Holset HX25, HX27W, HX25W, HE221W Service & Repair Manual
Holset HX25/25W/27W
Service Repair Manual
Copyright 2007, Cummins Turbo Technologies Ltd. All rights reserved.
VGT, Command Valve and Super MWE are trade marks of Cummins Turbo Technologies Ltd.
Holset and the Holset Logo are registered trade marks of Cummins Turbo Technologies Ltd.
Cummins and the Cummins logo are registered trade marks of Cummins Inc.
HX25/25W/27W Service Repair Manual Foreword
Foreword
This publication was written to assist with turbocharger installation, maintenance and overhaul. It is not a
warranty of any kind expressed or implied.
The specifications and procedures in this manual are based on information in effect at the time of publication.
Holset Service reserves the right to make any changes at any time without obligation. If differences are found
between your turbocharger and the information in this manual, contact your local Holset approved agent.
The latest technology and the highest quality standards are used in the manufacture of Holset Turbochargers.
When replacement parts are needed, we recommend using only genuine Holset parts.
HX25/25W/27W Service Repair Manual Table of Contents
Table of Contents
1: Introduction
About the Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1:1
How to Use the Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1:1
How to Order Holset Original Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1:1
Description and Operation of Turbocharger . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1:2
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1:2
Introduction to Turbocharger Matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1:2
Notes, Cautions and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1:3
Installation Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1:4
Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1:5
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1:6
2: Component Identification
Turbocharger Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2:1
Dataplate and CHRA (Core) of Turbocharger . . . . . . . . . . . . . . . . . . . . . . . . 2:1
Installation Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2:2
Exploded Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2:4
Component List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2:6
Purchasable Service Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2:8
3: Troubleshooting and Diagnosis
Fault Finding Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3:1
4: Component Testing and Replacement
Service Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:1
On Engine Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:2
Bearing Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:5
Turbine and Compressor Housings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:6
Cleaning of Housings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:9
Re-assembly of Housings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:11
Wastegate Actuator Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:14
Wastegate Actuator Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:15
Wastegate Mechanism Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:16
Wastegate Actuator Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:18
5: Turbocharger Service and Overhaul
Service Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5:1
Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5:2
Component Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5:6
Inspection and Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5:8
Reassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5:13
6: Service Data Sheets
HX Range Service Data Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6:1
HX25/25W/27W Service Repair Manual Introduction
1:1
About the Manual
The procedures in this manual were developed to instruct in the correct overhaul of the designated Holset
turbocharger range for optimum performance and minimum maintenance operation.
How to Use the Manual
The manual is split into sections designed to provide service information in a logical sequence. The manual
contains links to help the user navigate between relevant sections. Users who are unfamilier with navigating in
PDF documents are refered to Navigating in PDF documents in the Adobe® Acrobat® Reader™ help file.
Contents is an interactive page with links to all the sections. It can be accessed from any page
in the manual by clicking this icon.
Section 1 defines the layout of the manual, introduces the reader to the operation of the turbocharger
and presents important installation guidelines.
Sections 2, 3 and 4 concentrate on Turbocharger Component Identification, Troubleshooting and
Diagnosis, Component Testing and Replacement.
Section 5 identifies the Service and Overhaul procedures to be followed in the unlikley event of a
major turbocharger malfunction.
Section 6 quantifies build data to ensure the turbocharger will continue to operate to Holset Service
standard on completion of overhaul.
Manual sections 1 to 5 where applicable, appear as a self extracting compressed file which is organised
according to the steps needed to most easily and correctly maintain the operation of the turbocharger. Users
are required to download this file to hard disk. Section 6 has its own file identity and resides at
www.holset.co.uk. so that Holset can update the Service Data as changes occur. The links between manual
and service data are active only when the user is connected to the Internet.
Chapter 6 has an expiry date to encourage users to discard outdated saved or printed versions and always
access the latest information available at www.holset.co.uk.
When using the manual on-line this icon will link to Holset’s website to help find your nearest agent
for advice and how to order Holset original parts.
How to Order Holset Original Parts
To make sure of optimum performance, certain items must be discarded during disassembly and replaced with
new for re-assembly. These items are indicated in the Service and Overhaul section with the use of a
*
symbol.
All items showing a
*
are available in a basic overhaul kit.
To get the correct parts for your turbocharger, refer to the ‘component identification’ section of this manual to
help you find the following information:
1) Refer to the exploded view and component list to define the major components to be replaced.
2) Refer to the turbocharger’s dataplate which will be found on the compressor cover or wastegate
actuator to define the identifying information about your turbocharger build standard.
3) Contact your local Holset agent with componant identification nos. and dataplate assembly no., serial
no. and turbocharger type.
4) With this information, your local agent can provide you with the optimum kit of parts for re-assembling
your turbocharger for continued long life operation.
HX25/25W/27W Service Repair Manual Introduction
Description and Operation of Turbocharger
1:2
General Information
A turbocharger is a mechanical device which uses the engine’s exhaust gases to force more air into the engine
cylinders. Hot exhaust gas energy is used to turn a turbine wheel and shaft. At the other end of the shaft is the
compressor impeller (or compressor wheel), which draws in air and forces it into the engine cylinders.
Supplying increased air mass flow to the engine provides improved engine performance, lower exhaust smoke
density, improved operating economy and altitude compensation. The turbocharger has proven to be one of the
most beneficial devices for improving engine performance. It performs its job very well, as long as it is properly
cared for.
Introduction to Turbocharger Matching
The need for optimised matching over the engine speed range
A standard turbocharger can be perfectly matched to only one particular engine condition, eg maximum torque
speed or maximum load speed. At this engine speed, the turbocharger supplies the optimum mass of air to
give the required air/fuel ratio. At other speeds the air/fuel ratio cannot be held at the optimum hence fuel
consumption and emission levels worsen.
Engine emission legislations have forced manufacturers to improve their engine efficiencies, particularly at low
speeds where low air/fuel ratios cause high smoke levels.
The Holset turbocharger is carefully matched to meet the required engine characteristics during application
engineering. It is important that this match is maintained by using only Holset original turbine and compressor
parts.
The importance of correctly servicing the turbocharger
A turbocharger requires accurate assembly at point of manufacture. It is very important to adhere to setting
limits when servicing the turbocharger, as failure to do so could result in turbocharger or engine failure.
Effects of wrong match
Possible consequences if turbocharger boost pressure is too low:-
• Engine runs fuel rich • Fuel consumption increase
• Exhaust temperature increase • Smoke levels increase
• Hydrocarbon levels increase • Risks of failing emissions tests
• High cylinder temperature risks
damage to engine pistons
Possible consequences if turbocharger boost pressure is too high:-
• Engine runs fuel weak (lean) • Nitrous oxide levels increase
• Excessive boost overspeeds • Turbocharger bearing failure and
turbocharger wheel fatigue problems
• Increased cylinder pressure risks damage • Intercooler load increases causing engine
to engine head gasket, pistons and valves to overheat, risking piston damage
Note
Holset Service receives many turbocharger returns that are no fault found. Before assuming the turbocharger
is not performing to specification always refer to the engine diagnostic system and the troubleshooting
diagnostic procedures of this manual.
HX25/25W/27W Service Repair Manual Introduction
1:3
Notes, Cautions and Warnings
Notes, Cautions and Warnings are used in this manual to emphasise important or critical instructions.
Note
Information which is essential to highlight.
Caution
Maintanence or Service procedures which if not strictly followed, will result in damage or destruction of the
turbocharger.
Warning
Maintanence or Service procedures which if not correctly followed will result in personal injury or loss of life.
Warning
Turbocharger surface temperature during operation can achieve 700°C (1300°F). The designated
turbocharger range weighs up to 4.8 kg (10.6 lb) and is fitted with external parts that are sensitive to manual
handling.
Caution
This turbocharger requires a new standard of balancing process on rebuild using a proprietary vibration
sorting rig (VSR).
The turbocharger will not have any co-relation marks. If you intend to overhaul/repair the turbocharger, and
do not have access to a VSR machine, we recommend that you send the reassembled core in appropriate
packaging to protect the turbine and compressor blades to an approved Holset agent with VSR facilities.
As the results of vibration based tests are rig specific, the balance limits shown in Holset’s Service Data
Sheets are advisory only. Refer to repair agent to warrant durability, noise and vibration level of the specific
VSR balancing process used.
If you are in any doubt regarding the balancing process, please contact the local Holset agent for assistance.
Warning
Some parts are manufactured in Viton that requires special treatment in the case of repair and service after
fire.
Note
Holset turbochargers can be remanufactured using recovered parts. Where it is necessary to dispose of
components or whole turbochargers, an environmentally responsible process such as recycling should be
used, with due regard to local laws.
HX25/25W/27W Service Repair Manual Introduction
Installation Data
1:4
1. Holset Service receives many turbocharger returns that are no fault found. Before assuming the
turbocharger is not performing to specification always refer to the engine diagnostic system and the fault
finding chart of this manual to make all the recommended health checks.
2. It is important that intake and exhaust systems are fitted in accordance with the recommendations of
the Equipment and Engine manufacturers. Limiting mass inertia loading is critical to turbocharger whole
life operation. Maximum engine vibration input must not exceed 8.9g.
3. The air filter must remove particles greater than 5 µm at an efficiency of 95% and be of sufficient
capacity to match the air consumption of the engine. Recommended filters should always be used with
a pressure drop indicator. Intake systems must be capable of withstanding depressions up to 6.9 kPa
(1.0 lbf/in
2
).
4. Hose and clip connections of intake manifold systems must be capable of withstanding the
turbocharger pressure ratio. V band clamps are preferred and must be used above 3:1 pressure ratio.
5. Exhaust systems must be capable of operating at exhaust back pressures of up to 10 kPa (1.5 lbf/in
2
).
This limit is increased to 13.4 kPa (2.0 lbf/in2) if a catalytic converter is fitted. Exhaust brake
applications are permitted to impose 450 kPa (65.3 lbf/in2) back pressure.
6. Oil should be filtered to 10µm with efficiency of 60% TWA(Time Weighted Average) /20 µm with
efficiency of 85% TWA. Efficiency assessed using ISO Standard 4572/SAE J 1858.
7. The oil quality must be as specified by the engine manufacturer and will be a minimum API SE - CD
(MIL - L- 2104C) specification. Recommended oil change intervals are 5000 to 10,000 km (250 to 500
h) depending on duty. Improved life can be obtained by using super high performance diesel (SHPD)
oils, particularly in industrial applications which use extended oil drain periods.
8. Normal oil temperature is 95+/-5°C (203+/-9°F). It should not exceed 120°C (248°F) under any operating
condition.
9. Any pre-lube oil must be clean and meet the minimum CD classification.
10. The attitude of turbine housing, bearing housing and compressor cover is fixed. During installation, do
not attempt to rotate these components. Inclined turbocharger installation is not recommended. If an
installed angle is necessary, oil inlet centreline must be +/- 10 degrees from vertical and rotor centreline
+/- 5 degrees from horizontal.
11. Holset permits oil return pipes to decline at an overall angle of not less than 30 degrees below horizontal.
All turbocharger applications require a pipe of internal diameter greater than 14 mm which has integrated
connectors. To ensure oil returns into the engine under all operating conditions, the return connection into
the engine sump must not be submerged and the outlet flange of the turbocharger must be 50mm above
the maximum oil level of the engine sump pan. Crankcase pressure should be limited ideally to 0.8 kPa
(0.12 lbf/in
2
) but 1.4 kPa (0.20 lbf/in2) can be accepted by reference to Holset.
12. Oil pressure of 150 kPa (20 lbf/in
2
) must show at the oil inlet within 3 - 4 seconds of engine firing to
prevent damage to turbocharger bearing system. Aflexible supply pipe is recommended. Turbocharger
speed must not exceed 90,000 rev/min until 150 kPa (20 lbf/in2) is achieved.
13. The minimum oil pressure when the engine is on load must be 210 kPa (30 lbf/in
2
). Recommended full
load rated speed operating pressure is 350 kPa (50 lbf/in
2
) although 500 kPa (72 lbf/in2) is permitted
during cold start up. Under idling conditions pressure should not fall below 80 kPa (11.5 lbf/in2).
14. Recommended oil flows for the turbochargers are 0.4 litre/min at idle and 1.4 litre/min at maximum engine
speed.
15. Do not use liquid gasket substances or thread sealant as any excess can enter the turbocharger oil to
obstruct flow.
Note:
100 kPa = 1 bar (14.5037 lbf/in
2
= psi).
HX25/25W/27W Service Repair Manual Introduction
Installation Checklist
1:5
1. Always understand why the original turbocharger needs replacing before fitting another unit.
2. Check the turbocharger dataplate to ensure the Part No. is correct for the engine/application.
3. Check the engine exhaust, intake and aftercooler systems are clean and without obstruction i.e. free from
oil, gasket pieces, dust/dirt/carbon or foreign objects.
4. Replace the oil and air filters using replacement parts specified by the equipment manufacturer.
5. Change the engine oil using the type specified by the engine manufacturer.
6. Check that the turbocharger oil inlet and drain pipes and connectors are clean, free from obstruction and
will not leak under pressure.
7. Check that the coolant pipes of water cooled bearing housing applications and connectors are clean, free
from obstruction and will not leak under pressure.
8. To pre-lube the turbocharger bearings, pour some clean engine oil into the oil inlet and rotate the
turbocharger rotor assembly by hand.
9. Check that the exhaust manifold flange is flat and undamaged. Mount the turbocharger on the flange and
check that the turbine inlet gasket fits properly without obstructing the gas passages.
10. Assemble the air intake and boost outlet connections. Check that the connections are well made and will
not leak in use.
11. Check the exhaust system is fitted using the original mounting arrangement provided by the equipment
manufacturer. Always re-fit any supports/brackets back in position to ensure the system is correctly
supported.
12. Assemble the exhaust system to the turbine housing outlet. Check that the gasket/connection is well made
and will not leak in use.
13. Assemble any coolant pipes and check that the connections are well made, without obstruction and will
not leak in use.
14. Assemble the turbocharger oil inlet pipe and check that the connection is clean, well made and will not
leak in use.
15. Check all clamps and fasteners are correctly tightened to the torque recommended by the equipment
manufacturer.
16. Make any ECU checks recommended by the engine manufacturer.
17. Crank the engine WITHOUT firing until engine oil flows out of the turbocharger drain flange.
18. Assemble the oil drain pipe and check that the connection is well made, without obstruction and will not
leak in use.
19. Start the engine and run at idle speed for approximately 1 minute so that the oil supply system is fully
operational.
20. Accelerate the engine and check that there are no leaks/obstructions of air/oil/coolant/gas under pressure.
21. Check that no hose or connection deforms under normal operation.
22. Before switching off the engine, leave it running at idle speed for at least 1 minute to cool the turbine.
Symbole - Deutsch
In diesem Handbuch werden die folgenden Symbole verwendet, die wesentliche Funktionen hervorheben. Die
Symbole haben folgende Bedeutung:
WARNUNG - Unterhaltungs und Wartungsverfahren müssen genau befolgt werden, da ein
Nichtbeachten zu Personenschäden oder tödlichen Verletzungen führt.
ACHTUNG - Falls Unterhaltungs und Wartungsverfahren nicht genau beachtet werden, kann der
Turbolader dadurch beschädigt oder zerstört werden.
AUSBAU bzw. ZERLEGEN.
EINBAU bzw. ZUSAMMENBAU.
INSRPEKTION erforderlich.
Teil oder Baugruppe REINIGEN.
DIMENSION - oder ZEITMESSUNG.
Teil oder Baugruppe ÖLEN.
WERKZEUGGRÖSSE wird angegeben.
ANZUG auf vorgeschriebenes Drehmoment erforderlich.
Sicherstellen, daß die AUSWUCHTMARKEN an der Rotor-Baugruppe richtig ausgerichtet sind.
Elektrische MESSUNG DURCHFÜRHREN.
Weitere Informationen an anderer Stelle bzw. in anderen Handbüchern.
Schutzkleidung muß immer getragen werden.
Deutet an, daß Teile schwer sein können.
Website-Verzeichnis mit Ihrem nächsten Holset-Händler.
Gehe zu Inhalt
HX25/25W/27W Service Repair Manual Introduction
Symbols
1:6
KG
Symbols - English
The following group of symbols have been used in this manual to help communicate the intent of the
instructions. When one of the symbols appears, it conveys the meaning defined below.
WARNING - Serious personal injury or extensive property damage can result if the warning
instructions are not followed.
CAUTION - Minor personal injury can result or a part, an assembly or the engine can be damaged if
the caution instructions are not followed.
Indicates a REMOVAL or DISASSEMBLY step.
Indicates an INSTALLATION or ASSEMBLY step.
INSPECTION is required.
CLEAN the part or assembly.
PERFORM a mechanical or time MEASUREMENT.
LUBRICATE the part or assembly.
Indicates that a WRENCH or TOOL SIZE will be given.
TIGHTEN to a specific torque.
Ensure that the BALANCE MARKS on the rotor assembly are in alignment
PERFORM an electrical MEASUREMENT.
Refer to another location in this manual or another publication for additional information.
Please wear protective clothing at all times.
Indicates components may be heavy.
Website access to find your nearest Holset Agent.
Go to contents
HX25/25W/27W Service Repair Manual Introduction
1:7
KG
Simbolos - Español
Los simbolos siguientes son usados en estes manual para clarificar el proceso de las instrucciones. Cuado
aparece uno de estos simbolos, su significado se espcifica en la parte inferior.
ADVERTENCIA – Procedimientos de Mantenimiento o Servicio que al no seguirse resultarán en
daños personales o pérdida de vida.
ATENCION – Procedimientos de Mantenimiento o Servicio que al no seguirse al pie de la letra,
resultarán en el daño o la destrucción del turbosobrealimentador.
Indica un paso de REMOCION o DESMONTAJE.
Indica un paso de INSTALACION o MONTAJE.
Se requiere INSPECCION.
LIMPIESE la pieza o el montaje.
Ejecutese una MEDICION mec·nica o del tiempo.
LUBRIQUESE la pieza o el montaje.
Indica que se dar· una LLAVE DE TUERCAS o el TAMA—O DE HERRAMIENTA.
APRIETESE hasta un par torsor especifico.
Ceriórese de que est·n alineadas las marcas de balance en el rotor.
EJECUTESE una MEDICION eléctrica.
Para información adicional refiérase a otro emplazamiento de este manual o a otra publicación
anterior.
Favor de siempre llevar ropa protectora.
Indica que los componentes pueden ser pesados.
Acceso a Sitio Web para localizar su agente Holset más cercano.
Ir a la tabla de materias
HX25/25W/27W Service Repair Manual Introduction
1:8
KG
Symboles - Français
Les symboles suivants sont utilisés dans ce manuel pour aider à communiquer le but des instructions. Quand
l’un de ces symboles apparait, il évoque le sens défini ci-dessous:
ATTENTION DANGER - Procédures de maintenance ou d’entretien qui, si elles ne pas observées
correctement, auront pour résultat des lésions corporelles ou un décès.
MISE EN GARDE - Procédures de maintenance ou d’entretien qui, si elles ne sont pas observées
strictement, auront pour résultat de causer des dégâts au turbocompresseur ou de conduire à sa
destruction.
Indique une opération de DEPOSE.
Indique une opération de MONTAGE.
L’INSPECTION est nécessaire.
NETTOYER la pièce ou l’ensemble.
EFFECTUER une MESURE mécanique ou de temps.
GRAISSER la pièce ou l’ensemble.
Indique qu’une DIMENSION DE CLE ou D’OUTIL sera donnée.
SERRER à un couple spécifique.
S’assurer que les repères d’équilibrage sur l’ensemble de rotor sont alignés.
EFFECTUER une MEASURE électrique.
Se reporter à un autre endroit dans ce manuel ou à une autre publication pour obtenir des
information plus complètes.
Il faut toujours mettre vêtements de protection.
Indique que les composants peuvent être lourds.
Accès au site Web pour trouver l’agent Holset le plus proche.
Aller au sommaire
HX25/25W/27W Service Repair Manual Introduction
1:9
KG
HX25/25W/27W Service Repair Manual Introduction
1:10
Símbolos - Português
Os símbolos a seguir serão utilizados neste manual para facilitar a comunicação das instruções e seue
significados estão déscritos abaixo.
ATENÇÃO - Os procedimentos de Manutenção ou Serviços que não forem seguidos correctamente
resultarão em ferimentos pessoais ou riscos de vida.
AVISO - Os procedimentos de Manutenção ou Serviço que não forem rigorosamente seguidos
resultarão em danos ou destruição do carregador turbo.
Indica um passe de DESMONTAGEM.
Indica um passo de MONTAGEM.
Requer inspeção.
LIMPE a peça ou conjunto.
Requer Medição mecãnica ou de tempo.
LUBRIFIQUE a peça ou o conjunto.
Indica necessidade de APERTO.
TORQUEAR de acordo com o especificado.
Assegure-se de que as MARCAS DE BALANCEAMENTO do conjunto eixorotor estejam alinhadas.
Requer medição ELÉTRICA.
Procure em outra seção deste manual ou em publicação par obter informações adicionais
Por favor, sempre utilize EPI (Equipamento de Protecao Individual)
Indica que os componentes podem estar pesados.
Visite o Website para encontrar o seu Agente Holset mais perto.
Vá para Conteúdo
KG
Turbocharger Identification
HX25/25W/27W Service Repair Manual Component Identification
2:1
Dataplate
Center Housing Rotating Assembly (CHRA) (2)
35XXXXX
XYYMMXXXXX
HX27W
Note
Dataplates will be fitted to the compressor housing (8).
The information from the dataplate must be quoted for
service and parts support.
HX25/25W/27W Service Repair Manual Component Identification
2:2
Installation Options
T ype A HX27W
Type B HX25
Type C HX25W
HX25/25W/27W Service Repair Manual Component Identification
2:3
Installation Options
Type D - HX25W
Type E - HX25
Type F - HX25W
HX25/25W/27W Service Repair Manual Component Identification
Exploded View - HX27W Type A
2:4
74
106
60
73
76
75
75
77
96
81
28
43
113
114
4
7
61
66
33
38
60
12
11
64
11
91
53
41
36
6
13
31
16
32
62
5
8
Note
Exploded views represent a generic build standard. Parts may be added or subtracted in specific applications.
HX25/25W/27W Service Repair Manual Component Identification
2:5
Exploded View - HX25 Type B
113
114
4
7
61
66
16
38
60
12
11
64
11
91
41
36
53
6
13
5
8
31
33
32
43
28
62
96
Note
Exploded views represent a generic build standard. Parts may be added or subtracted in specific applications.
HX25/25W/27W Service Repair Manual Component Identification
Component List - HX25/25W/27W
2:6
Item No. Description Quantity
All Applications
1 Repair Kit CHRA (Core)* 1
2 CHRA (Core) 1
4 Bearing Housing 1
5 Turbine Housing 1
6 Assembly, Turbine Wheel 1
7 Compressor Wheel 1
8 Compressor Housing 1
11 Journal Bearing* 2
12 Thrust Bearing* 1
13 Split Ring Seal, Turbine* 1
16 Split Ring Seal, Compressor* 1
28 V-Band Clamp, Turbine 1
31 Oil Slinger 1
32 O-Ring Seal, Bearing Housing* 1
33 Oil Baffle 1
36 Thrust Collar 1
38 Heat Sheild 1
41 O-Ring Seal, Compressor Housing* 1
43 Oil Seal Plate 1
53 Gasket, Oil Outlet 1
60 Plain Washer 1
61 Locknut, Compressor Wheel 1
62 Locknut, V-Band 1
64 Retaining Ring, Bearing* 2
66 Retaining Ring, Insert 1
91 Retaining Ring, Compressor Housing 1
96 Screw, V-band 1
113 Adaptor, Oil Inlet 1
114 O-Ring Seal, Oil Inlet 1
HX25/25W/27W Service Repair Manual Component Identification
Component List - HX25/25W/27W
2:7
Item No. Description Quantity
Wastegate Applications
74 Wastegate Kit comprising: 1
73 Actuator 1
75 Hose Clip 2
76 End Link, Assembly 1
77 Retaining Ring, End Link 1
106 Screw, Actuator 2
60 Plain Washer 2
128 Jam Nut 0/1
143 Breakoff Nut 0/1
81 Hose 1
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