Cummins 4BT – Turbocharger – Replacement – Installation

Install the turbocharger gasket and apply anti-seize com­pound to the mounting studs.

15 mm
Install the turbocharger.
Torque Value: 45 N®m [33 ft-lb]

13 mm, 7/16 inch
If required, loosen the turbine housing capscrews and the
compressor housing clamp to position the bearing hous­ing for installation of the turbocharger drain tube.

10 mm
Install the turbocharger lubricating oil drain tube and gas­ket.
Torque Value: 24 N«m [18 ft-lb]

13 mm
If loosened, tighten the turbocharger turbine housing cap­ screws.
Torque Value: 20 N«m [15 ft-lb]

7/16 inch
If required, loosen the compressor housing clamp and position the housing to align with the air crossover tube.
Tighten the clamp.
Torque Value: 8 N«m [72 in-lb]

Torque Value: 8 N*m [72 in-lb]

Caution: The turbocharger must be prelubricated.
Pour 50 to 60 cc [2 to 3 o z .\ of clean engine lubricating oil into the oil inlet fitting on top of the turbocharger while
spinning the turbocharger impeller to distribute the lu­bricating oil in the bearing.

16 mm and 19 mm
Install the lubricating oil supply line.
Tighten the fittings securely.
Torque Value: 35 N»m [26 ft-lb]

Screwdriver
Connect the hose to the turbochager wastegate.