International VT 275 V6 User manual

®
VT 275 V6 ENGINE
model year 2005

2
FORWARD
International®VT 275 V6 Engine
This publication is intended to provide technicians and service personnel with an overview of technical features of the
International®VT 275 Diesel Engine. The information contained in this publication will supplement information contained in available
service literature. Consult the latest SERVICE and DIAGNOSTIC manuals before conducting any service or repairs.
Safety Information
This manual provides general and specific service procedures
and repair methods essential for reliable engine operation and
your safety. Since many variations in procedures, tools, and
service parts are involved, advice for all possible safety
conditions and hazards cannot be stated.
Departure from instructions in this manual or disregard of
warnings and cautions can lead to injury, death, or both, and
damage to the engine or vehicle.
Read safety instructions below before doing service and test
procedures in this manual for the engine or vehicle. See related
application manuals for more information.
Safety Instructions
V
Ve eh hi ic cl le e
• Make sure the vehicle is in neutral, the parking brake is set,
and the wheels are blocked before doing any work or
diagnostic procedures on the engine or vehicle.
W
Wo or rk kA Ar re ea a
• Keep area clean, dry and organized.
• Keep tools and parts off the floor.
• Make sure the work area is ventilated and well lit.
• Make sure a First Aid Kit is available.
S
Sa af fe et ty yE Eq qu ui ip pm me en nt t
• Use correct lifting devices.
• Use safety blocks and stands.
P
Pr ro ot te ec ct ti iv ve eM Me ea as su ur re es s
• Wear protective glasses and safety shoes (do not work in
bare feet, sandals, or sneakers).
• Wear appropriate hearing protection.
• Wear correct clothing.
• Do not wear rings, watches, or other jewelry.
• Restrain long hair.
F
Fi ir re ep pr re ev ve en nt ti io on n
• Make sure charged fire extinguishers are in the work area.
N
NO OT TE E: :Check the classification of each fire extinguisher to
ensure that the following fire types can be extinguished.
1. Type A - Wood, paper, textiles, and rubbish
2. Type B - Flammable liquids
3. Type C - Electrical equipment
B
Ba at tt te er ri ie es s
• Batteries produce highly flammable gas during and after
charging.
• Always disconnect the main negative battery cable first.
•Always connect the main negative battery cable last.
• Avoid leaning over batteries.
• Protect your eyes.
• Do not expose batteries to open flames or sparks.
• Do not smoke in workplace.
C
Co om mp pr re es ss se ed dA Ai ir r
• Limit shop air pressure for blow gun to 207 kPa (30psi).
• Use approved equipment.
• Do not direct air at body or clothing.
• Wear safety glasses or goggles.
• Wear hearing protection.
• Use shielding to protect others in the work area.
T
To oo ol ls s
• Make sure all tools are in good condition.
• Make sure all standard electrical tools are grounded.
• Check for frayed power cords before using power tools.
F
Fl lu ui id ds sU Un nd de er rP Pr re es ss su ur re e
• Use extreme caution when working on systems
under pressure.
• Follow approved procedures only.
F
Fu ue el l
• Do not over fill fuel tank. Over fill creates a fire hazard.
• Do not smoke in the work area.
• Do not refuel the tank when the engine is running.
R
Re em mo ov va al lo of fT To oo ol ls s, ,P Pa ar rt ts s, ,a an nd dE Eq qu ui ip pm me en nt t
• Reinstall all safety guards, shields and covers after servicing
the engine.
• Make sure all tools, parts, and service equipment are
removed from the engine and vehicle after all work is done.

3
International®VT 275 V6 Engine
TABLE OF CONTENTS
OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
COMPONENT LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
DESIGN FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
ELECTRONIC CONTROL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
AIR MANAGEMENT SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
FUEL SUPPLY SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
FUEL MANAGEMENT SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
INJECTOR OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
LUBRICATION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
COOLING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
UNIQUE REPAIR PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
DIAGNOSTIC PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
DIAGNOSTIC TROUBLE CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
ENGINE & CHASSIS SCHEMATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
POWER DISTRIBUTION CENTER FUSES . . . . . . . . . . . . . . . . . . . . . . . . . . .104
GLOSSARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

4

5
International®VT 275 V6 Engine
DIRECT INJECTION TURBOCHARGED DIESEL ENGINE
• 90° V6
• Offset Crankpins
• Rear Gear Train
• Primary Balancer
• Regulated Two-Stage Turbocharging System
• Four Valves per Cylinder
• Cooled Exhaust Gas Recirculation
• Electro-Hydraulic Generation 2 Fuel Injection System
• Top Mounted Oil and Fuel Filters
VT 275 FEATURES

VT 275 OVERVIEW
Slide Title Goes Here
6International®VT 275 V6 Engine
VT 275 ENGINE SPECIFICATIONS
Engine Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-stroke, direct injection diesel
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . V6, pushrod operated four valves / cylinder
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275 cu. in. (4.5 liters)
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.74 in. (95 mm)
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.134 in. (105 mm)
Compression Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.0:1
Aspiration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Twin turbocharged and charge air cooled
Rated Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 hp @ 2700 rpm
Peak Torque . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440 lb-ft @ 1800 rpm
Engine Rotation, Facing the Flywheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Counterclockwise
Injection System . . . . . . . . . . . . . . . . . . . . . . . . . Electro-hydraulic generation 2 fuel injection
Cooling System Capacity (Engine Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 quarts
Lube System Capacity (Engine Only) . . . . . . 13 quarts with oil filter (14 quarts at overhaul)
0
50
100
150
200
250
300
350
400
450
500
600 800
1000 1200
1400
1600
1800
2000
2200
2400
2600
2800
3000
3200
3400
3600
0
25
50
75
100
125
150
175
200
225
250
Torque (ft-lb)
Power (HP)
Engine Speed (RPM)
Load (ft-lb)
Power (HP)
Power & Torque Curve
Horsepower and Torque
• The VT 275 engine is offered with only one
horsepower and torque rating for the 2005
model year. The engine creates 200
horsepower at 2700 rpm and 440 lb-ft of
torque at 1800 rpm. The engine has a
high idle speed of 2775 rpm with
automatic transmission. The engine idle
speed is set at 700 rpm and is not adjustable.

7
Engine Serial Number
• The Engine Serial Number (ESN) for the
VT 275 is located on a machined surface
at the left rear corner of the crankcase just
below the cylinder head.
• The ESN identifies the engine family, the
build location, and the sequential
build number.
• Engine Serial Number Example
4.5HM2Y0135617
4.5 = Engine displacement
H = Diesel, Turbocharged
M2 = Motor Truck
Y = Huntsville
0135617 = Build Sequence
Emissions Label
• The Environmental Protection Agency
(EPA) emissions label is on top of the
breather, toward the front, on the left valve
cover. The label includes the following:
-Advertised horsepower rating
-Engine model code
-Service application
-Emission family and control system
-Year the engine was certified to meet EPA
emission standards.
Cylinder Numbering
• The cylinders on the VT 275 are numbered
from the front of the right bank 1, 3, 5 and
from the front of the left bank 2, 4 and 6.
• The engine firing order is 1-2-5-6-3-4
2
4
65
3
1
Front
LR
International®VT 275 V6 Engine
VT 275 OVERVIEW

COMPONENT LOCATIONS - FRONT OF ENGINE
8International®VT 275 V6 Engine
PPOOWWEERRSSTTEEEERRIINNGG
PPOOWWEERRSSTTEEEERRIINNGG
PPUUMMPPBBRRAACCKKEETT
PPUUMMPPBBRRAACCKKEETT
OOIILLPPUUMMPPCCOOVVEERR
OOIILLPPUUMMPPCCOOVVEERR
BBEELLTTTTEENNSSIIOONNEERR
BBEELLTTTTEENNSSIIOONNEERR
BBAANNJJOOBBOOLLTTWWIITTHH
BBAANNJJOOBBOOLLTTWWIITTHH
CCHHEECCKKVVAALLVVEE
CCHHEECCKKVVAALLVVEE
IINNTTAAKKEEMMAANNIIFFOOLLDD
IINNTTAAKKEEMMAANNIIFFOOLLDD
MMAATTSSEENNSSOORR
MMAATTSSEENNSSOORR
AAIIRRIINNLLEETTHHEEAATTEERR
AAIIRRIINNLLEETTHHEEAATTEERR
FFUUEELLTTUUBBEETTOORRIIGGHHTTBBAANNKK
FFUUEELLTTUUBBEETTOORRIIGGHHTTBBAANNKK
SSMMOOOOTTHHIIDDLLEERRPPUULLLLEEYY
SSMMOOOOTTHHIIDDLLEERRPPUULLLLEEYYAAIIRRIINNLLEETT
AAIIRRIINNLLEETT
HHEEAATTEERRSSUUPPPPLLYYTTUUBBEE
HHEEAATTEERRSSUUPPPPLLYYTTUUBBEE

COMPONENT LOCATIONS - LEFT FRONT OF ENGINE
9
International®VT 275 V6 Engine
BBRREEAATTHHEERR
BBRREEAATTHHEERR
SSMMOOOOTTHHIIDDLLEERRPPUULLLLEEYY
SSMMOOOOTTHHIIDDLLEERRPPUULLLLEEYY
CCOOOOLLAANNTTOOUUTTLLEETT
CCOOOOLLAANNTTOOUUTTLLEETT
HHEEAATTEERR
HHEEAATTEERR
RREETTUURRNNTTUUBBEE
RREETTUURRNNTTUUBBEE
GGRROOOOVVEEDDIIDDLLEERRPPUULLLLEEYY
GGRROOOOVVEEDDIIDDLLEERRPPUULLLLEEYY

COMPONENT LOCATIONS - LEFT SIDE OF ENGINE
10 International®VT 275 V6 Engine
CCMMPPSSEENNSSOORR
CCMMPPSSEENNSSOORR
SSUUPPPPLLYYFFRROOMMFFUUEELLPPUUMMPP
SSUUPPPPLLYYFFRROOMMFFUUEELLPPUUMMPP
AANNDDPPRRIIMMAARRYYFFIILLTTEERR
AANNDDPPRRIIMMAARRYYFFIILLTTEERR
FFUUEELLRREETTUURRNNTTOOTTAANNKK
FFUUEELLRREETTUURRNNTTOOTTAANNKK
LLEEFFTTBBAANNKK
LLEEFFTTBBAANNKK
GGLLOOWWPPLLUUGGSS
GGLLOOWWPPLLUUGGSS
OOIILLLLEEVVEELL
OOIILLLLEEVVEELL
GGAAUUGGEE
GGAAUUGGEE
AAIIRRIINNLLEETTDDUUCCTT
AAIIRRIINNLLEETTDDUUCCTT

COMPONENT LOCATIONS - LEFT REAR OF ENGINE
11
International®VT 275 V6 Engine
LLIIFFTTIINNGGEEYYEESS
LLIIFFTTIINNGGEEYYEESS
LLEEFFTTBBAANNKK
LLEEFFTTBBAANNKK
EEXXHHAAUUSSTTMMAANNIIFFOOLLDD
EEXXHHAAUUSSTTMMAANNIIFFOOLLDD
RREEAARRCCOOVVEERR
RREEAARRCCOOVVEERR
IIPPRRAANNDD
IIPPRRAANNDD
HHEEAATTSSHHIIEELLDD
HHEEAATTSSHHIIEELLDD

COMPONENT LOCATIONS - REAR OF ENGINE
12 International®VT 275 V6 Engine
FFUUEELLFFIILLTTEERRHHOOUUSSIINNGG
FFUUEELLFFIILLTTEERRHHOOUUSSIINNGG
OOIILLFFIILLTTEERRHHOOUUSSIINNGG
OOIILLFFIILLTTEERRHHOOUUSSIINNGG
EEXXHHAAUUSSTTTTUUBBEEAASSSSEEMMBBLLYY
EEXXHHAAUUSSTTTTUUBBEEAASSSSEEMMBBLLYY
HHIIGGHHPPRREESSSSUURREEPPUUMMPPCCOOVVEERR
HHIIGGHHPPRREESSSSUURREEPPUUMMPPCCOOVVEERR
TTUURRBBIINNEEOOUUTTLLEETT
TTUURRBBIINNEEOOUUTTLLEETT

COMPONENT LOCATIONS - RIGHT REAR OF ENGINE
13
International®VT 275 V6 Engine
HHIIGGHHPPRREESSSSUURREECCOOMMPPRREESSSSOORRHHOOUUSSIINNGG
HHIIGGHHPPRREESSSSUURREECCOOMMPPRREESSSSOORRHHOOUUSSIINNGG
UUPPPPEERROOIILLPPAANN
UUPPPPEERROOIILLPPAANN
LLOOWWEERROOIILLPPAANN
LLOOWWEERROOIILLPPAANN
CCOOOOLLAANNTT
CCOOOOLLAANNTT
HHEEAATTEERR
HHEEAATTEERR

COMPONENT LOCATIONS - RIGHT SIDE OF ENGINE
14 International®VT 275 V6 Engine
TTUURRBBOOCCHHAARRGGEERRCCRROOSSSSOOVVEERRTTUUBBEE
TTUURRBBOOCCHHAARRGGEERRCCRROOSSSSOOVVEERRTTUUBBEE
OOUUTTLLEETTTTOOCCHHAARRGGEEAAIIRRCCOOOOLLEERR
OOUUTTLLEETTTTOOCCHHAARRGGEEAAIIRRCCOOOOLLEERR
IICCPP
IICCPP
SSEENNSSOORR
SSEENNSSOORR
CCKKPPSSEENNSSOORR
CCKKPPSSEENNSSOORR
LLOOWWEERR
LLOOWWEERR
CCRRAANNKKCCAASSEE
CCRRAANNKKCCAASSEE
CCRRAANNKKCCAASSEE
CCRRAANNKKCCAASSEE
RRIIGGHHTTBBAANNKK
RRIIGGHHTTBBAANNKK
GGLLOOWWPPLLUUGGSS
GGLLOOWWPPLLUUGGSS

COMPONENT LOCATIONS - RIGHT FRONT OF ENGINE
15
International®VT 275 V6 Engine
WWAATTEERRPPUUMMPP
WWAATTEERRPPUUMMPP
PPUULLLLEEYY
PPUULLLLEEYY
AANNDDFFAANNDDRRIIVVEE
AANNDDFFAANNDDRRIIVVEE
PPNNEEUUMMAATTIICCAACCTTUUAATTOORR
PPNNEEUUMMAATTIICCAACCTTUUAATTOORR
BBOOOOSSTTCCOONNTTRROOLLSSOOLLEENNOOIIDD
BBOOOOSSTTCCOONNTTRROOLLSSOOLLEENNOOIIDD
MMAAPP
MMAAPP
SSEENNSSOORR
SSEENNSSOORR
EECCTT
EECCTT
SSEENNSSOORR
SSEENNSSOORR

COMPONENT LOCATIONS - TOP OF ENGINE WITHOUT HARNESS
16 International®VT 275 V6 Engine
HHIIGGHHPPRREESSSSUURREEPPUUMMPP
HHIIGGHHPPRREESSSSUURREEPPUUMMPP
TTUURRBBOOCCHHAARRGGEERR
TTUURRBBOOCCHHAARRGGEERR
OOIILLSSUUPPPPLLYYLLIINNEE
OOIILLSSUUPPPPLLYYLLIINNEE
IINNJJEECCTTOORRCCOONNNNEECCTTOORRSS
IINNJJEECCTTOORRCCOONNNNEECCTTOORRSS
EEOOPPSSWWIITTCCHH
EEOOPPSSWWIITTCCHH
EEOOTTSSEENNSSOORR
EEOOTTSSEENNSSOORR
LLOOWWPPRREESSSSUURREETTUURRBBOOCCOOMMPPRREESSSSOORRHHOOUUSSIINNGG
LLOOWWPPRREESSSSUURREETTUURRBBOOCCOOMMPPRREESSSSOORRHHOOUUSSIINNGG
EEGGRRVVAALLVVEE
EEGGRRVVAALLVVEE
HHIIGGHHPPRREESSSSUURREETTUURRBBIINNEEHHOOUUSSIINNGG
HHIIGGHHPPRREESSSSUURREETTUURRBBIINNEEHHOOUUSSIINNGG

COMPONENT LOCATIONS - TOP OF ENGINE WITH HARNESS
17
International®VT 275 V6 Engine
IINNJJEECCTTOORRHHAARRNNEESSSSCCOONNNNEECCTTOORR
IINNJJEECCTTOORRHHAARRNNEESSSSCCOONNNNEECCTTOORR
MMAAFFSSEENNSSOORRCCOONNNNEECCTTOORR
MMAAFFSSEENNSSOORRCCOONNNNEECCTTOORR
((SSEENNSSOORRNNOOTTSSHHOOWWNN))
((SSEENNSSOORRNNOOTTSSHHOOWWNN))
AALLTTEERRNNAATTOORRFFUUSSIIBBLLEELLIINNKKSS
AALLTTEERRNNAATTOORRFFUUSSIIBBLLEELLIINNKKSS
((AALLTTEERRNNAATTOORRNNOOTTSSHHOOWWNN))
((AALLTTEERRNNAATTOORRNNOOTTSSHHOOWWNN))
BBOOOOSSTTCCOONNTTRROOLLSSOOLLEENNOOIIDD
BBOOOOSSTTCCOONNTTRROOLLSSOOLLEENNOOIIDD
HHAARRNNEESSSSTTOO
HHAARRNNEESSSSTTOO
CCHHAASSSSIISSMMOOUUNNTTEEDD
CCHHAASSSSIISSMMOOUUNNTTEEDD
EECCMM//IIDDMM
EECCMM//IIDDMM

VT 275 DESIGN FEATURES
18
Cylinder Head Assembly
• The VT 275 has an aluminum rocker arm
carrier for each cylinder head. The carrier
holds the fulcrum plates and the attached
rocker arms and can be removed as an
assembly from the cylinder head without
removing the rocker arms.
• Each rocker arm pivots on a steel ball
located by detents in the fulcrum plate.
Four head bolts on each cylinder head
pass through the two single and two dual
fulcrum plates serving to clamp the plates
to the carrier.
• The cylinder head is sealed to the
crankcase deck surface with a shim type
gasket that must be replaced if any of the
head bolts are removed. The 14mm head
bolts are torque to yield and cannot
be reused.
• The carrier is sealed to the cylinder head
with a push-in-place gasket. The cylinder
head and carrier are clamped to the
crankcase with eight 14mm bolts. Six
additional 8mm bolts around the perimeter
clamp the carrier to the cylinder head and
four additional 8mm bolts serve to clamp
the top of the head to the crankcase. Two
hollow dowels in the cylinder head are
used to align the rocker arm carrier to the
cylinder head.
Rocker Arm Carrier
• The rocker arm carrier serves as an
attachment point for the fulcrum plates and
the rocker arms. In addition to the head
bolts, single fulcrum plates are attached to
the rocker arm carrier with one 8mm bolt.
The dual fulcrum plates are attached with
two 8mm bolts. The fulcrum plates are
marked with E and I as assembly aids to
show the valves they support. The E and I
must be visible after assembly to the head.
In addition, the carrier provides a passage
for each snap-in-place injector pass-
through and the push-in-place glow
plug connectors.
International®VT 275 V6 Engine
IINNJJEECCTTOORR
PPAASSSS--
TTHHRROOUUGGHHDDUUAALLFFUULLCCRRUUMMPPLLAATTEE
HHEEAADDBBOOLLTTSS
SSIINNGGLLEE
FFUULLCCRRUUMM
PPLLAATTEEGGLLOOWWPPLLUUGG
CCOONNNNEECCTTOORROOPPEENNIINNGG
RROOCCKKEERRAARRMMCCAARRRRIIEERR
RROOCCKKEERRAARRMMCCAARRRRIIEERR
RROOCCKKEERRAARRMM
RROOCCKKEERRAARRMM
RROOCCKKEERRAARRMMFFUULLCCRRUUMM
RROOCCKKEERRAARRMMFFUULLCCRRUUMM
88mmmmFFUULLCCRRUUMMBBOOLLTT

19
Crankcase Assembly
• The VT 275 has four main bearings but
replaces the traditional individual main
bearing caps with a one-piece lower
crankcase assembly. The lower crankcase
is made of cast iron and is stronger than
the individual caps. The lower crankcase is
attached to the crankcase with sixteen
14mm main bearing bolts of two lengths
with the shorter bolts to the outside. Three
additional 8mm bolts are used on each
side at the perimeter. The lower crankcase
is sealed to the crankcase with two push-
in-place seals.
Crankcase and Oil Pan
• The upper oil pan bolts to the lower
crankcase and is sealed with a full
perimeter push-in-place gasket. The lower
sheet metal oil pan is sealed to the upper
cast aluminum oil pan with a full perimeter
push-in-place gasket. The upper oil pan is
wider than the crankcase and allows for
greater oil pan capacity without
increased depth.
• The oil pickup is sealed to the upper oil
pan with an O-ring and attached with two
6mm bolts. Oil pulled through the oil
pickup tube passes through a passage
cast in the upper oil pan to the lower
crankcase. The lower crankcase has a
machined passage that takes oil to a front
cover passage that leads to the oil pump.
Openings in the upper oil pan allow oil to
return to the pan during engine operation
but also serve to keep oil in the pan away
from the rotating crankshaft.
VT 275 DESIGN FEATURES
International®VT 275 V6 Engine
88mmmmBBOOLLTTSS
1144mmmmMMAAIINNBBEEAARRIINNGGBBOOLLTTSS
1144mmmmMMAAIINNBBEEAARRIINNGGBBOOLLTTSSLLOOWWEERRCCRRAANNKKCCAASSEE
LLOOWWEERRCCRRAANNKKCCAASSEE
LLOOWWEERROOIILLPPAANN
LLOOWWEERROOIILLPPAANN
OOIILLPPIICCKK--UUPPTTUUBBEE
OOIILLPPIICCKK--UUPPTTUUBBEEUUPPPPEERROOIILLPPAANN
UUPPPPEERROOIILLPPAANN
LLOOWWEERR
LLOOWWEERR
CCRRAANNKKCCAASSEE
CCRRAANNKKCCAASSEE
UUPPPPEERR
UUPPPPEERR
CCRRAANNKKCCAASSEE
CCRRAANNKKCCAASSEE
CCRRAANNKKSSHHAAFFTT
CCRRAANNKKSSHHAAFFTT

VT 275 DESIGN FEATURES
20
Rear Gear Train
• The VT 275 gear train is located at the rear
of the engine. The crankshaft gear is a
press fit on the crankshaft and drives the
camshaft gear directly. The crankshaft
flange with integral gear is pressed on the
end of the crankshaft then clamped with
six 12mm bolts. The camshaft gear must
be timed to the crankshaft gear during
assembly to maintain the correct relationship.
• The rear flange gear drives the primary
balance shaft gear at a one-to-one ratio.
The balance shaft runs through the hollow
camshaft to the front of the crankcase and
has the balance shaft counterweight
bolted to the front of the shaft. The flange
gear and balance shaft gear must be timed
to maintain the correct relationship
between the balance shaft counterweight
and the crankshaft.
• The high-pressure oil pump is located in
the Vee of the engine and is driven directly
off the camshaft gear. The oil pump gear
does not require timing.
•Note: The crankshaft gear that drives the
camshaft is located behind the flange gear.
Gear Timing
• The camshaft and balance shaft must be
timed to the crankshaft for proper engine
operation. During reassembly a timing pin
that aligns the camshaft gear and the
balance shaft gear is placed through the
gears and into a hole machined in the
crankcase, then the crankshaft is installed
while aligning the balance shaft and flange
gear dots. If only the balance shaft is out of
the engine, the shaft can be installed while
aligning the balance shaft gear and flange
gear dots.
International®VT 275 V6 Engine
HHIIGGHHPPRREESSSSUURREEOOIILL
HHIIGGHHPPRREESSSSUURREEOOIILL
PPUUMMPPGGEEAARR
PPUUMMPPGGEEAARR
CCAAMMSSHHAAFFTT
GGEEAARR
BBAALLAANNCCEERRSSHHAAFFTT
GGEEAARR
CCRRAANNKKSSHHAAFFTTFFLLAANNGGEE
AANNDDGGEEAARR
TTIIMMIINNGGPPIINNHHOOLLEE
CCAAMMSSHHAAFFTT
GGEEAARR
BBAALLAANNCCEERR
SSHHAAFFTTGGEEAARR
TTIIMMIINNGGGGEEAARR
DDOOTTSS
CCRRAANNKKSSHHAAFFTT
FFLLAANNGGEE&&GGEEAARR