TURBOCHARGER OIL LINE
(1) Open Left Engine door
(2) Check tightness of turbocharger oil
supply line (1) from oil filter head (4)
to top of turbocharger (3).
(3) Check tightness of oil drain tube (2)
from bottom of turbocharger (3) to
(a) Repair/replace oil lines if faulty
(b) If oil lines are OK, indicates
faulty oil cooler core.
OIL RETURN LINE