Westerbeke 38B FOUR Manual do Operador descarregar pdf (Página 89)

Valve Clearance

Adjustment

38B FOUR and W 42B FOUR Engines)

CAUTION

Adjust the valve clearance when the

engine is cold.

Tighten the cylinder head bolts

the

specHied torque before adjusting the

valves. (See page 85.)

TDC

MARK

Position

for

Cylinder.

No.1

and

Pull off the air breather pipe from the rock-

er cover, and take off the rocker cover

bolts and the rocker cover.

~'"''

Adjust the valve clearances

atTDC

(fop

TOC

MARK

Dead Center) for each cylinder when they

Po.

i t

ion

for

are on their compression stroke. Remem- C y 1 i n

r s

berthe engine's firing order

1-3-4-2. The

No.2

and

engine's valves must be adjusted in this

order while the

valves are closed. You

may

find

that

turning

the

engine's

crankshaft

more easily accomplished

when

the

engine's

glow

plugs

are

removed before the crankshaft

rotated.

CRANKSHAFT

PULLEY

Rotate the engine in the normal direction

rotation placing the

NO.1

cylinder at the

top

its compres-

sion stroke. The TDC mark on the crankshaft

pulley should be in line with the pointer on the front of the

gear case cover, and the

valves for the No.1 cylinder should be closed.

Now

adjust the intake and ex-

haust

valves for cylinder NO.1.

After adjusting the valves for cylinder No.1, rotate the front crankshaft pulley clockwise 180" so the TDC

mark on the

pulley is positioned approximately in the position shown in the illustration shown above for

cylinder

No.3.

Now

adjust the intake and

exhaust

valves for cylinder NO.3.

Rotate the crankshaft pulley clockwise

another

180" and adjust the valve clearances

for

the Intake and exhaust valves for cylinder

No.4.

Rotate the crankshaft pulley clockwise

another 180" and adjust the valve clearances

for the intake and exhaust valves for cylinder

NO.2.

Adjust each valve's clearance

inserting a 0.010

inch (0.25 mm) feeler gauge between the rocker

arm and the

valve stem.

ADJUST

VALVES

0.010

INCHES

(0.25

MMJ

Westerbeke Diesel Engines

1 2 ... 84 85 86 87 88 89 90 91 92 93 94 ... 107 108

Comentários a estes Manuais

Sem comentários

Westerbeke 38B FOUR Manual do Operador Página 89

Comentários a estes Manuais

Manuais e produtos relacionados com Motor Westerbeke 38B FOUR