CNH CX16B User manual

CNH Copyright 2004 CNH France S.A.
Printed in France
January 2004
Cre 9-88670
SERVICE MANUAL
Mini Excavators
CX16B and CX18B

00104 9-88670 GB
INTRODUCTION

00104 9-88670 GB
INTRODUCTION
TO THE READER
•This manual has been written for a skilled
technician, in order to give him the information
necessary to repair this machine.
-Read this manual carefully for correct
information about repair procedures.
-For any question or comment, or in case you
noticeamistakeinthismanualcontent,please
contact:
CNH FRANCE S.A.
18, place des Nymphéas ZI Paris Nord II
93420 Villepinte France
ADDITIONALREFERENCEMANUALS
•In addition to this Workshop Manual, refer also to
the following:
-Operation and maintenance instruction
manual
-Spare parts catalog
DESCRIPTION OF THE COMPLETE
WORKSHOP MANUAL
•The complete repair manual consists of two
volumes:
CX16B and CX18B
Workshop Manual "Excavator"
•"Excavator" and "Engine" Workshop Manuals
contain the technical information necessary for
machine/engine service and repair, service
equipment, information on maintenance standards,
remove and install procedures, disassembly and
assembly procedures.
•The complete Workshop Manual for the excavator
models CX16BandCX18B consists of the following
volumes identified by print number as shown
herebelow:
VOLUME
- Workshop Manual - "Excavator"
MACHINE TYPE
CX16B
CX18B
PRINT NO.
9-88670

00104 9-88670 GB
INTRODUCTION
AVOID ACCIDENTS
Most accidents, whether they occur in industry, on the farm, at home or on
the highway, are caused by the failure of some individuals to follow simple
and fundamental safety rules or precautions. For this reason MOST
ACCIDENTS CAN BE PREVENTED by recognising the real cause and
doing something about it before the accident occurs.
Regardless of the care used in the design and construction of any type of
equipment there are conditions that cannot be completely safeguarded
against without interfering with reasonable accessibility and efficient
operation.
Carefully read indications, cautions and safety warning quoted in the
“SAFETY RULES” section.
A careful operator is the best insurance against an accident.
The complete observance of one simple rule would prevent many thousand
serious injuries each year.
That rule is:
Never attempt to clean, oil or adjust a machine while it is in motion.
ATTENTION
On machines having hydraulically, mechanically and/or cable
controlled equipment (such as showels, loaders, dozers, scrapers
etc.)becertaintheequipmentisloweredtothegroundbeforeservicing,
adjusting and/or repairing.
If it is necessary to have the equipment partially or fully raised to gain
access to certain items, be sure the equipment is suitably supported
bymeansotherthanthehydraulicliftcylinders,cableand/ormechanical
device used for controlling the equipment.
COPYRIGHT BY CNH FRANCE S.A.
Rue des Meuniers - 60330 LE PLESSIS-BELLEVILLE FRANCE
All rights reserved. Reproduction of text and illustrations in whole or in part, is
strictly prohibited.

CX16B and CX18B
00104 9-88670 GB
SECTION 1 HOW TO USE
INDEX
Sections index ...................................................................................................................1-1
Introduction .......................................................................................................................1-4
Manual handling ............................................................................................................................................ 1-4
Symbols and indications ............................................................................................................................... 1-5
Features of the manual .....................................................................................................1-6
Manual composition ...................................................................................................................................... 1-6
Brief information for manual consultation ...................................................................................................... 1-8

00104 9-88670 GB

1-1
SECTIONS INDEX
00104 9-88670 GB
SECTION 1 - HOW TO USE
Sections index ............................................................................................................................................... 1-1
Introduction ................................................................................................................................................... 1-4
Features of the manual ................................................................................................................................. 1-5
SECTION 2 - SAFETY RULES
Safety rules .................................................................................................................................................... S1
Safety signs.................................................................................................................................................. S38
SECTION 3 - PRELIMINARY
General precautions for repairs..................................................................................................................... 3-1
Escaping procedure in case of emergency ................................................................................................... 3-6
International unit conversion system ............................................................................................................. 3-7
SECTION 4 - SPECIFICATION
Foreword ....................................................................................................................................................... 4-1
Identification data .......................................................................................................................................... 4-2
Noise levels (2000/14/EC) ............................................................................................................................ 4-3
Summary plate for maintenance operations ................................................................................................. 4-4
Basic components of the mini excavator....................................................................................................... 4-5
Technical specifications ................................................................................................................................ 4-7
Digging performances (canopy) .................................................................................................................... 4-8
Digging performances (cab) .......................................................................................................................... 4-9
Transport dimensions (canopy)................................................................................................................... 4-10
Transport dimensions (cab) ........................................................................................................................ 4-11
Lifting capacities (cab) ................................................................................................................................ 4-12
Lifting capacities (canopy)........................................................................................................................... 4-13
Machine and components weight (dry) ....................................................................................................... 4-14
Buckets application ..................................................................................................................................... 4-15
Filling chart .................................................................................................................................................. 4-16
SECTION 5 - TOOLS
Tools of cylinders .......................................................................................................................................... 5-1
Tool of hydraulic pump .................................................................................................................................. 5-4
Tool of pilot valve track ................................................................................................................................. 5-4
Tool of roller track ......................................................................................................................................... 5-4
Tool of idler adjuster ...................................................................................................................................... 5-5
Tools of engine.............................................................................................................................................. 5-5
Tools of travel motor ..................................................................................................................................... 5-8
SECTION 6 - STANDARD MAINTENANCE TIME TABLE
Preface .......................................................................................................................................................... 6-1
Standard working time table for the maintenance ......................................................................................... 6-2
SECTION 7 - MAINTENANCE STANDARDS AND TEST PROCEDURES
How to use maintenance standards and precuations ................................................................................... 7-1
Performance inspection standard table......................................................................................................... 7-2
Measuring engine speed ............................................................................................................................... 7-4
Measuring hydraulic oil pressure .................................................................................................................. 7-5
Measuring travel performances..................................................................................................................... 7-8
Measuring slew performances .................................................................................................................... 7-10
Measuring attachment operating performances.......................................................................................... 7-12
Measuring slew bearing performances ....................................................................................................... 7-14
Measuring crawler tension .......................................................................................................................... 7-15
SECTIONS INDEX PAGES

1-2
SECTIONS INDEX
00104 9-88670 GB
SECTION 8 - HYDRAULIC SYSTEM
Function and features of hydraulic circuit...................................................................................................... 8-1
Hydraulic circuits and components ............................................................................................................... 8-2
Hydraulic circuit operation ............................................................................................................................. 8-6
SECTION 9 - ELECTRICAL SYSTEM
How to read circuit diagram .......................................................................................................................... 9-1
SECTION 10 - ATTACHMENT
Attachment assy and name......................................................................................................................... 10-1
Bucket ......................................................................................................................................................... 10-2
Arm .............................................................................................................................................................. 10-5
Boom ......................................................................................................................................................... 10-10
Swing ........................................................................................................................................................ 10-15
Dozer......................................................................................................................................................... 10-22
Hydraulic cylinders .................................................................................................................................... 10-26
SECTION 11 - UPPER STRUCTURE
Canopy ........................................................................................................................................................ 11-1
Cab .............................................................................................................................................................. 11-4
Guard .......................................................................................................................................................... 11-6
Floor plate ................................................................................................................................................. 11-10
Battery ....................................................................................................................................................... 11-13
Counterweight ........................................................................................................................................... 11-14
Fuel tank ................................................................................................................................................... 11-17
Hydraulic oil tank ....................................................................................................................................... 11-20
Air cleaner ................................................................................................................................................. 11-25
Muffler ....................................................................................................................................................... 11-27
Hydraulic pump ......................................................................................................................................... 11-28
Radiator..................................................................................................................................................... 11-43
Engine ....................................................................................................................................................... 11-47
Control valve ............................................................................................................................................. 11-49
Solenoid valve ........................................................................................................................................... 11-84
Pilot valve .................................................................................................................................................. 11-86
Pilot valve travel ........................................................................................................................................ 11-96
Slew motor .............................................................................................................................................. 11-105
Joint swivel .............................................................................................................................................. 11-139
Selector valve.......................................................................................................................................... 11-154
Upper frame ............................................................................................................................................ 11-159
SECTION 12 - TRAVEL SYSTEM
Low structure............................................................................................................................................... 12-1
Crawler ........................................................................................................................................................ 12-3
Slide plate ................................................................................................................................................. 12-12
Roller tracks .............................................................................................................................................. 12-14
Idler adjuster ............................................................................................................................................. 12-19
Sprocket .................................................................................................................................................... 12-28
Travel motor .............................................................................................................................................. 12-29
Slew bearing ............................................................................................................................................. 12-71
Lower frame .............................................................................................................................................. 12-76
SECTION 13 - TROUBLESHOOTING HYDRAULIC SYSTEM
General precautions .................................................................................................................................... 13-1
Trouble diagnosis: Hydraulic ....................................................................................................................... 13-2
Troubleshooting .......................................................................................................................................... 13-3
SECTION 14 - TROUBLESHOOTING ELECTRICAL SYSTEM
Trouble diagnosis: Electrical ....................................................................................................................... 14-1
Troubleshooting .......................................................................................................................................... 14-2

1-3
SECTIONS INDEX
00104 9-88670 GB
SECTION 15 - TROUBLESHOOTING ENGINE
Trouble diagnosis: Engine........................................................................................................................... 15-1
Troubleshooting .......................................................................................................................................... 15-2
SECTION 16 - ENGINE
Specifications and Performance ............................................................................................................... 16-1
Cross Sectional Views .............................................................................................................................. 16-15
Cooling water, lubricating oil and fuel oil .................................................................................................. 16-17
Troubleshooting ........................................................................................................................................ 16-21
Measuring instruments .............................................................................................................................. 16-25
Measurement, inspection and adjustment ................................................................................................ 16-29
Adjustment the valve head clearance ....................................................................................................... 16-31
Checking the v-belt tension ....................................................................................................................... 16-32
Measuring and checking the injection pressure and spray patterns of the fuel injection valve ................. 16-32
Checking and adjustament the fuel injection timing .................................................................................. 16-36
Adjustament the no-load maximum (or minimum) revolutions .................................................................. 16-38
Checking the cooling water system and radiator for water leakage .......................................................... 16-38
Checking the battery ................................................................................................................................. 16-39
Checking the sensors................................................................................................................................ 16-41
Checking the oil cooler .............................................................................................................................. 16-42
Checking the piston cooling nozzle ........................................................................................................... 16-43
Measuring Procedure, Service Data and Corrective Action ...................................................................... 16-45
Disassembly and reassembly ................................................................................................................... 16-73
Service data .............................................................................................................................................. 16-83
Tightening torque ...................................................................................................................................... 16-89
Fuel injection pump for indirect injection system....................................................................................... 16-91
Fuel Injection Pump for Direct Injection System ....................................................................................... 16-97
Governor ................................................................................................................................................. 16-111
Turbocharger........................................................................................................................................... 16-123
Service information for CARB ULG regulation ........................................................................................ 16-129