jcb 446 Service Manual
  1. Manuals
  2. Brands
  3. jcb Manuals
  4. Construction Equipment
  5. 446
  6. Service manual

jcb 446 Service Manual

Wheeled loading shovel
Hide thumbs
Table of Contents

Advertisement

Quick Links

Service Manual
Wheeled Loading Shovel - 446, 456
Section 1 - General Information
Section 2 - Care and Safety
Section 3 - Routine Maintenance
Section A - Attachments
Section B - Body and Framework
Section C - Electrics
Section E - Hydraulics
Section F - Transmission
Section G - Brakes
Section H - Steering
Section K - Engine
Publication No.
9803/4180-11
World Class
Customer Support
Copyright © 2004 JCB SERVICE. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any other means,
electronic, mechanical, photocopying or otherwise, without prior permission from JCB SERVICE.
Issued by JCB Technical Publications, JCB Service, World Parts Centre, Beamhurst, Uttoxeter, Staffordshire, ST14 5PA, England. Tel +44 1889 590312 Fax +44 1889 593377

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 446 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for jcb 446

Summary of Contents for jcb 446

  • Page 1 Customer Support Copyright © 2004 JCB SERVICE. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any other means, electronic, mechanical, photocopying or otherwise, without prior permission from JCB SERVICE.
  • Page 2 Customer Support Copyright © 2004 JCB SERVICE. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any other means, electronic, mechanical, photocopying or otherwise, without prior permission from JCB SERVICE.
  • Page 3 Section 1 - General Information Notes: 1 - 0 9803/4180-08 1 - 0 Find manuals at https://best-manuals.com...

  • Page 4: Table Of Contents

    Section 1 - General Information Contents Page No. Introduction About this Manual ..................1 - 1 Machine Model and Serial Number ............ 1 - 1 Using the Service Manual ..............1 - 1 Section Numbering ................1 - 1 Left Side, Right Side ................1 - 2 Cross References ................
  • Page 5 Section 1 - General Information Contents Page No. 1 - ii 1 - ii Find manuals at https://best-manuals.com...

  • Page 6: Introduction

    General Information - includes torque settings and service tools. T11-004 This publication is designed for the benefit of JCB Care and Safety - includes warnings and cautions Distributor Service Engineers who are receiving, or have pertinent to aspects of workshop procedures etc.

  • Page 7: Left Side, Right Side

    Section 1 - General Information Introduction About this Manual 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. T033800-1 Fig 1. Cross References T1-004_2 In this publication, page cross references are made by presenting the subject title printed in bold, italic and underlined.

  • Page 8: Identifying Your Machine

    The serial numbers of the machine and its major 539000 units are stamped on the plate. Note: The machine model and build specification is World Manufacturer Identification, SLP = JCB indicated by the PIN. Refer to Typical Product Identification Number (PIN). Machine Model, 456ZX...

  • Page 9: Typical Product Identification Number

    Section 1 - General Information Introduction Identifying your Machine Typical Product Identification Number T033160-1. Fig 3. World Manufacturer Identification (3 Digits) Model Number (3 Digits) Loader End Type (1 Digit) O = HT Loader End Z = ZX Loader End Designation (1 Digit) S = Farmmaster O = None Farmmaster...

  • Page 10: Component Identification Plates

    Section 1 - General Information Introduction Identifying your Machine Component Identification Plates Unit Identification Fig 4. The engine serial number is stamped on a plate 4Y which is fastened to the right side of the cylinder block. Fig 5. The transmission serial number is stamped on plate 5Z as shown.
  • Page 11 (FOPS) must be installed. For further information and will invalidate the ROPS/FOPS certification. contact your JCB Dealer INT-2-1-9_6 The falling objects protection structure (FOPS) is fitted with WARNING a dataplate.

  • Page 12: Standard Torque Settings

    For the same reason, a Dacromet nut should not be used with a Zinc or Yellow plated bolt. Note: All bolts used on JCB machines are high tensile and must not be replaced by bolts of a lesser tensile specification.
  • Page 13 Section 1 - General Information Standard Torque Settings Zinc Plated Fasteners and Dacromet Fasteners Table 2. Torque Settings - UNF Grade 'S' Fasteners Bolt Size Hexagon (A/F) Condition 1 Condition 2 kgf m lbf ft kgf m lbf ft 7/16 11.2 10.0 5/16...
  • Page 14 Section 1 - General Information Standard Torque Settings Zinc Plated Fasteners and Dacromet Fasteners Table 4. Metric Grade 10.9 Fasteners Bolt Size Hexagon (A/F) Condition 1 Condition 2 ISO Metric Thread kgf m lbf ft kgf m lbf ft 13.9 10.2 12.5 34.0...
  • Page 15 Section 1 - General Information Standard Torque Settings Zinc Plated Fasteners and Dacromet Fasteners Table 6. Torque Settings - Rivet Nut Bolts/Screws Bolt Size ISO Metric Thread kgf m lbf ft 10.0 24.0 18.0 48.0 35.5 82.0 60.5 Table 7. Torque Settings - Internal Hexagon Headed Cap Screws (Zinc) Bolt Size ISO Metric Thread...

  • Page 16: Hydraulic Connections

    Section 1 - General Information Standard Torque Settings Hydraulic Connections Hydraulic Connections T11-003 'O' Ring Face Seal System Adaptors Screwed into Valve Blocks Adaptor screwed into valve blocks, seal onto an 'O' ring which is compressed into a 45° seat machined into the face of the tapped port.
  • Page 17 Section 1 - General Information Standard Torque Settings Hydraulic Connections Hoses Screwed into Adaptors Fig 8. Hoses 8-B screwed into adaptors 8-A seal onto an `O' ring Note: Dimension 8-D will vary depending upon the torque 8-C which is compressed into a 45° seat machined into the applied.
  • Page 18 Section 1 - General Information Standard Torque Settings Hydraulic Connections Adaptors into Component Connections with Bonded Washers Table 11. BSP Adaptors with Bonded Washers - Torque Settings BSP Size kgf m lbf ft 20.0 15.0 34.0 25.0 75.0 55.0 102.0 10.3 75.0 122.0...

  • Page 19: Torque Stop' Hose System

    Section 1 - General Information Standard Torque Settings Hydraulic Connections 'Torque Stop' Hose System Fig 9. `Torque Stop' Hoses 9-B screwed into adaptors 9-A seal Stop' Hoses have an additional shoulder 9-D, which acts onto an 'O' ring 9-C which is compressed into a 45° seat as a physical stop.

  • Page 20: Service Tools

    The tools listed in the table are special tools required for carrying out the procedures described in this manual. These tools are available from JCB Service. Some tools are available as kits or sets, the part numbers for parts within such kits or sets are not listed here. For full details of all tools, including the content of kits and sets, refer to Tool Detail Reference, Section 1.

  • Page 21: Tool Detail Reference Section

    Section 1 - General Information Service Tools Tool Detail Reference Section Tool Detail Reference Section Section B - Body and Framework Fig 10. 993/68100 Slide Hammer Kit 993/68101 Slide Hammer 993/68107 Bar - M20 x M20 X 800 mm 993/68102 End Stops 993/68108 Adaptor - M20 x 7/8"...
  • Page 22 Section 1 - General Information Service Tools Tool Detail Reference Section Fig 12. 892/00842 Glass Lifter Minimum 2 off - Essential for glass installation, 2 required to handle large panes of glass. Ensure suction cups are protected from damage during storage. Fig 15.
  • Page 23 K Fig 15. ( T supplied. extraction tool. 1-17). Approx 25 m length. Note: 110V models available upon request - contact JCB Technical Service. Fig 19. 926/15500 Rubber Spacer Blocks Used to provide the correct set clearance between glass edge and cab frame. Unit quantity = 500 off.
  • Page 24 Section 1 - General Information Service Tools Tool Detail Reference Section Fig 24. 4104/1310 Hand Cleaner Special blend for the removal of polyurethane adhesives (454g; 1 lb tub). Fig 26. 825/99850 Note: - used with dummy bush to set up Upper Centre Pivot.
  • Page 25 Section 1 - General Information Service Tools Tool Detail Reference Section Fig 27. Cab Prop Note: - used to support cab in the raised position. A minimum of 2 are required to support the side where work is being carried out. It is recommended that 4 are used to support the cab level.Manufacture from mild steel.Tube wall and plate minimum thickness must be 3 1 - 20...

  • Page 26: Section C - Electrics

    Section 1 - General Information Service Tools Tool Detail Reference Section Section C - Electrics Fig 29. 993/85700 Fig 28. 892/00283 Tool Kit Case 892/00298 Fluke Meter 892/00286 Surface Temperature Probe Fig 30. 892/01066 892/00284 Venture Microtach Digital Tachometer 892/00282 100 amp Shunt - open type 892/00285 Hydraulic Temperature Probe 1 - 21 9803/4180-08...
  • Page 27 Section 1 - General Information Service Tools Tool Detail Reference Section MACHINE Fig 31. 892/01174 C031270 Fig 32. 718/20237 1 - 22 9803/4180-08 1 - 22...

  • Page 28: Section E- Hydraulics

    Section 1 - General Information Service Tools Tool Detail Reference Section Section E- Hydraulics 816/55038 3/8 in M BSP x 3/8 in F BSP x Test Point 816/55040 1/2 in M BSP x 1/2 in F BSP x Test Point 892/00263 5/8 in BSP x 5/8 in F BSP x Test Point 892/00264 3/4 in BSP x 3/4 in F BSP x Test Point 892/00265 1 in M BSP x 1 in F BSP x Test Point...
  • Page 29 Section 1 - General Information Service Tools Tool Detail Reference Section Fig 37. Male Cone Blanking Cap 816/00294 1/4 in BSP Fig 39. Hand Pump Equipment 816/00189 3/8 in BSP 892/00223 Hand Pump 816/00190 1/2 in BSP 892/00137 Micro-bore Hose 1/4 in BSP x 5 metres 816/00197 5/8 in BSP 892/00262 1/4 in M BSP x 1/4 in F BSP x Test Point 816/00196 3/4 in BSP...

  • Page 30: Section F - Transmission

    Section 1 - General Information Service Tools Tool Detail Reference Section Section F - Transmission Fig 41. Heavy Duty Socket for Durlock Bolts 892/00817 17 mm A/F x 3/4 in. Square Drive 892/00818 22 mm A/F x 3/4 in. Square Drive 892/00819 15 mm A/F x 1/2 in.
  • Page 31 Section 1 - General Information Service Tools Tool Detail Reference Section Fig 45. 892/00863 Fig 48. 892/01001 Bearing Tool 892/01004 Bearing Tool 892/01005 Bearing Tool Fig 46. 892/00891 Fig 49. 892/01002 Fig 47. 892/01000 Bearing Puller 892/01003 Bearing Puller Fig 50. 892/01006 1 - 26 9803/4180-08 1 - 26...
  • Page 32 Section 1 - General Information Service Tools Tool Detail Reference Section Fig 51. 892/01013 Lifting Eye 892/01015 Lifting Eye Fig 52. 892/01007 Pipe Swaging Tool 892/01008 Pipe Swaging Tool 892/01009 Pipe Swaging Tool 892/01010 Pipe Swaging Tool Fig 53. 892/01014 1 - 27 9803/4180-08 1 - 27...

  • Page 33: Section G - Brakes

    Section 1 - General Information Service Tools Tool Detail Reference Section Section G - Brakes Fig 54. 892/00239 Fig 55. 892/00041 Note: De-glazing Tool for Cylinder Bores (to assist bedding-in of new piston rings 1 - 28 9803/4180-08 1 - 28...

  • Page 34: Service Aids

    A medium strength sealant suitable for all sizes of 4102/1212 50 ml gasket flanges, and for hydraulic fittings of 25-65 mm diameter. JCB High Strength Threadlocker A high strength locking fluid for use with threaded 4102/0551 50 ml components. Gasketing for all sizes of flange where the strength of the joint is important.
  • Page 35 Section 1 - General Information Service Aids Sealing and Retaining Compounds Page left intentionally blank 1 - 30 9803/4180-08 1 - 30...

  • Page 36: Terms And Definitions

    The following colour coding, used on illustrations to denote various conditions of oil pressure and flow, is standardised throughout JCB Service Publications. Full Pressure: Pressure generated from operation of a service. Depending on application this may be anything between neutral circuit pressure and MRV operating pressure.

  • Page 37: Black And White Codes

    The following black and white coding, used on illustrations to denote various conditions of oil pressure and flow, is standardised throughout JCB Service Publications. Neutral Circuit Pressure Pressure generated by the operation of a service. Depending on application this may be anything between Neutral Circuit Pressure and MRV Operation Pressure.

  • Page 38: Basic Operation

    Section 1 - General Information Basic Operation Preparation for Towing Do not tow a machine unless there is no alternative. Attach the chain to the rear towing point. (If using Remember that further damage might be caused to the chains). machine by towing it.
  • Page 39 Section 1 - General Information Basic Operation Preparation for Towing Page left intentionally blank 1 - 34 9803/4180-08 1 - 34...
  • Page 40 Customer Support Copyright © 2004 JCB SERVICE. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any other means, electronic, mechanical, photocopying or otherwise, without prior permission from JCB SERVICE.
  • Page 41 Section 2 - Care and Safety Notes: 2 - 0 9803/4180-08 2 - 0...
  • Page 42 Section 2 - Care and Safety Contents Page No. Safety Notices Important Information ................2 - 1 The Operator Manual ................. 2 - 1 Safety Warnings ................. 2 - 1 Safety Check List ..................2 - 2 Safety - Yours and Others ..............2 - 2 General Safety ...................
  • Page 43 Section 2 - Care and Safety Contents Page No. 2 - ii 2 - ii...

  • Page 44: Safety Notices

    Operator Manual. If you do not other operators. understand anything, ask your employer or JCB dealer to explain it. In this publication and on the machine, there are safety INT-1-4-2 notices.

  • Page 45: Safety Check List

    JCB distributor to explain them. with it. If you don't, you will not do your job well, and you will be a danger to yourself and others.
  • Page 46 Sparks in altered in any way which could affect or invalidate any such an area could cause an explosion or fire of these requirements. For advice consult your JCB resulting in death or serious injury. Distributor.

  • Page 47: Operating Safety

    Section 2 - Care and Safety Safety Notices Safety Check List Operating Safety WARNING Work Sites WARNING Work sites can be hazardous. Inspect the site before working on it. You could be killed or injured if the Machine Condition ground gives way under your machine or if piled A defective machine can injure you or others.
  • Page 48 Do not lights, windows and mirrors clean. machine potentially explosive atmosphere, i.e. combustible vapours, gas or dust, Do not operate the machine if you cannot see clearly. without first consulting your JCB Distributor. 5-1-4-7 INT-2-1-14 WARNING CAUTION Electrical Power Cables Regulations...
  • Page 49 5-5-1-1_2 WARNING WARNING High Loads Use only the JCB approved attachments that are A high load can block your view and reduce the specified for your machine. Operating with non- machine's stability. Travel with the load low to the specified attachments can overload the machine, ground.

  • Page 50: Maintenance Safety

    Section 2 - Care and Safety Safety Notices Safety Check List Maintenance Safety WARNING Fires WARNING If your machine is equipped with a fire extinguisher, make sure it is checked regularly. Keep it in the correct Communications machine location until you need to use it. Bad communications can cause accidents.
  • Page 51 This as a preview PDF file from best-manuals.com Download full PDF manual at best-manuals.com...

This manual is also suitable for:

456

Table of Contents