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Section 1 - General Information

General Procedures

Removing and Replacing Components

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1-18

9813/3750-01

Removing and Replacing Components

Preparation

Before  removing  and  replacing  components  do  the 
following:

– To  prevent  contamination  of  the  machine  systems, 

clean  the  machines  in  the  area  of  the  applicable 
components. Refer to

 Section 2, Preservation and 

Storage, Cleaning the Machine

.

– Make sure that the correct maintenance procedures 

are available.

– Make sure that the correct tools and equipment are 

available.

– Make  sure  that  the  correct  replacement  parts, 

consumables, fluids and lubricants are available.

Original Components

Always Install new oil seals, gaskets, etc. 

Components  showing  obvious  signs  of  wear  or  damage 
should be replaced with new ones. 

Before re-installing original components do the following:

– Clean  components  using  the  applicable  cleaning 

materials.

– Inspect  components  for  signs  of  excessive  wear  or 

defects.

– Check  the  component  specifications  such  as  wear 

limits where applicable.

New Components

Make sure that the correct new components are installed. 
Do  not  substitute  components  from  another  machine. 
Components  may  look  the  same  but  may  not  be 
interchangeable. Refer to the JCB parts systems.

Torques and Fixings

When replacing components always tighten the applicable 
fixings to the correct torque. For the torque setting to be 
effective do the following before installing the fixings:

– Make  sure  that  all  the  applicable  component 

assemblies are correct.

– Make  sure  that  the  applicable  fixings  are  to  the 

correct specification. If necessary discard the original 
fixings and replace them with new ones. The relevant 
procedures indicate when this is necessary.

– Make  sure  that  the  applicable  fixings  and  threaded 

holes are free from contamination. This includes; dirt, 
debris,  old  sealants  and  compounds,  fluids  and 
lubricants.

This  manual  provides  reference  to  the  correct  torque 
settings as follows:

– Where  no  torque  setting  is  given  in  the  applicable 

procedure, use the standard torque setting. To obtain 
the  correct  standard  torque  setting  refer  to 

Torque 

Settings

 in this section.

– Where  torque  settings  are  given  in  the  applicable 

procedure use the settings given. These settings may 
be different to the standard torque settings in the case 
of special fixings for example.

Summary of Contents for JS Series

Page 1: ...CE World Class Customer Support 9813 3750 01 Publication No Issued by JCB Technical Publications JCB Aftermarket Training Woodseat Rocester Staffordshire ST14 5BW England Tel 44 1889 591300 Fax 44 188...

Page 2: ...Customer Support 9813 3750 01 Publication No Issued by JCB Technical Publications JCB Aftermarket Training Woodseat Rocester Staffordshire ST14 5BW England Tel 44 1889 591300 Fax 44 1889 591400 Sectio...

Page 3: ...Section 1 General Information 1 0 1 0 9813 3750 01 Notes...

Page 4: ...ses 1 16 Battery Disconnection Connection 1 17 Removing and Replacing Components 1 18 Preparation 1 18 Original Components 1 18 New Components 1 18 Torques and Fixings 1 18 Battery Charging System Pre...

Page 5: ...k 1 36 Electrics 1 40 Hydraulics 1 41 Special Tool for removal of the Brake Piston 1 46 Hydraulics 1 47 Hydraulic Rams Dismantling and Assembly 1 47 Boom Cylinder parts break down 1 48 Arm Cylinder pa...

Page 6: ...Information 1 1 1 1 9813 3750 01 Introduction Identifying Your Machine For information about identifying your machine and its main components refer to Section 2 About the Machine Machine and Componen...

Page 7: ...Section 1 General Information Introduction Identifying Your Machine 1 2 1 2 9813 3750 01 Page left intentionally blank...

Page 8: ...Notice For an explanation of the safety notice signal words refer to Section 2 Introduction Safety For general safety notices refer to Section 2 Introduction Safety For maintenance safety notices refe...

Page 9: ...Section 1 General Information Safety Introduction 1 4 1 4 9813 3750 01 Page left intentionally blank...

Page 10: ...Use Introduction This topic contains information about the structure of the manual and how to use the manual Scope 1 6 Personnel 1 6 Applications 1 6 Newest Data 1 6 Format 1 7 Left Side Right Side 1...

Page 11: ...rocedures and general techniques associated with the maintenance and repair of hydraulic earthmoving equipment Finally please remember above all else SAFETY MUST COME FIRST Applications This manual co...

Page 12: ...e components and controls Refer also to the safety and daily weekly maintenance information The remaining sections are alphabetically coded and deal with dismantling overhaul etc of specific component...

Page 13: ...General Information Use Left Side Right Side 1 8 1 8 9813 3750 01 Left Side Right Side In this manual left A and right B mean your left and right when you are seated correctly in the machine T017280...

Page 14: ...of a service Depending on application this may be anything between neutral circuit pressure and LSRV operating pressure Pink Pressure Pressure that is above neutral circuit pressure but lower than tha...

Page 15: ...Section 1 General Information Use Hydraulic Schematic Codes 1 10 1 10 9813 3750 01 Page left intentionally blank...

Page 16: ...ntenance tasks listed on the maintenance schedules Refer to Section 2 Maintenance Schedules The procedures for the daily and weekly 10 and 50 hour tasks are given in Section 2 Maintenance The procedur...

Page 17: ...Section 1 General Information Routine Maintenance Maintenance Schedules 1 12 1 12 9813 3750 01 Page left intentionally blank...

Page 18: ...rocedures are parking the machine and making it safe and venting hydraulic pressure These procedures are given here as an alternative to again and again in the manual Where applicable you will see a c...

Page 19: ...neral Procedures Parking the Machine and Making it Safe 1 14 1 14 9813 3750 01 Parking the Machine and Making it Safe For the correct procedures to park and make the machine safe refer to Section 2 Ma...

Page 20: ...essure Hydraulic fluid at system pressure can injure you Before disconnecting or connecting hydraulic hoses or couplings vent the pressure trapped in the hoses in accordance with the instructions give...

Page 21: ...c Pressure Hydraulic fluid at system pressure can injure you Before disconnecting or connecting hydraulic hoses or couplings vent the pressure trapped in the hoses in accordance with the instructions...

Page 22: ...n General Procedures Battery Disconnection Connection 1 17 1 17 9813 3750 01 Battery Disconnection Connection For the correct procedures to disconnect connect the battery refer to Section 2 Maintenanc...

Page 23: ...new components are installed Do not substitute components from another machine Components may look the same but may not be interchangeable Refer to the JCB parts systems Torques and Fixings When repl...

Page 24: ...any part of the charging circuit whilst the engine is running Disregarding this instruction will result in damage to the regulator or rectifying diodes Main output cables are live even when the engine...

Page 25: ...f nitrogen gas with a suitable pressure reducing valve 3 Correct gas bottle adaptor depending on territory Charging kit 892 00239 Refer to Section 1 Operating charge pressures accumulators are charged...

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