Yanmar 4LHA-HTP Operation Manual page 530

Chapter 6 Cooling Water System
5. Pressure Cap and Sub Tank
^ 1
30(1.18)
08(0.31) 8
i \ o
^1
•s
/ 7 f-/65 (2.56) -] "SX
o
(2.36)
I I I
5-5 Specifications of sub tank
Overall capacity
Full-scale position
Subtank capacity Subtank capacity Subtank capacity
Low-scale position
Part No. of subtank
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
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.
Filler cap
^ 4
A.
1.25< (76.27 in. )
1
0.8/ (48.81 in. )
1
0,2/ (1220 in. )
1
120445-44530
Mounting plate
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.
6-13
, 4LHA Series