information
All maintenance checks and inspections listed in previous
maintenance intervals must also be performed at this
time, in addition to those listed under this maintenance
interval.
Overhead Set
Preparatory Steps
WARNING
Batteries can emit explosive gases. To reduce the
possibility of personal injury, always ventilate the
compartment before servicing the batteries. To
reduce the possibility of arcing, remove the negative
(-) battery cable first and attach the negative (-)
battery cable last.
• Disconnect the batteries. Refer to the original
equipment manufacturer (OEM) service manual.
Remove
WARNING
Wear appropriate eye and face protection when using
compressed air. Flying debris and dirt can cause
personal injury.
Prior to removing any components, use compressed air to
remove any loose debris from around the mounting
fasteners and sealing joints.