This complete service repair workshop manual PDF download for the Komatsu Trash Compactor WF550-3 & WF550T-3 has easy to read text sections with top quality diagrams, pictures and illustrations. The step by step instructions show you how to fault find or complete any repair or overhaul, correctly and efficiently, saving time and avoiding costly mistakes. All specifications and tolerances are listed. Functions of components and systems are also explained.
APPLICABLE MODELS :
Komatsu WF550-3 - SN: W089-50001 and up
Komatsu WF550T-3 - SN: W090-50001 and up
Engine : S6D140-2
TABLE OF CONTENTS :
00 SAFETY
01 GENERAL
10 STRUCTURE AND FUNCTION
20 TESTING AND ADJUSTING
30 DISASSEMBLY AND ASSEMBLY
40 MAINTENANCE STANDARD
90 OTHERS
MANUAL SPECIFICATION :
File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
Product Code : VEBM090100
Total Pages : 394
This service repair workshop manual PDF download contains specs, diagrams, actual real photo illustrations, and schemes. In addition to space savings, nice thing about having completly searcheble PDF files instead of a hard-printed manual is that you can use the Search feature in your PDF reader software (Adobe Acrobat) to find just what your looking for and just print out the exact pages you need or all manual easily. This is the same Repair Service manual your local dealer will use when doing a repair.
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00 SAFETY
Safety notice
Preparations for work
Precautions during work
Foreword
How to read the shop manual
Volumes
Distribution and updating
Filing method
Symbols
Hoisting instructions
01 GENERAL
Specifications
WF550-3
WF550T-3
Weight table
WF550-3
WF550T-3
10 STRUCTURE AND FUNCTION
General
Outline
Drive unit cooling fan
Hydraulic motor
Cooling fan controller
Forward/reverse timer
Electromagnetic selector valve
Transmission
Main relief, torque converter relief valve
Outline
Operation of main relief valve
Operation of torque converter relief valve
Axle
Front
Rear
Differential
Front differential
Rear differential
Outline
Limited slip differential
Operation of limited slip differential
Mechanism for generation of brake torque of left and right side gears (6)
When travelling in straight line
When turning
Final drive
Outline
Operation
Axle mount, center hinge pin
Outline
Steering piping
Brake piping
Brake
Function
Operation
Parking brake emergency release solenoid valve
Function
Operation
Hydraulic piping
Work equipment lever linkage
WF550T-3
WF550-3
Hydraulic tank
PPC valve
WF550T-3
WF550-3
Operation of PPC valve
Function of PPC valve
Operation
Cut-off valve
WF550-3
Function
Operation of cut-off valve
Operation
Main control valve
WF550T-3
WF550-3
Main relief valve
WF550T-3
Function
Operation
WF550-3
Function
Operation
Safety valve (with suction)
Function
Operation as safety valve
Operation as suction valve
Suction valve
Function
Operation
Float selector valve and unload valve
WF550-3
Function
Operation
Operation (WF550T-3)
Lift spool hold position
Lift spool at raise position
Lift spool at lower position
Lift spool at float position
Operation (WF550-3)
Boom and bucket spool hold position
Boom spool at raise position
Boom spool at lower position
Boom spool at float position
Bucket spool at dump position
Bucket spool at tilt position
Bucket positioner and boom kick-out (WF550-3)
Operation of proximity switch for boom kick-out
Action of proximity switch for boom-kickout
Operation of proximity switch for bucket positioner
Action of proximity switch for bucket positioner
Air conditioner
Air conditioner piping
Machine monitor system
Outline
Main monitor
Outline
Main monitor display function
Main monitor switch function
Preheating output function
Trouble data display mode (when optional controller are installed)
Maintenance monitor
Outline
Maintenance monitor display function
All-Range Electronic Control Automatic Transmission System
Outline of system
System structure diagram
Function
Transmission controller power source
Input signals
Output signals
LED display
Transmission controller
Connector signals
Electric transmission control
Function
Combination switch
Outline
General locations, function
Operation
20 TESTING AND ADJUSTING
Standard value table for engine
Standard value table for chassis
WF550-3
WF550T-3
Standard value table for electrical parts
Table of required tools
Sketch of special tools
Tool N
Measuring blow-by pressure
Measuring engine oil pressure
Adjusting speed sensor
Engine speed sensor
Transmission output shaft speed sensor
Adjusting of engine stop motor cable
Torque converter and transmission oil pressure
Steering oil pressure
Measuring
Adjusting
Measuring parking brake oil pressure
Testing and adjusting PPC oil pressure
Measuring
Adjusting
Adjusting PPC valve linkage
Work equipment hydraulic pressure
Adjusting
Adjusting work equipment lever linkage
Adjusting main monitor (speedometer module)
20 TROUBLESHOOTING
Outline
Connector types and mounting locations
Connector arrangement diagram
20 TROUBLESHOOTING FOR RADIATOR COOLING FAN SYSTEM (EC MODE)
Electric circuit diagram of cooling fan system
EC-1 Fan does not rotate (selector switch position: AUTO)
EC-2
Fan does not rotate (selector switch position: MANUAL)
EC-3
Fan does not switch from forward to reverse rotation (selector switch position: AUTO)
EC-4
Fan does not switch from forward to reverse rotation (selector switch position: MANUAL)
EC-5
Fan does not switch from reverse to forward rotation (selector switch position: AUTO)
EC-6
Fan does not switch from reverse to forward rotation (selector switch position: MANUAL)
EC-7
When direction of fan is switched, it immediately switches
20 TROUBLESHOOTING OF HYDRAULIC AND MECHANICAL SYSTEM (H MODE)
H-1 Blade does not move
H-2 Blade is slow or blade lacks power
H-3, H-4, H-5, H-6
H-3 – When blade is raised, it moves slowly at a certain height
H-4 – Blade cannot be pushed with lift cylinder (blade floats)
H-5 – Excessive hydraulic drift of blade
H-6 – Blade shakes during operation
30 DISASSEMBLY AND ASSEMBLY
Special tool list
Sketches of special tools
Starting motor assembly
Removal
Installation
Engine front seal
Removal
Installation
Radiator assembly
Removal
Installation
Engine assembly
Removal
Installation
Front axle assembly
Removal
Installation
Front differential assembly
Removal
Installation
Rear axle assembly
Removal
Installation
Rear differential assembly
Removal
Installation
Differential gear assembly
Disassembly
Fine disassembly of pinion assembly
Disassembly of differential gear assembly
Assembly
Assembly of differential gear assembly
Fine assembly of pinion assembly
Assembly of differential assembly
Final drive assembly
Disassembly / assembly
Steering cylinder assembly
Removal
Installation
Steering valve assembly
Removal
Installation
Slack adjuster assembly
Removal
Installation
Hydraulic tank assembly
Removal
Installation
PPC valve assembly
Removal
Installation
Main control valve assembly
Removal (WF550-3)
Installation (WF550-3)
Removal (WF550T-3)
Installation (WF550)
Disassembly
WF550T-3
Assembly
WF550T-3
Lift cylinder assembly
Removal (WF550T-3)
Installation (WF550T-3)
Boom, bucket and lift cylinders assembly
Disassembly
Assembly
Work equipment assembly
Removal (WF550T-3)
Installation (WF550T-3)
Engine hood assembly
Removal
Installation
Floor frame assembly
Removal
Installation
Fuel tank assembly
Removal
Installation
Air conditioner condenser assembly
Removal
Installation
Reciver tank
Removal
Installation
40 MAINTENANCE STANDARD
Engine mount
Transmission mount
Damper
Torque converter charging pump
Torque converter, PTO
Transmission
Transfer
Main relief, torque converter relief valve
Lubrication relief valve
Drive shaft
Center support
Differential
Final drive
Axle mount
Center hinge pin
Steering column
Steering pump
Steering valve
Steering cylinder mount
Brake valve
Slack adjuster
Brake
Parking brake
Hydraulik pump
WF550T-3
WF550-3
Switch, PPC pump
PPC valve
WF550T-3
WF550-3
Main control valve
WF550T-3
WF550-3
Cut-off valve
WF550-3
Hydraulic cylinders
WF550T-3
WF550-3
Work equipment linkage
WF550T-3
WF550-3
Bucket positioner and boom kick-out
WF550-3
ROPS cab
90 OTHERS
Hydraulic circuit diagram for power train
Brake circuit diagram
Electric circuit for cooling fan
Work equipment hydraulic circuit diagram (WF550T-3)
Work equipment hydraulic circuit diagram (WF550-3)
Electric circuit diagram (1/4)
Electric circuit diagram (2/4)
Electric circuit diagram (3/4)
Electric circuit diagram (4/4)
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