JCB JS Machines Track Service Manual 9803/3010-4 Email Delivery Repair Service Workshop PDF

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JCB JS Machines Track Service Manual 9803/3010-4

File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
P/N : 9803/3010-4
Total Pages : 66

DESCRIPTION:

JCB JS Machines Track Service Manual 9803/3010-4

INTRODUCTION:

System Life and Components Wear
Life and wear are generally related to ground characteristics and the environment.
Ground Characterisitics
Abrasiveness Rating:
– High abrasiveness rated grounds include wet soils containing high amounts of hard and sharp sand particles.
– Moderate abrasiveness rated grounds include slightly damp soils that contain a low portion of rounded sand particles or rock fragments
– Low abrasiveness rated grounds include dry silt and clay soils without any content of rocks and sands
Impact:
– impact can be described as the amount of grouser penetration in the ground.
– The effect can be reduced by decreasing machine speed and by using the smallest track shoes possible.
– The weight of the machine is also a determining parameter, even if it can not be modified.
Packing
– Packing materials are any material that stick to or pack around moving components.
– Packing materials can be classified as extrudable and non-extrudable.
Major effects:
– Incorrect engagement between the components causing tightening of the track chain, high loads on the undercarriage components, interference and dramatically increases the wear rate.
– Abnormal increase of the wear effect due to abrasive particles incorporated in the packed material.
– Moderate amounts of moisture contribute to packing.

TABLE OF CONTENTS:

JCB JS Machines Track Service Manual 9803/3010-4

Introduction
System Life and Components Wear 2 – 1
Ground Characterisitics 2 – 1
Enviroment 2 – 1
Terrain 2 – 2
Application Effects 2 – 3
Wear Rate Variables 2 – 3
Checking and Adjusting Track Tension 2 – 4
Links
Link Rail Wear 3 – 7
Measurement Techniques 3 – 7
Wear Limits – Service and Destruction 3 – 7
Wear Charts 3 – 7
Rebuildability 3 – 7
Link Wear Patterns 3 – 9
Rail (Top) Wear 3 – 9
Uneven Scalloping Wear on Rail Top 3 – 9
Rail Side Wear 3 – 10
Rail Inside Gouged 3 – 10
Pin Boss Top Worn 3 – 10
Elongation of Counterbore 3 – 11
Depth Wear in Counterbore 3 – 11
Face Wear 3 – 12
Pin Boss End – Guiding Guard Wear 3 – 12
Link Structural Problems 3 – 13
Rail Chipping or Flaking 3 – 13
Link Cracking 3 – 13
Pin & Bush Bore Enlargement 3 – 14
Track Pins & Bushes
Track Bush Wear 4 – 15
Measurement Technique 4 – 15
How to Interpret Wear on Track Bushes 4 – 18
External Wear – Assembled or Disassembled Track 4 – 18
Other Wear Patterns-Disassembled Track End Wear 4 – 19
Structural Problems on Bushes 4 – 20
Track Pitch Internal Wear 4 – 22
Measurement Technique 4 – 22
Wear Limits to Service and Destruction and Percent Worn Chart 4 – 23
Wear and Structural Problems on Track Pins 4 – 24
Pin OD (External) Wear [and Bush ID (Internal) Wear] 4 – 24
Pin End Wear 4 – 24
Pin Loosening 4 – 25
Pin Breakage 4 – 25
Shoes
Shoe Structural Problems 5 – 27
Shoe Bending, Cracking and Breaking 5 – 27
Bolt Hole Opening Out (With loose hardware) 5 – 27
Idlers
Idler Tread wear 6 – 29
Measurement Technique 6 – 29
Wear Limits – Service and Destruction 6 – 29
Section 1 – Contents
Contents
1 – ii 1 – ii
Contents Page No
Idler Wear Patterns 6 – 30
Tread Wear – Normal wear pattern 6 – 30
Flange Side Wear 6 – 30
Flange Top Wear (may be domed) 6 – 31
Carrier Rollers
Carrier Roller Tread Wear 7 – 33
Measurement Technique 7 – 33
Wear Limits – Service or Destruction 7 – 33
Wear Charts 7 – 33
Rebuildability 7 – 33
Carrier Roller Wear Patterns 7 – 34
Tread Wear (Uniform) 7 – 34
Uneven Flange Side Wear and Offcentre Tread Wear 7 – 34
Flat Spots on Tread 7 – 35
Track Rollers
Roller Tread Wear 8 – 37
Tread Measurement Technique 8 – 37
Roller Wear Patterns 8 – 39
Tread Wear (Normal wear pattern) 8 – 39
Flange Side Wear (Inner and/or outer sides facing tread) 8 – 40
Flange Top Wear 8 – 40
Sprockets
Sprocket Wear 9 – 41
Sprocket Wear Patterns 9 – 42
Root Wear 9 – 42
Reverse and/or Forward Drive Side Wear 9 – 43
Reverse Drive Side Tip Wear 9 – 43
Forward Drive Side Tip Wear 9 – 44
Sprocket Side Wear and Corner Wear or Gouging 9 – 44
Guards
Guiding Guard Wear 10 – 45
Need For Roller Guards 10 – 46
Conditions For Considered Use Of Roller Guards 10 – 47
Service information
Bush Wear Guide (Ital Track) 11 – 49
Bush Wear Guide (Berco Track) 11 – 50
Pin & Bush Wear Guide (Ital Track) 11 – 51
Pin & Bush Wear Guide (Berco Track) 11 – 52
Track Link Rail Wear Guide (Ital Track) 11 – 53
Track Link Wear Guide (Berco Track) 11 – 54
Upper Roller Wear Guide (Ital Track) 11 – 55
Upper Roller Wear Guide (Berco Track) 11 – 56
Lower Roller Wear Guide (Ital Track) 11 – 57
Lower Roller Wear Guide (Berco Track) 11 – 58
Idler Roller Wear Guide (Ital Track) 11 – 59
Idler Roller Wear Guide (Berco Track) 11 – 60
Track Plate Wear Guide (Ital Track) 11 – 61
Track Plate Wear Guide (Berco Track) 11 – 62