Yanmar 6SY Series Operation Manual page 104

PERIODIC MAINTENANCE
A
CAUTION
COOLANT HAZARD!
• Wear eye protection and
rubber gloves when you
handle Long Life engine
coolant. If contact with the
eyes or skin should occur,
flush eyes and wash
immediately with clean water.
• Failure to comply may result in
minor or moderate injury.
CAUTION
NEVER clean the coolant system
with caustic soda. The aluminum
parts may be damaged.
1. Drain the coolant from the engine. See
Drain, Flush, and Refill the Engine
Coolant on page 97.
2. Remove the connection pipe between
upper intake manifold housings.
3. Disconnect the pipe between intake
manifold and turbocharger.
4. Disconnect inlet and outlet water lines
from charge air cooler fittings. Cap the
fittings to prevent coolant spillage.
5. Remove the upper intake manifold
housing.
96
1. Upper Intake Housing
2. Seal
3. O-Ring
4. Coolant Pipe
5. Lower Intake Manifold
0000005enMarine
6. Gasket
7. Intake Air Cooler
0000175en
6. Remove the charge air cooler
7. Clean the element using
8. Clean and degrease the sealing
9. Install charge air cooler(s) using a new
10. Install upper intake manifold(s).
(1)
(7)
(6)
(5)
Figure 18
IMPORTANT
Take care to ensure that no
coolant spills from the element into
the intake manifold.
assembly from the intake manifold.
IMPORTANT
Under no circumstances should
caustic soda be used to clean the
components.
paraffin-based engine detergent only.
surfaces on the upper and lower intake
manifold housing.
gasket. Tighten bolts to 20 N·m
(177 in.-lb).
Tighten bolts to 50 N·m (37 ft-lb).
6SY Operation Manual
(3)
(4)
(2)