Yanmar 3JH4E - Page 92

4JH4-HTE
(1)
(2)
(6)
(5)
(3)
(4)
0004560
Figure 7
1 – Coolant Tank (Heat Exchanger)
2 – Coolant Pump (Fresh Water)
3 – Seawater Drain from Seawater
Pump Cover
4 – Coolant Drain Cock
5 – Intercooler
6 – Seawater Drain from Heat
Exchanger
4JH4-HTE
0004561
(1)
(2)
(3)
Figure 8
1 – Coolant Drain Cock
2 – Seawater Drain Cock
3 – Marine Gear Cooler
Note: The drain cocks are opened before
shipping from the factory. Marine gear
ZF25A does not have a drain cock on the
clutch cooler.
NOTICE: If seawater is left inside, it may
freeze and damage parts of the cooling
system (fresh water cooler, seawater pump,
etc.) when ambient temperature is below
32°F (0°C).
1. Open the seawater drain cock on the
clutch cooler (if equipped). Allow to
drain. Open the seawater drain cock on
the intercooler (4JH4-HTE only) and
drain.
If no water drains, use a stiff brush to
remove any debris.
2. Remove four bolts attaching the side
cover of the seawater pump. Remove
the cover and drain the seawater.
3. Install cover and tighten bolts.
4. Close all the drain cocks.
LONG-TERM STORAGE
86 JH4 Series Operation Manual