TURBOCHARGER
Worn journal or bearing
Inspection (Cont’d)
Replace turbocharger assembly
I Condition 3 Excessively high oil consumption or exhaust shows pale blue smoke I
Probable cause Corrective action
Oil leak at the connection of lubricating oil passage Correct the connection
1. Inspect turbine and compressor wheel as
follows
Visually check for cracks, clogging, deformity
or other damage
Revolve wheels to make sure that they turn
freely without any abnormal noise or friction
Measure play in axial direction
Play (axial direction):
0.013.0.091 mm (0.0005 - 0.0036 in)
SEF726B
2 Check operation of by-pass valve controller
Move by-pass valve to make sure that
it is not
sticking or scratched.
Measure rod end play of the bypass valve con-
troller
Do not apply more than 66.7 kPa (500 mmHg,
19.69 mHg) pressure to controller diaphragm
0.38 mm (0.0150 in)/51.3 - 56.7 kPa
(385 - 425 mmHg, 15.16 - 16.73 inHg)
By-pass valve controller strokelpressure.
,vMercury manometer
,-By-parr valve controller
SEC7278
Always replace the turbocharger as an assembly if
faultv
EF & EC-67
