Exhaust System; Construction; Mixing Elbow Inspection - Yanmar 3YM30 Service Manual

7. Intake and exhaust system

7.2 Exhaust system

7.2.1 Construction

There are two types of mixing elbows, the L-type and the U-type. The mixing elbow is attached to the
exhaust manifold.
L-type
Mixing elbow
Heat exchanger
(L-type mixing elbow)

7.2.2 Mixing elbow inspection

(1) Clean dirt and scale out of the gas and cooling water lines.
(2) Repair crack or damage to welds, or replace.
(3) Inspect the gasket packing and replace as necessary.
Seawater
Exhaust elbow
151R1
U-type
Mixing elbow
Joint
Heat exchanger
Optional
(U-type mixing elbow)
Seawater