Operation and maintenance manual
QSB4.5 and QSB6.7 Air Intake System
Section V - Maintenance Specifications Page V-5
Air Intake System
Specifications
Maximum Intake Restriction (clean air filter element)..............................................................254 mm H
2
O [10.0 in H
2
O]
Maximum Intake Restriction (dirty air filter element)................................................................635 mm H
2
O [25.0 in H
2
O]