Ford 7.3 DIT Power Stroke Service Manual

-

~~F"

Series

Super

Dutv

Features • Description

•

8ervice

1

FOREWORD

This publication is inte

nded

to provi

de

technici

ans

and

service personnel

with the

latest

techn

ical advancements incorporated

in

the

7.3 DIT Diesel Engine.

The information contained in

this

publication will suppl

ement

information contained in available

service literature.

IMPORTANT

SAFETY

NOTICE

Appropriate

seNice

methods

and

proper repair procedures

are

essential

for

the safe,

reliable operation

of

all motor vehicles,

as

well

as,

the personal safety

of

the individual

doing t

he

work. This manual provides general directio

ns

for accomplishin

g seNice and

repair work with tested,

effect

ive techniques.

Fol

lowing them will help assure reliabili

ty.

There

are

numerous variations in procedures, techniques, tools, and parts f

or

seNicing

ve

hicles,

as

well

as,

in the skill

of

the individual doing the work. This manual cannot

possibly anticipate all su

ch

variations and provide advice

or caut

ions

as

to

each.

Accordingly, anyone who departs from the instructio

ns

provided

in

this manual must first

es

tabli

sh

that

he compromi

ses neit

her his personal safety nor the vehic

le

integrity by his

choice of methods, tools

or

parts.

The following list

contains

some

general

WARNINGS that

you should follow when you work

on a

veh

icl

e.

• Always wear safety glasses for eye protecti

on.

•

Us

e safety stands whenever a procedure requires

you

to

be under the vehicle.

•

Be

sure

that

the ignition switch is always

in the

OFF position, unless otherwise

required by the procedure.

• Never perform any seNice

to

the engine

wit

h the air cleaner removed

and

the engine

running unless a turbochar

ger

compressor inl

et

shield is installed.

• Set t

he

parking brake when working on the vehi

cle. If you

have

an

automatic

t

ra

nsmission,

set

it in

PARK

unl

ess

instr

uct

ed otherw i

se for a specific seNice

operation.

If

you have a manual transmission,

it

should be in

REVERSE

(engine

OFF)

or

NEUTRAL

(engine

ON)

unl

ess

instructed otherwi

se for a specific seNice operation.

• Operate the engi

ne

only in a well- ventilated

area

to

avo

id

the danger

of

carbon

monoxid~.

•

Keep

yourself and your clothi

ng

away from moving parts wh

en

the engine

is runn

ing,

especially the fan, belts, and t

he

turbocharger compressor.

• To prevent serious burns, avoid contact with

hot

metal parts su

ch

as

the radiator,

turbocharger pipes, exhaust manifold, tail pipe, catalytic conve

rter

and

muff

ler.

•

Do

not

smoke while worki

ng

on the vehicle.

• To avoid injury, always remove rings, watches,

lo

ose

hanging jewelry, and lo

ose

clothing before beginning

to

work on a vehicle. Tie long hair securely behind the

head

.

•

Keep hands

and

other objects clear of the radiat

or

fan bl

ades.

7.3L

DIY

Direct

Injection

Turbocharged

Diesel

Engine

7.3L

DIT

DIESEL

ENGINE

TABLE

OF

CONTENT

S

ENGINE SPECIFICATIONS .

.......

. . . .

...

.

......

.

..

. 4

New Features

....

..

.. ..

.....

...........

• . .

....

........•••

. .

....

. . ....

.4

Engine Serial Number ...

................

••.....

......

....

•..

. . . . . . .

....

.4

Emission Label .

.....

...

.....

....

......•

. .

...

......

..

..•••

........

.....

5

Hor

se

powe r Comparison ...

.....

...

.......

.

.....

..

. .

.....•••..

.....

..

....

5

Torque Comparison

.....

. .

.......

.... ....

••••.....

.....

. .••..

........... 5

PHYSICAL

ID

........

.

.........

.

...

.

... ...

.

..

. . . 6

AIR

CHARGING

SYSTEM

.....

.

............

.

....

... 13

Tu

rbo

ld ............

...

.....

....

.....•

• . .

....

.....

. .

.••

• . .... . .... . . .

13

Wastegate Control

...

....

.....

....

...

......

. .

.. .........

•••... . . .......

15

TURBO

REMOVAL

AND

INSTALLATION

...........

. .

... 18

FUEL

CHARGING

SYSTEM

....

.

....

..

........

...... 21

Injectors ... .

.....

............

..

. .

....

••.....

. . .

......•••

•........

....

21

Fu

el Filter and Supply ... . .

....

.....

......

••

.....

. .

......

•••

.....

....

...

24

High Pressure Oil System

...

......

...

.....

••....

. . . ......

. • • .

....

.......

29

NEW

AND

REVISED SENSORS

.........

.

.....

......

.

31

SPECIAL

TOROUE

DATA ...

. .

......

.

...

..

..

...

.

.... 33

7.3L DIT

ANTHOLOGY

......

.

..

..

........

. .

.....

. .

35

Fuel filter service . .........

............. ....

• • . .

....

..

. ..... ..

. .

......

. 35

DIAGNOSTIC GUIDES

AND

FORMS . . . . .

.....

....

.

.... 50

GLOSSARY

..........

.

..................

.....

. .

71

INDEX . .

.....

.

..........

. .

....

...

. . . .

........

73

1

ENGINE

SPECIFICATIONS

New

Features

E

aglne Su

iel

Numb

er

• There

Is

now an

engine seri

al number on

the

valve

cover

as

opposed

to the oil

reservoir.

•

As

with

previous

Power

Stroke eng

ine

s, the

engine serial

numbe

r is slill stamped into

the

crankcase

at

the rea

r oil cooler pad.

• The

veh

icle produ

cti

on date br

eak

for most

of tl\e material

covered

in the

fron

t secti

on

of

t1>

1s

book

is J

an.

'98, unless o

therwise

stated fn text.

4

"F"

Series

lacraaaad

Harsapawer and

Torqu

e

Charga

Air

Caalad

llactranh:ally

Controlled Wasteg

ated

Turbo

All

Split

Shot

Injectors

laap

ta

Connect ICP Oil

Lin

es

Jla

..

aignad

Fual

Systam

Econoline

Snap

ta

Cannact

ICP Oil

Linas

Radaaigaad

Fual

Supp

ly

Syst

am

All

Split

&hat

lnjacto

rs (Carryover

from

1817

Modal

Yaar

)

Chassis

Power

Train

Changes

Cha

..

ia

Mauntad

Electric

Fuel

Pump

ZF

I

Spaad

Manual

Tran

smission (F-

Series

only)

Law

&aar

Addad far

Heavy Loads

Diflarential

Ratios Availabla:

·r·

Seri

..

: 3.73, 4.10, 4.30,

4.88

lcanalina:

3.55

, 4.10, 4 .&3

Biagla

35

gallon

Fuel Tank (F-Series only

)

RENSEIOHEMeNTS
DE

D~POLLUTION

lf«::M

\WIM'IIC'I\IIIlO

Wt'

UOf1MI

'*~

NA.YitTM

llfTIJUf.AnoHA.I..

TMHUOIIIT4TIOH CONt .

1500

1500

2000

2000

2500

Engine

RPM

2500

Engine RPM

3000

3000

ENGINE

SPECIFICATIONS

250

200

ISO

100

so

0

550

500

450

350

300

3500

Eminion

L•••t

•

The

emission l

abel

Is

localed

on

lhe right

valve

cover

and

Ide

ntifi

es

lhe

engi

ne

model.

gr

oss

hor

sepower,

and fuel

delivery

rate.

Harupowar

Comparlaon

1999

·r·

Sarlo•

Peak

Horsepower

is

9%

more

than

previous

models

and

occurs

0 2700

RPM

versus 3000

RPM.

Tar•••

Ca•parlua

Similar to the

horsepower

1ncrease.

peak

torque

is

higher at

500

lb/11

between

1600

and 2300

RPM.

This

Is

a 15%

1ncrease

over

prior

models.

5

PHYSICAL

ID

Cranks

haft

• For improved strength and ease

in

machining, the crankshaft no longer has
lightening holes drilled into the connecting

rod pins.

• The counterweights are larger

to

counteract

the extra weight in the connecting rod pin.

• The engine serial number break for this
change is 576010.

Note:

The

"larger''

crankshafts

may

only

be

u

sed

In crankcases

with

serial num

bers

higher

than

571930.

Crank•

•••

• The lower section

of the

crankcase has
been modified to allow larger crankshaft
counterweights to clear the crankcase.

• The serial number break for this change is:

571930.

• This change occurred on the crankcase
prior to the crankshaft.

Note:

This

crankcase

may

be

used

with

either crankshafts described above.

Ca•shaft

• The 1999 model year engine incorporates
a chassis mounted electric luel pump.

• Due to the use

of

an electric fuel pump the

eccentric lobe on the camshaft has been
eliminated.

6

Engine Serial

# 57601 0

an

d above

Counterweig

ht

has

a

radius

Lightening
ho

le

Mechanical lift

pum

p eccentric eliminated

Engine Serial

#576009

and

below

I

Pra

Jan.

'98

0.137"

Pre. Jan.

'98

0.

43

5"

0.

402"

Under

Valve

Caver

harness

(UV

C)

I

Pos

t

Jan.

'98

Slightly

deaper

intermediate

PHYSICAL

ID

Ria1•

• The intermediate ring width has boon
increased to increase ring tension In t

he

bo

re.

• The intermediate ring has a larger chamfer

on

"s

inside

race

and

increased

w1dth

to

diStinguish

it

from

the

prior seoond nng.

Note: The lntenmediate

ring muat not

be

used

on

earlier

pistons.

Pistan•

•

The

new

piston

has

a deeper intermediate

ring groove to accommodate the new

increased intermediate ring wid

th

.

Note:

Pistons

and

rings

cannot

be

Intermixed

due

to

Increased

and

narrow

intermediate ring

widths

.

Valwa

Caver

&askat •••

UVC

Harn•••

• To reduce the num

ber

of

electrical

connections and improve reliabilit

y, the

valve cover gask

et

now uses a single 9 pin

connector (versus

two

5 pin) , for injectors

and

glow plugs.

•

Th

is

new

one

piece

des;gn

UVC

is

st1ll

removable,

and

uses larger wires

and

terminals for the glow plug circuit.

7

PHYSICAL

ID

Entin

e Harn

ess

• Similar

to

the

UVC

harness,

the

engine

harness also has two

9 pin connectors,

incorporating larger wires and terminals

for

the

glow plugs.

Valve Cavn Gask

et Breakaut Ta

al

Because of

the

new 9 pin connector,

essential

tool

#418·F221 has been

released

for

testing glow

plug

and

injector circuits.

•

The

four White

pins

are for gl

ow

plugs.

• The Black pin is

common

for

the

four

Injectors.

• Red, Green, Blue, and

Yellow

pins

are

injector ground.

Exhau

et

Up Pipn

•

To

improve joint serviceability, the exhaust

up pipes are now common for both "

E"

and

'P'

Series.

• On

previous

engines

the

exhaust up pipes

were

model specific. The previous "P'

series drivers si

de

exhaust up pipe is

shown.

8

Essential

tool

#418-F221

9

pin

valve

cover connector

Pre

Jan.

'98 '

F"

Series

side

up pipe.

Common

for

'E'

and

"F"

Series

.

0

l'llst

Jan

. '98

I'N

Jan.

'98

PHYSICAL

ID

Exhaual

Manilalds

• The driver side "F" Series exhausl manifold
has changed

co

allow the use of a comm

on

exhaust up pipe.

Maaaurln1 Exhaust

Back

Pruaara

without

Cold

Weather

Packaa•

• With the 1999 model

year

·p

Series, a

"Cold Wea

lh

er option delete" package Is

availabl

e.

If the cold

weat

her

package has

been deleted, a

ne

w procedu re for

checking exhaust back pressure

IS

deSC(lbed

below.

•

To

check exhaust back pressure

on

a

v

eh

icle !hat

is

not

equipped with an

exhaust back pressure sensor, you will

have

to

make yo

ur own cooling coils.

• The coils are

to

coot exhaust gases before

they reach the pressure gauge

10

avoid

damage

10

lhe gauge.

T

he

coil

sho

uld

be

made

oul

of

copper

t

ub

ing oblained locally.

Aller

making coil, attach tubing

10

the

exhaust manifold

by

removing !he plug

in

front

of

the right exhaust manifold where

the exhaust back pressure sensor tube

would normally

be

located.

• Use

gauge

bar tool number 014..()0761

or

equivalent

to rea

d pressure;

on vehicles

equipped with EPB th

is can

be

read using

the NGS tool.

CAUTION: TURBO WI

LL

BE HO

T.

Do

not

touch

during

or Immediately aft

er

test

.

Route

tubing away

from parts th

at

can

be

damaged

by

heat

and

keep away

from

ac,cessory

drives

and

fan.

9

PHYSICAL

10

T•r•l••

la

lat

anol

Cla•p

• The turbine inlet

now

uses a V·band style

clamp for mounting.

•

To

insure proper alignment a dowel pin

is

used as a locator.

Dll

Fill

Laca

lien

and D

lpetic

k

•

The

engine oil fill location has been

extended

to

make

it eas.er

to

change

or

add

011

to

the

engine.

•

The

dipstick

is

now

common for both ·

E"

and

·p

series. This makes

It

easi

er

to

check the oil level

on

"P' series.

Cnnkc•••

Prauura

Tnt

• Place crankca

se

pressure adapt

er

on

oil fill

extension to check pressure.

• Crankcase pressure shOuld

not

be

more

than 4 I

nches

of

wat

er

usong

the

Magnahetic gauge.

Note:

Be

sure

to

block

oH crankc

ase

ventilation

syst

em (

breather

tube)

before

perfo

rmi

ng

teat.

10

Dipstick tube

Post

Jan

. '98 '

F"

Series

thermostat

housing

Pre

Jan.

'98

Reservoir

I

Post

Jan.

'98

PHYSICAL

ID

Water

Pump

• Water pump seals are dynamic seals.
During

engine

cran~ing

,

seepage past

the

seal occurs.

• A reservoir has been added

to

the housing

to

allow

the

small amounts of seepage past

the seal

to

accumulate

and

evaporate.

• This eli

minates

the staining seen on prior

water

pumps.

Thermostat

Housing

•

To

provide

clearance for charge air cooler

piping

and improve

serviceability during

normal service operati

ons, the

•p• Series

thermostat housing is shorter, has a

th

icker

Hange and a

new

seal.

Water

Pump

Pulley

• The water pump pulley diameter has been
decreased.

• If service is required, be

su

re to use

the
proper pulley to obtain proper pump speed
a

nd

avo

id

cooli

ng

system concerns.

11

PHYSICAL

ID

lati••

Mauah

- ·r•

Sul

u

•

Wrth

the

new Super Duty "F" Ser

ies

ch

ass

is,

the driver side engine mount is

made from cast iron instead of stamped

stee

l.

Air

Claaau

• The a.r cleaner tor the 1999 model year

"P

sen

es

has

been

totally redesigned to

use a

flat

rectang ular filt

er

element

•

The

air filter housing continues to
incorporate a litter minder restnclion gauge
to mon.tor air filter

cond~ion

.

Sinal•

Man

Flywh

..

J

• A single mass flywheel replaces

the
previously utilized dual mass flywheel for
manual transmission

appiiCabons

.

• The

flywheel can be identified by the

absence or bolts that wo

ul

d normally

conn

ect

the inertia member

from

the clut

ch

surtace.

Note:

The

single mass flywheel can

only

be

used with

the

ZF

6 speed manual

12

Pre

Jan

. '

9B

'F'

Series

Left

engine

mount

No bol

ts

in

this

location

Post

Jan.

'

9B

'F'

Series

Left

en11lne

mount

Single

mass

flywheol

AIR

CHARGING

SYSTEM

Turbo

Charger

"

F"

Series

Wastegate

with

EBP

Waslegate

without

EBP

"E"

Series

All

with

EBP

-

Non-Waslegaled

Turbo

bo

lt

Waste gate

actuator

Turbo mounting bolt

Location

for

dowe

l

Exhaust

back

pressure

actuator

•

"P

Series turbochargers are wastegated in

conjunction with cha

rge air

cooling.

•

"P

Series may

be

ordered without EBP.

• AII"E" Series turbochargers are equipped
with EBP and no wastegate .

Turha

·r·

Sar

in

with Wastegate

and

EBP

• In the lro

nt

view shown, the EBP regulator
and new top down turbo to pedestal
mounting bolts

are

depicted.

• The wastegate regulates maximum speed
of the turbocharger by a

llo

wing excess
exhaust gases to bypass the turbine
housing and

be

directed into the exhaust

stream to atmosphere.

Turha •r•

Sari

..

wit

h Wastagate

and

EBP

• From the rear view, EBP and wastegate
actuators are shown. In addition, note t

he

locator dowel hole for positioning the

turbine inlet.

• As previously stated, the turbocharger

assembly

is

now attached to the pedestal

with two bolts from t

he

top. This

is

for

In

chassis removal and installation

ol tur

bo

assembly which

is

explained

in

detail

starting

on

page 17.

13

'A

I R

CHARGING

SYSTEM

Tnh

'F'

Series

with

Wulagala

aad

wilhaal

EBP

• Front view

shown

with

ESP regulator

removed

from

tUioo

pedestal.

Turbo

'F'

Sarin

with

Waatagata

aad

withaul

EBP

• Rear view shown without ESP actuator
assembly.

• The turbine

inle~

not

shown

, utilizes an

alignment

dowel

for positioning

on

the

IU11line

housing.

Turbo ' E'

Sarles

without

Waala1ala

and

with

EBP

•

Front

view

shown

with

EBP

regulator

moved

to front of pedestal and

top

down

mounting bolts.

• Becausa the

·e-

Series does not utilize
charge cooling, wastegaled turbochargers
are not incorporated

in

the Econollne

engines.

14

Thrbo

moun

ting bolt

No

EBP

regulator

No

EBP

actuator

Thrbo

mounting bolt

Wastagate

actuator

Location

for

dowel

1\irbo bolls

To waste1111te

actuator

Waste1J11te

solenoid

To

manifold

pressure

AIR

CHARGING

SYSTEM

Turbo

"E"

Sarin without

Waslagal

a and

with

EBP

Exltaust back • Rear view shown

To

air induction inlst

CAC

Houai"l

a11d

w

........

c

......

.

Note: The Inside

of

this housing will

be

damp with oil mist carry over from the
closed crankcase ventilation system.

• Oil is not

an

indicator of a turbocharger

concem

.

w

••••••••

c

....... s .......

•••

Line

a

•

With

the electronically

controned

wastegate. a pressure drlferenlial betw

een

the induction system and t

he

intake

is

used

to

regulate boost pressure, via a

duly cyCle

co

ntroll

ed

(PCM) solenoid.

15

Waolagala

Achaalar

Dparalian

• The wastegate actuator Is a spring

lOa

ded

diaphragm acted on by manifold pressure

and controlled

by

the wastegate control

(WGC)

solenoid.

•

The

wastegate control solenoid, duty cycle

controlled

by the PCM, is allowed to bleed

pressure via a hose connected to the air
intake system

for

precise control.

• Spring pressure closes the wastegate.
Note:

A tampered

or

disabled wastegate

will result In decreased performance and

potential turbocharger damage.

Waotogala Aclualar

Dlagnaallu

•

To

test the wastegate actuator, apply

regulated air pressure

to

the actuator.

starting

at

zero

11nd

slowly increasing

pressure while observing actuator

rod

movement.

• The actuator

should

start to move at 5 psi.

• The actuator should hold 5 psi lor

30seconds.

lnlaka

Ia

CAC

Hauslna

Hu

..

• The

CAC

intake

air

hOse

has

offset
diameter tnlet and outlet, this is due to the
diHerence

in

the

CAC

housing a

nd

intake

covers.

Note: H

oses

are

of

special material and

should

not

be

substituted

during

service.

16

INLET

Charge Air
Cooler

Housing

Ope

n-

Cl

osed

Open+-

---

~

Cloud

Non

Charga

Air

Culacl

W

GC

Actuator

Green
Hose

(Vacuum

)

Apply

pressure

horo

Charga

Air

Coaled

0

TURBO

REMOVAL

AND

INSTALLATION

Nate

: Be cause

of

th e

additio

n of the charge air coaling

pip

ing,

it

is

norm

al

Ia

hear sam

e tur

bo

noise (whine).

•

If

turbo noise is reported, lirst check to insure all sou

nd

insulating material

is

in

Hs

proper location,

if

not, install all insulation in prop

er

locations.

• If all

insul

ation material is

in

the proper locations, check for wheel to housing contact

at

the turbine or

compressor,

if

there are signs

of

contact then replace the turbo.

•

If

the insulation

is

pres

ent and no wheel

to

housing contact is present, the sound

may

be

normal.

Door

hinges

Sound

insulating

ma

terial

shown

from

inside

the

lend

er

Sound

insulating

material

shown

from

inside

the

vehicle

Sound

insulating

material

shown

out

of

vehicle

,

side view

Sound Insula

ting Material far

En

gina Naisa

• When diagnosing engine noise complaints,
such

as

turbo whine, you must first check

to

see

that all sound insulating material

is

in place

as

shown in accompanying

photos.

• T

he

material is in the fender and mounted

between the fender and the A·piller and

is

used

to

isolate the engine compartment

from the vehicle's interior.
There should not

be

any

holes or gaps

between the A-piller and the fender.

17

CAC

Pip

..

• First remove the two nuts holding lhe

Pow

er

Stroke cover

in

place.

• Then, loosen the four

clamps that are

holding the charge air cooler

p1pes

to the

charge air cooler housi

ng.

I

mportant:

When reinstalling clamps,

tighten

to

71

lbl/ln

(8 Nm),

to

Insure

joint

I

ntegrity

, performance, and Internal engine

protection.

CAC

Cenn

..

llen

s

Note:

Alter

removing

the

charge air pipes

It

Is n

ormal

to

aee

oil

inside

the flexi

ble

hose

a

rea

.

CAUTION: When the intake system

is

open, care must

be

used

to

avoid any

foreign

object

s f

rom

entering the engi

ne

or

charge air cooler

system

.

CAC

C•nn

..

ll•ns

• Next loosen the two clamps on both lower
ch

arg

e air cooler pi

pe conn

ections at the

charge air cooler, and

move

charge air

cooler pipes out

of

the way to access

the

turbo.

18

D

TURBO

REMOVAL

AND

INSTALLATION

CAC

Cannecllan

•

• Remove all wiring and hoses going

to

the

charge air cooter housing.

• Loosen hose clamps holding charge air
cooler housing

to

turbo and Intake covers.

Air lnduclia

n H

ue

• Loosen the

two

ctamps

hold•ng

the air

intal<e

hose to the turbo.

• Remove

the air intake

hose.

Exltau

• t

Pip

e

•

Next

lOosen

v·band

ctamp

holding exhaust

pipe to turbo.

• Move exhaust pipe

out

ot

the

~

tor turbo

removal.

•

When

reinstalling

ctamp,

tighten

to

50 tbtlin (5.6 Nm).

19

TURBO

REMOVAL

AND

INSTALLATION

lxllaaal

Jalal

Adaplar

• Loosen the v·band ctamp holding the
exhaust

in

let adapter to turbine.

• When reinstalling clamp, tighten

to

100

lbliln

(11.3 Nm).

Tarloachar1ar Aua

mlolJ

Note:

In-chassis

removal

and

installation

of t

urbo

requires

leaving

the

pedestal

attached

to t

he

engine.

• Remove

the

two

bohs

hokli

ng

the turbo

to

the mounting

ped

estal.

• When reinstalling bolts, tighten

to

35

l

bs/11

(4 Nm).

•

To

install turbo, reverse above steps.

20

Fill

Stage

Step

# 1

First

Injection

Step

# 2

FUEL

CHARGING

SYSTEM

FUEL

SUPPLY

PRESSUR

E

• INJECTION

PRESSURE

While

the

lower land

of

the

pl

un

ger c

overs

the upper

port in

the

barrel. plunger
movement increases
pressure, unseats

the

delivery

check

ball, and

begins fuel delivery

Sp

lit

Shat D

puatl

aa

Split shot Injectors provide impr

oved

exhaust
emissions and quieter engine operation,
particularly

at

Idle,

by

talloring

the

injection

of

fuel, without a decrease

In

performance.

Split shot i

nfectOrs

(prime) have been used in

Calllom1a

engines since the

1996

model year

and all

1997

Econohnes.

Now

they

are

10

all

Power

Strokes.

Plunger

21

FUEL

CHARGING

SYSTEM

0 FUEL SUPPLY PRESSURE

• INJECTION PRESSURE

22

Wh

en

the

tower land

travels

past the upper port in

the
barrel, pressure decreases
and

fuel

delivery is stowed.

Wh

en

the upper land

sea

ls

the

upper port

In

the

barrel.

as the pl

ung

er continues

to

move

down, the

delivery

cycle is completed.

Injection

Pressure

End

of

First

Injection

Step

#3

Second

Injection

Step

# 4

- Without Split-Shot
With Split-Shot

Does

not

fill

en

tire

IJl'OOve

Fuel

lUter

FUEL

CHARGING

SYSTEM

More

robust

one

piece

seal

Post

Jan.

'

98

oU

Reservoir

IRje<lor 0-rlnt•

•

The

injector

now

uses a more robust

one

piece seal

to

replace

the

two

previously

us

ed

for the center position. No change

was

made to the Injector.

• This change was Incorporated as of engine
serial number 642092.

Note:

The

O·rlngs

are

to

be

used

when

servicing

all

previous

DIT

engines.

0-rlng

will

fit

loosely

In

groove.

011

Resnvalr

T

he

new

reservoir has the fuel filter

assembly mounted to It via two bolts that

pass

through the housing.

Note:

These

bolts

are

not

open

to

oil

and

must

be

removed

for

removal

and

installation

of

fuel

filter

assembly.

In·

chassis

fuel

filter

assembly

removal

does

not

require

reservoir

removal.

•

The

oil reservoir Is

now

a two-piece design

which allows for reservoir cleaning when

required, such

as

during

an

engine

overhaul.

•

The

reseMllr

top

is

auached by

six

bolts

and

is

sealed by a one piece molded

silicone gasket.

23