Westerbeke 55A FOUR Installationshandbuch PDF herunterladen (Seite 22)

FUEL

SYSTEM

(Continued)

FUEL

ADDITIVES

fungus or bacteria is causing fuel problems, you should

have an authorized dealer correct these problems. Then

use a diesel fuel biocide to sterilize the fuel (follow the

manufacturer's instructions).

SPARES

While the likelihood

having to service the fuel system

at sea is slim, the possibility does exist. Therefore, we

recommend that banjo washers, injector seat washers,

and a fuel filter be carried on board at all times. (See the

Spares

And

Accessories brochure"). Purchase needed

spares from your local WESTERBEKE dealer or

distributor.

a leak should develop at a banjo washer

that cannot be corrected by a simple tightening

the

fitting, replace the sealing washer with a replacement

found in the engine fuel hardware kit for your model.

PRIMING

(BLEEDING)

THE

FUEL

SYSTEM

The on-engine fuel system is virtually self priming.

Under ordinary circumstances the engine's electric fuel

lift pump, which is energized by the key switch/preheat

button, will supply a continuous flow

fuel from the

tank. This fuel is drawn through the fuel/water separator

to the engine lift pump, the primary spin-on fuel filter,

and the injection pump.

FUEL

LIFT

PUMP

WARNING:

not

allow

smoking

open

flames

near

the

fuel

system

when

servicing.

Also

provide

proper

ventilation.

it becomes necessary to bleed air from the system, use

the following procedure:

Open the bleed screw by turning the thumbscrew on

the fuel filter 1 or 2 turns. Energize the preheat button

(key

ON) for 10 to 20 seconds or do it manually using

the palm

your hand to pump the primer pump on the

top

the fuel filter housing. When fuel flows freely

from the bleed screw, tighten, but do not overtighten,

the screw.

CAUTION:

When

using

the

preheat

function,

keep

mind

that

the

preheat

elements

(glow

plugs)

are

also

energized;

take

care

not

overheat

them!

Once the fuel filter assembly is free

air and the bleed

screw tightened, use the preheat button

slowly pump

the primer pump for

10 to 20 seconds to force any air

between the filter housing and injection pump out

the

system to the tank via the return line.

In cases where excessive amounts

air exist in the

fuel system, follow the above procedure but in addition,

loosen all the high pressure injector lines (not injectors)

and crank the engine starter motor;

fuel spurts from

between the nut and the line, tighten the injector lines in

sequence and then tighten the bleed screw.

NOTE:

not

attempt this procedure on a hot engine.

WARNING:

Always

wear

protective

clothing,

safety

glasses

and

gloves

when

bleeding

high

pres-

sure

injector

lines.

AIR

CLEANER

Dual air cleaner filters are located on the top

the

engine manifold. These filters should be inspected,

cleaned, and/or replaced at maintenance periods. With

the engine turned off, remove the single hex bolt, lift the

manifold top, and the dual air cleaner filters become

accessible. When reassembling, make certain the filters

are positioned properly, and do not overtighten when

refastening the bolt.

AIR

CLEANER

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