Westerbeke 38B FOUR Manual del operador descargar pdf (Pagina 71)

Adjust each valve's clearance

inserting a 0.010

inch (0.25 mm) feeler gauge between the rocker arm

and the valve stem.

Injection Pump Timing Adjustment

(Spill Timing)

your engine's fuel injection timing

not properly

adjusted, the engine will not operate properly and

may

difficult to start. Have the injection pump

delivery rate checked

a well-established

fuel

injection shop. Adjust the injection timing as

follows:

NOTE: The fuel shut-off lever must be in the

RUN

position while making the adjustment or

fuel will

flow

from the

fuel

injection

pump.

Refer to the illustration below when servicing the

fuel

injection pump. First remove the high-pressure

fuel

line from between the

No.

I injector and the

No.

fuel

delivery valve holder. Remove the

No.

fuel

delivery valve holder and remove the delivery valve

spring beneath the holder. Reinstall only the

delivery valve holder and reattach the high pressure

fuel line to the delivery holder. Attach it

that the

end that would connect to the

fuel

injector is

pointing away from the engine. Fuel will flow from

this line during the timing check.

RDJUST

VALVES

0.010

INCHES

(0.25

1(10

DELIYEiY

YRLYE

HOLDER

DELIVERY

V~LVE

SPRIN£

PlUJfHR

cunOl

PUIlO"

PlUN6ER

SPIIN6

Fun

CexUOl

Rlicr:

Rotate the engine's crankshaft in its normal direction

rotation to position piston

No.

I at the beginning

of its compression stroke.

Move the throttle lever to its full open position and operate the electric lift pump.

Slowly rotate the

crankshaft clockwise (as viewed from the front), catching the fuel from the

No.

I fuel line, until the

instant the fuel completely stops flowing (no drips).

this instant, the

16°

BTDC timing mark on the

crankshaft pulley should be directly aligned with the timing indicator on the front of the gear case ±

degrees.

the specified injection timing (16° BTDC) cannot be attained, adjust the timing

increasing or

decreasing the thickness

shim material under the injection pump's mounting flange to change the

injection timing point. Changing the shim thickness

0.004 inch (0.01

mm)

changes the injection

approximately one degree. To advance the timing, decrease the shim thickness,

required. To retard the

timing, increase the shim thickness,

required. Refer to your generator's Parts List

for

shim part

numbers.

WESTERBEKE GENERATORS

1 2 ... 66 67 68 69 70 71 72 73 74 75 76 ... 85 86

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Westerbeke 38B FOUR Manual del operador Pagina 71

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