Yanmar 4BY3-180Z Specifikace stáhnout pdf (Strana 76)

Draining the Seawater Cooling

System

CAUTION! DO NOT drain the coolant

system. A full coolant system will

prevent corrosion and frost damage.

CAUTION! If seawater is left inside of the

engine, it may freeze and damage parts

of the cooling system when the ambient

temperature is below 0°C (32°F).

NOTICE: If water fails to drain from any open

drain cock or port, remove the cock

completely and probe the opening with a

small piece of wire to loosen debris.

0006575

(1)

(4)

(3)

(2)

Figure 1

WARNING! NEVER drain the seawater

cooling system if the engine is hot.

Steam and hot fluid will escape and

seriously burn you. Allow the engine to

cool before attempting to opening the

drain cocks.

1. Open the lower seawater drain cock

(Figure 1, (3)) located in the piping

between the seawater pump and

hydraulic oil cooler. Allow to drain.

2. Open the drain cock (Figure 1, (4)) on

the bottom of the charge air cooler.

3. Remove the seawater pump cover. See

your authorized Yanmar dealer or

distributor.

4. Remove zinc anodes from the heat

exchanger (Figure 1, (2)) and charge

air cooler (Figure 1, (1)) and allow

water to drain from housings.

5. Inspect condition of zinc anodes. Install

anodes. See Replacing the Zinc

Anodes on page 53. NOTICE: Do not

use thread sealer or thread sealing tape

when installing zinc anodes. Anodes

must make good metal-to-metal contact

to perform properly.

6. Close all drain cocks.

LONG-TERM STORAGE

70 BY Series Operation Manual

1 2 ... 71 72 73 74 75 76 77 78 79 80 81 ... 87 88

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Yanmar 4BY3-180Z Specifikace Strana 76

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Yanmar 4BY3-180Z Specifikace Strana 76

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