Yanmar 4LHA-HTP User Manual

Chapter 6 Cooling Water System
5. Pressure Cap and Sub Tank
, 4LHA Series
^1
Filler cap
^4
A.
5-7 Precautions on usage of the sub tank
(1) Check the sub tank when the engine is cool and refill
with fresh water as necessary to bring the water level
between the low and full marks.
(2) Check the overflow pipe and replace if bent or cracked.
Clean out the pipe if it is clogged up.
30(1.18)
08(0.31) 8
i \ o
^1
/7 f-/65 (2.56) -] "SX
(2.36)
I I I
•s
o
5-5 Specifications of sub tank
Subtank capacity
Overall capacity 1.25< (76.27 in.
1
)
Subtank capacity
Full-scale position
0.8/ (48.81 in.
1
)
Subtank capacity
Low-scale position
0,2/ (1220 in.
1
)
Part No. of subtank
120445-44530
5-6 Mounting the sub tank
(1) The sub tank is mounted at approximately the same
height as the heat exchanger (fresh water tank),
(allowable difference in height: 300mm (11.8110in.) or
less)
(2) The overflow pipe should be less than 1000mm
(39.3701 in.) long, and mounted so that it does not sag
or bend.
Overflow tube
Sub tank
Mounting plate
NOTE: Make sure that the overflow pipe of the sub tank is
not submerged in bilge. If the overflow pipe is
submerged in bilge, water in the bilge will be
siphoned into the fresh water tank when the water
is being cooled.
6-13

Yanmar 4LHA-HTP Specifications

General

Brand	Yanmar
Model	4LHA-HTP
Category	Engine
Language	English