TM 5-3810-307-24-2-2
Air Intake System - General Information
The air intake system for the B Series turbocharged and aftercooled engines, Models 4BTA3.9 and 6BTA5.9,
consists of the aftercooler and connections, air crossover hardware, turbocharger, and associated hardware.
The turbocharged engines, Models 4BT3.9 and 6BT5.9 use a manifold cover in place of the aftercooler.
The air intake system for the B Series automotive engines, Models B3.9 and B5.9, consists of the turbocharger, the
charge air cooler, turbocharger-to-charge air cooler hardware, charge air cooler-to-intake manifold cover hardware,
intake manifold cover, and associated hardware. On the higher horsepower ratings of the B5.9 engine, the
turbocharger is equipped with a wastegate which limits the amount of boost pressure.
The turbocharger is cooled and lubricated with engine oil from the engine lubricating system.
The turbocharger is not repairable in accordance with the ATEC Maintenance Allocation Chart (MAC).
NOTE
If the engine experiences a turbocharger failure or any other occasion where oil
or debris can enter the charge air cooler (CAC), the CAC must be cleaned (refer
to Procedure 10-06).
