Ford F-750 - 4. Intake and Exhaust Manifolds ��; 5. Rocker Mechanism, Cylinder Head, Valves, Valve Lash Adjustment, and Valve Timing

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Section 3- Engine Removal

and

Installation

plat

stall

the

floor

panel

screws

stall

the

bolts

securing

the

cross

member

support

the

right

and

left

wheel

~ousing

sta

the

eng

cover

base

plate

screws.

stall

the

sheet

eta

cover

between

the

engin

cover

and

dash

panel.

sta

the

master

brake

cylinder

inspection

plate.

sta

left

floor

plate.

Conn

ect

the

accelerator

rod

and

dimmer

switc

Position

the

bber

mat

over

the

brake

pedal

opening

then

install

the

peda

opening

plate

and

pad.

Fill

the

radiator.

Rem

ove

the

tape

from

the

carbure-

tor

air

horn.

Start

the

gine

and

check

for

coolant

and

oil leaks.

sta

the

air

cleaner

engine

cover

bracket

then

install

the

air

cle

ner

and

tube.

Install

the

operator's

seat

and

bracket

INTAKE AND EXHAUST MANIFOLDS

e foll

owing

insp

ection

procedures

are

plicable

new

and

sed

manifolds.

a. Cleaning

and

Inspection.

move

the

manifolds

. W

ash

grease, oil, a

dirt

from

the

outside

the

manifold.

Cle

the

inside

the

man

ifold

with

round,

bristle

brush

attached

flexible

wire

handle.

Dry

with

compressed

air.

spect

mating

flanges of

the

intake

manifolds

for

crac

ks, nicks,

burrs

scratches.

Check

the

flatness of

ese

surfaces

indicated

in fig. 8.

Check

the

fuel-air

passages

and

the h

eat

riser

for

restrictions.

Check

the

manif

old

openings

for

proper

alignme

with

their

resp

tiv

lind

ead

ports.

Impr

ope

r a

gnme

may

result

in a loss of

power.

Insp

ect

the

entire

manifold

for

crac

visible

casting

defects

which

wou

make

unfit for

further

service

spect

the

exhaust

manifold

for

burned

out

spots,

crack

and

weak

sections.

Repair

Dress

nick

warpe

mating

urf

aces

a s

urf

ace

plate.

inor

nicks,

burr

atc

may

removed

with

fil

move

all

obstr

ctio

ns fr

intake

anifold

pas-

sages. R

ace

ked

severely

warped

manifolds

those

manifolds

which

contain

unr

emova

ble

obstructions.

Replace

defective

exhau

manifolds.

CAUTION

: R e

all

filings

anel

for

eign

matt

that

may

ered t.he m_

anijold

a$ a r

ult

pair

work.

6261

Fig.

8-Checking

Flafness

fhe

Infake

Manilold

Mounting

Flanges

ROCKER MECHANISM, CYLINDER HEAD, VALVES, VALVE LASH

ADJUSTMENT,

AND

VALVE TIMING

This

sectio

covers

the

inspe

ction

repair

proced-

ure

applicab

the

rocker

mechanism

cylinder

head

and

lves.

add

ition,

the

methods

sed

eck

lve

timin

g are given.

a. Rocker Mechanism.

(

CLEANING

AND

TIO

Rem

ove

sassemb

the

rocker

mechanism.

the

I. D . of

the

rocker

arm

bore

and

the

O. D.

the

rocker

arm

shaft,

the

location

the

rocker

arms,

against

specifi-

cations. Make s

ese

surfaces

are

free of scuff

scores, nicks,

scratches.

Inspe

the

rock

arms

for

grooved

pad

Check

the

rocker

djusting

scr

ews

and

ock

nut

s for

stripped

broken

threads,

and

ban

the

screw

for

nicks

and

scr

atches.

Mak

sure

the

adjusting

rew

turn

the

roc

ker

arms.

spect

the

ocating

springs

for

crac

other

signs

fai

lur

spect

the

oil

drain

tube

for

crac

arp

bends.

Check

the

push

rod

between

ball

and

cup

ers

wit

h a

dial

indicator

for

conformance

specifications

(fig.

9).

Check

the

ban

end

and

sock

end

the

push

rods

for

nick

grooves,

roughness.

NOTE:

rou

gh check

for

push

roels can

made

while

in.talled

e eng

ine

rotat-

Main Page

Ford F-750 - 4. Intake and Exhaust Manifolds ; 5. Rocker Mechanism, Cylinder Head, Valves, Valve Lash Adjustment, and Valve Timing

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