Hitachi 6HK1 Manual de instrucciones
EWDDN50-EN-016HK1 TIER 4 COMPATIBLE ENGINE MANUAL WORKSHOP MANUAL
PRINTED IN JAPAN (K) 2016, 02
Service Manual consists of the following sections.
Technical Manual (Operational Principle)
Technical Manual (Troubleshooting)
Workshop Manual
Engine Manual
EWDDN50-EN-01
PART NO.
Tier 4 Compatible
Engine Manual
Workshop Manual
URL:http://www.hitachi-c-m.com
6HK1
FOREWORD
Thismanualdescribestheserviceproceduresforthe6HK1dieselengine(Tier4/Stage4compatible).
Thecontentsofthismanualarecurrentatthedateofissue,butmaydifferslightlyfromyourengineduetospecificationchanges
orothermodificationsmadethereafter.
Thismanualconsistsofthefollowingsub-sections.
PublicationNo. PublicationName Sub-sections
IDE-2710 ENGINE 0 Introduction
14A ServiceInformationGuide
15B MaintenanceInformation
15C FunctionalInspection
15D Symptom
15E DTCInformation
1A EngineControl
1B Mechanical
1C FuelSystem
1D Cooling
1E Lubrication
1F Induction
1G Exhaust
1H Aux.EmissionControlDevices
1J Electrical
38B MaintenanceInformation(UreaSCRSystem)
38C FunctionalInspection(UreaSCRSystem)
38D Symptom(UreaSCRSystem)
38E DTCInformation(UreaSCRSystem)
10M EmissionControl(UreaSCRSystem)
–WiringDiagram
IDE-2710前書44051762014.7.10 9:21AM ページ1
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Introduction
safety information
1. Repair work safety information
1. Use an engine stand when demounting the engine
from the equipment.
Be sure not to place the engine directly on the
ground or allow the oil pan to come into contact with
the ground.
2. When performing a procedure with two or more
people, make sure to ensure each other's safety.
3. Do not disconnect the battery cable for 3 minutes
after turning OFF the ignition switch.
4. When repairing the electrical system, make sure to
disconnect the cable from the negative (-) battery
terminal before working. Keep fire away when
removing the battery cover.
5. Do not leave the engine running for an extended
period of time or perform painting in a poorly
ventilated working environment.
6. Make sure to use only the special tools if the
procedure requires them for the work. Performing
the procedure using other tools may cause damage to
parts or personal injury.
7. Inspect the tools, instruments, and special tools
regularly, and prepare them before working. Do not
use tools such as a wrench that has lost its edges, a
hammer with frayed edges, or a chipped chisel.
8. When performing work using a device such as a
grinder, crane or welder, make sure to pay sufficient
attention to the handling precautions.
Wear work clothes and safety equipments in the
other operations as well.
9. Be sure to check that there is no fuel leaks when
performing maintenance on fuel systems.
10. When handling volatile materials, be extremely
careful to not let them catch fire.
Also make sure to wipe away any oil that sticks to
rubber parts, as it can cause deterioration.
2. Replacement parts and parts number safety
information
1. Whenever disassembly is performed, make sure to
replace the packing, oil seals, O-rings, crimping lock
nuts, bending lock plate, and split pins, etc., with
new ones.
2. Since the part numbers indicated in this manual may
differ from the supply system and are subject to
change, make sure to check the supply system and
part numbers in the parts catalog.
0-2 Introduction (All models)
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Description General Information
Service Information Guide
(All models)
Table of Contents
Contents included in service information.....................14A-2
Plastic gauge..................................................................14A-4
Recommended liquid gasket.........................................14A-6
Thread locking adhesive agent......................................14A-8
Term..............................................................................14A-9
Abbreviations .............................................................14A-10
Standard bolts..............................................................14A-14
Service Information Guide (All models) 14A-1
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Contents included in service information
1. Contents included in service information
Removal
Includes the removal procedure for repairing parts and
devices, etc.
Installation
Includes the installation procedure for repairing parts and
devices, etc.
Disassembly
Includes the disassembly procedure for performing an
overhaul of a unit or assembly part, etc.
Assembly
Includes the assembly procedure for performing an
overhaul of a unit or assembly part, etc.
Inspection
Includes the inspection items for the parts that
particularly require inspection to ensure continued
performance of parts and devices.
The standard values, set values, and limits for use of parts
are included if they have these specifications set.
Cleaning
Includes the cleaning procedure for parts and devices, etc.
Preparation
Includes the preparatory procedure necessary before
removing parts and devices, etc.
Adjustment
Includes the adjustment procedure when parts have to be
adjusted to set values or standard values when performing
assembly or installation.
Measurement
Includes the measurement procedure to judge if parts are
installed correctly, etc.
Drain
Includes the draining procedure of oil, etc.
Refill
Includes the refilling procedure of oil, etc.
Air removal
Includes the air removal procedure when air removal is
necessary after replacing oil, etc.
Writing
Includes the writing procedure necessary after replacing
the ECM or supply pump.
Precaution
Includes the maintenance precautions specific to each
item.
Disconnection
Includes the disconnection procedures of wiring, piping,
etc.
Connection
Includes the connection procedures for wiring, piping,
etc.
Setting
Includes the setting procedure necessary after replacing
the ECM, etc.
Replacement
Includes the replacement procedure for parts and oils, etc.
Prioritized DTC
Includes DTCs that need to be diagnosed and resolved
before the relevant DTC when multiple DTCs are
detected.
Diagnosis
Includes the diagnosis procedure for troubleshooting
symptoms.
DTCs are listed in the descending order of priority.
Confirmation of problem resolution
Includes procedures to clear the DTC and any necessary
confirmation steps using numeric values, etc.
Functional description
Includes detailed functional description related to
functional inspection.
Symptom description
Includes detailed symptom descriptions related to
diagnosis by symptom.
DTC description
Includes circuit description related to DTCs.
Setting conditions
Includes the preconditions and judgment conditions
required for the ECU to detect a DTC.
Action upon setting
Includes information related to control actions taken by
the ECU when DTCs are set.
Items related to ETM
Items related to the ETM are included in "Using the
Wiring Diagram".
2. Arrows and symbols
14A-2 Service Information Guide (All models)
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1. Vehicle front
2. Upper
3. Operating section or operating direction
4. Detail on a section
5. Detailed view from the direction of A
6. Arrow indicates measurement
7. Arrow indicates cross-section
8. Outside air or cold air
9. Gas or warm air
10. Mixing of outside air and gas, or cold air and
warm air
11. Rotation direction
12. Oil feeding
13. Lubrication
14. Application area of liquid gasket
Service Information Guide (All models) 14A-3
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Plastic gauge
1. Using the plasti-gauge
Type Measurable range
PG-1 (Green) ： 0.025 to 0.076 mm { 0.00098
to 0.00299 in }
PR-1 (Red) ： 0.051 to 0.152 mm { 0.00201
to 0.00598 in }
PB-1 (Blue) ： 0.102 to 0.229 mm { 0.00402
to 0.00902 in }
Method for measuring the gap between the connecting
rod bearing and crank pin
Clean the connecting rod and bearing, and assemble them
on the connecting rod. Cut the plasti-gauge to the width
of the crank pin and lay it parallel avoiding the crank pin
oil hole. Align the markings on the connecting rod and on
the cap to assemble it on the crank pin. Apply
molybdenum disulfide to the threaded portion and seat
surface of the tightening bolts. Alternately tighten them
so that the cap is at the specified torque.
Caution：
・Never move the connecting rod when the
plasti-gauge is in use.
Gently remove the cap and connecting rod and use a scale
printed on the packaging of the plasti-gauge to measure
the flattened plasti-gauge.
Method for measuring the gap between the crank bearing
and crank journal
Clean the installation surfaces of the cylinder block and
crankcase bearing, and assemble them on the cylinder
block and crankcase. Gently place the crankshaft on the
cylinder block, and lock it into place by turning it
approximately 30 degrees. Cut the plasti-gauge to the
width of the crank journal and lay it parallel avoiding the
journal oil hole. Gently place the crankcase on the
cylinder block, and apply molybdenum disulfide to the
threaded portion and seat surface of the tightening bolts.
Tighten in the specified order at the specified torques.
Caution：
・Never move the connecting rod when the
plasti-gauge is in use.
Gently remove the crankcase and use a scale printed on
the packaging of the plasti-gauge to measure the flattened
plastic gauge.
14A-4 Service Information Guide (All models)
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