TM 5-2420-230-24-2
Turbocharger Turbine Seal Leaks (010-049)
B3.9 and B5.9 Series Engines
Page 10-44
Section 10 - Air Intake System - Group 10
Black Light (DC), Part No. 3824754
Use a high-intensity black light, Part No. 3377253 or
3377394, to inspect the turbine outlet for leaks.
A dark blue glow indicates a fuel leak. Refer to Procedure
007-044. A yellow glow indicates an oil leak.
If oil is found on the turbine housing, remove the oil drain
line, and check for restrictions. Clear any restrictions found,
or replace damaged components as required.
If the engine is equipped with a turbocharger oil drain fitting
with a screen, remove the fitting, and check to make sure
the screen is clean.
If the oil drain line is not restricted, remove the turbo-
charger. Refer to Procedure 010-033.
Black Light, Part No. 3829754 or 3824524
Use a high-intensity black light, Part No. 3829754 or
3824524, to inspect the turbine inlet for leaks.
A yellow glow indicates an oil leak from the engine.
If a yellow glow is not seen in the turbine inlet, replace the
turbocharger. Refer to Procedure 010-033.
L-1168