TM 5-2420-230-24-2
B3.9 and B5.9 Series Engines
Specifications
Section E - Engine Identification
Page E-13
4B Air Intake System (nonautomotive)
4B3.9
4BT3.9
4BTA3.9
Maximum Allowable Intake
Restriction at Rated Speed
508 mm H2O
635 mm H2O
635 mm H2O
and Loaded with Dirty Air
[20 in H2O]
[25 in H2O]
[25 in H2O]
Filter Element
6B Air Intake System (nonautomotive)
6B5.9
6BT5.9
6BTA5.9
Maximum Allowable Intake Re-
striction at Rated Speed and
508 mm H2O
635 mm H2O
635 mm H2O
Loaded with Dirty Air Filter Ele-
[20 in H2O]
[25 in H2O]
[25 in H2O]
ment
L-565