Komatsu WA350-1 Wheel Loader Service Repair Shop Manual (10001 and up) - SEBM04230107

This complete service repair workshop manual PDF download for the WA350-1 Komatsu Wheel Loader (SN: 10001 and up) 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 :

Machine Model : WA350-1
Serial Numbers : 10001 and up


TABLE OF CONTENTS :

10 ENGINE
20 POWER TRAIN
40 STEERING SYSTEM
50 BRAKE AND AIR SYSTEM
60 WORK EQUIPMENT SYSTEM
80 ELECTRIC AND ELECTRONIC SYSTEM
90 OTHERS

- STRUCTURE AND FUNCTION
- TESTING AND ADJUSTING
- DISASSEMBLY AND ASSEMBLY
- MAINTENANCE STANDARD


MANUAL SPECIFICATION :

File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
Product Code : SEBM04230107
Total Pages : 781


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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CONTENTS

10 ENGINE
11 STRUCTURE AND FUNCTION
ENGINE MOUNT
RADIATOR
FUEL TANK AND PIPING
ENGINE CONTROL
12 TESTING AND ADJUSTING
STANDARD VALUE TABLE
TOOL LIST FOR TESTING AND ADJUSTING
ADJUSTING VALVE CLEARANCE
MEASURING COMPRESSION PRESSURE
TESTING AND ADJUSTING FUEL INJECTION TIMING
MEASURING ENGINE OIL PRESSURE AND TEMPERATURE
MEASURING BLOW-BY PRESSURE
TESTING AND ADJUSTING FAN BELT TENSION
MEASURING EXHAUST GAS COLOR
MEASURING ACCELERATOR PEDAL OPERATING FORCE AND OPERATING ANGLE
ADJUSTING FUEL CUT SOLENOID
13 DISASSEMBLY AND ASSEMBLY
STARTING MOTOR ASSEMBLY
REMOVAL
INSTALLATION
ALTERNATOR ASSEMBLY
REMOVAL
INSTALLATION
FUEL INJECTION PUMP ASSEMBLY
REMOVAL
INSTALLATION
WATER PUMP ASSEMBLY
REMOVAL
INSTALLATION
NOZZLE HOLDER ASSEMBLY
REMOVAL
INSTALLATION
CYLINDER HEAD ASSEMBLY
REMOVAL
INSTALLATION
TURBOCHARGER ASSEMBLY
REMOVAL
INSTALLATION
COMPRESSOR ASSEMBLY
REMOVAL
INSTALLATION
RADIATOR ASSEMBLY
REMOVAL
INSTALLATION
OIL COOLER ASSEMBLY
REMOVAL
INSTALLATION
ENGINE ASSEMBLY
REMOVAL
INSTALLATION
FUEL TANK
REMOVAL
INSTALLATION

20 POWER TRAIN
21 STRUCTURE AND FUNCTION
GENERAL
HYDRAULIC CIRCUIT FOR POWER TRAIN
HYDRAULIC CIRCUIT DIAGRAM FOR POWER TRAIN
TORQUE CONVERTER AND TRANSMISSION PIPING
TORQUE CONVERTER CHARGING PUMP
TORQUE CONVERTER
TORQUE CONVERTER OIL FILTER
TORQUE CONVERTER OIL COOLER
TORQUE CONVERTER RELIEF VALVE
TRANSMISSION
TRANSMISSION CONTROL VALVE
UPPER VALVE
LOWER VALVE
TRANSMISSION SOLENOID VALVE
EMERGENCY MANUAL SPOOL
PRIORITY VALVE
MODULATING VALVE AND QUICK RETURN VALVE
ACCUMULATOR VALVE
PILOT REDUCING VALVE
TRANSMISSION PILOT FILTER
TRANSFER
DRIVE SHAFT
AXLE MOUNT
AXLE AND DIFFERENTIAL
TORQUE PROPORTIONING DIFFERENTIAL
FINAL DRIVE
TIRE AND WHEEL
22 TESTING AND ADJUSTING
STANDARD VALUE TABLE
TOOL LIST FOR TESTING AND ADJUSTING
MEASURING ENGINE STALL SPEED
MEASURING OIL PRESSURE OF TORQUE CONVERTER AND TRANSMISSION
MEASURING SHIFT LEVER
METHOD FOR OPERATION OF EMERGENCY MANUAL SPOOL
TIRE AND WHEEL
TROUBLESHOOTING
PRECAUTIONS WHEN TROUBLESHOOTING
METHOD OF READING TROUBLESHOOTING TABLE
PREVENTING RECURRENCE OF TROUBLE
METHOD OF LOCATING MAIN PROBLEM POINTS WHEN TROUBLESHOOTING TRANSMISSION SYTEM
TROUBLESHOOTING TABLE
1. MACHINE DOES NOT MOVE
2. MACHINE LACKS POWER OR SPEED
3. EXCESSIVE TIME LAG WHEN STARTING MACHINE OR SHIFTING GEAR
4. TORQUE CONVERTER OIL TEMPERATURE TOO HIGH
23 DISASSEMBLY AND ASSEMBLY
TORQUE CONVERTER CHARGING PUMP
REMOVAL
INSTALLATION
TORQUE CONVERTER, TRANSMISSION, TRANSFER ASSEMBLY
REMOVAL
INSTALLATION
TORQUE CONVERTER ASSEMBLY
DISASSEMBLY
ASSEMBLY
TRANSMISSION ASSEMBLY
DISASSEMBLY
ASSEMBLY
TRANSFER ASSEMBLY
DISASSEBLY
ASSEMBLY
TRANSMISSION CONTROL VALVE
REMOVAL
INSTALLATION
LOWER VALVE
DISASSEMBLY
ASSEMBLY
UPPER VALVE
DISASSEMBLY
ASSEMBLY
FRONT DIFFERENTIAL
REMOVAL
INSTALLATION
REAR DIFFERENTIAL
REMOVAL
INSTALLATION
DIFFERENTIAL
DISASSEMBLY
ASSEMBLY
FRONT AXLE
REMOVAL
INSTALLATION
REAR AXLE
REMOVAL
INSTALLATION
DRIVE SHAFT
DISASSEMBLY
ASSEMBLY
FINAL DRIVE
DISASSEMBLY
ASSEMBLY
24 MAINTENANCE STANDARD
TRANSMISSION AND ENGINE MOUNT
TORQUE CONVERTER CHARGING PUMP
TORQUE CONVERTER
TORQFLOW TRANSMISSION
1. TRANSMISSION
2. TRANSMISSION CONTROL VALVE
3. SOLENOID VALVE
TRANSFER
DIFFERENTIAL
FINAL DRIVE
DRIVE SHAFT
AXLE MOUNT

40 STEERING SYSTEM
41 STRUCTURE AND FUNCTION
GENERAL
HYDRAULIC CIRCUIT FOR STEERING
HYDRAULIC CIRCUIT DIAGRAM FOR STEERING
OPERATIONS OF STEERING VALVE
STEERING CONTROL SYSTEM
STEERING VALVE
STEERING RELIEF VALVE
SAFETY VALVE (DIFFERENTIAL TYPE)
OPERATION OF DEMAND POOL
TWO-WAY RESTICTOR VALVE
STEERING CYLINDER
STEERING COLUMN AND GEAR BOX
CENTER HINGE PIN
STEERING LINKAGE
EMERGENCY STEERING PUMP (IF EQUIPPED)
DIVERTER VALVE (IF EQUIPPED)
SECURITY VALVE (IF EQUIPPED)
42 TESTING AND ADJUSTING
STANDARD VALUE TABLE
TOOL LIST FOR TESTING AND ADJUSTING
MEASURING STEERING WHEEL PLAY
MEASURING OPERATING FORCE OF STEERING WHEEL
OPERATING TIME OF STEERING WHEEL LOCK TO LOCK
TESTING STEERING LINKAGE
ADJUSTING STEERING LINKAGE
STEERING OIL PRESSURE
TROUBLESHOOTING
TROUBLESHOOTING TABLE
1. STEERING WHEEL DOES NOT TURN
2. STEERING WHEEL IS SLUGGISH
3. STEERING WHEEL MOVES UNSTEADILY OR IS SUBJECTED TO LARGE SHOCK
4. MACHINE TENDS TO TURN NATURALLY IN ONE PARTICULAR DIRECTION WHEN TRAVELING
5. LEFT AND RIGHT TURNING RADII ARE DIFFERENT
43 DISASSEMBLY AND ASSEMBLY
STEERING GEAR
REMOVAL
INSTALLATION
DISASSEMBLY
ASSEMBLY
STEERING VALVE
REMOVAL
INSTALLATION
DISASSEMBLY
ASSEMBLY
STEERING CYLINDER
REMOVAL
INSTALLATION
DISASSEMBLY
ASSEMBLY
CENTER HINGE PIN
REMOVAL
INSTALLATION
44 MAINTENANCE STANDARD
STEERING LINKAGE
STEERING COLUMN AND GEAR BOX
STEERING VALVE
STEERING CYLINDER MOUNT
STEERING CYLINDER
CENTER HINGE PIN
DIVERTER VALVE (IF EQUIPPED)
EMERGENCY STEERING PUMP (IF EQUIPPED)
SECURITY VALVE (IF EQUIPPED)

50 BRAKE AND AIR SYSTEM
51 STRUCTURE
GENERAL
AIR TANK
SAFETY VALVE
BRAKE VALVE
BRAKE ACTUATED
OPERATING IN BALANCE
BRAKE RELEASED
AIR GOVERNOR
TWO-WAY VALVE
BRAKE CHAMBER
SLACK ADJUSTER
BRAKE
PARKING BRAKE
PARKING BRAKE SOLENOID VALVE
SPRING CYLINDER
BRAKE CALIPER
52 TESTING AND ADJUSTING
STANDARD VALUE TABLE
TOOL LIST FOR TESTING AND ADJUSTING
MEASURING BRAKE PEDAL
MEASURING AIR
BRAKE PERFORMANCE
CHECKING BRAKE PISTON LEAKAGE
MEASURING WEAR OF BRAKE DISC
AIR BLEEDING FROM BRAKE LINE
PARKING BRAKE PERFORMANCE
CHECKING AND ADJUSTING PARKING BRAKE
TROUBLESHOOTING
TROUBLESHOOTING
1. AIR PRESSURE DOES NOT RISE AT ALL
2. AIR PRESSURE DOES NOT RISE TO THE SPECIFIED RANGE
3. BRAKE IS INEFFECTIVE OR NOT VERY EFFECTIVE
4. BRAKE DOES NOT RELEASE, OR DRAGS
5. PARKING BRAKE DOES NOT RELEASE, OR DRAGS
53 DISASSEMBLY AND ASSEMBLY
AIR GOVERNOR
DISASSEMBLY
ASSEMBLY
BRAKE VALVE
REMOVAL
INSTALLATION
DISASSEMBLY
ASSEMBLY
BRAKE CHAMBER
REMOVAL
INSTALLATION
DISASSEMBLY
ASSEMBLY
SLACK ADJUSTER
REMOVAL
INSTALLATION
DISASSASSEMBLY
ASSEMBLY
BRAKE ASSEMBLY
DISASSEMBLY
ASSEMBLY
SPRING CYLINDER
REMOVAL
INSTALLATION
DISASSEMBLY
ASSEMBLY
PARKING BRAKE
REMOVAL
INSTALLATION
PARKING BRAKE PAD
REMOVAL
INSTALLATION
54 MAINTENANCE STANDARD
BRAKE VALVE
BRAKE CHAMBER
SLACK ADJUSTER
BRAKE
PARKING BRAKE
SPRING CYLINDER

60 WORK EQUIPMENT SYSTEM
61 STRUCTURE AND FUNCTION
GENERAL
HYDRAULIC CIRCUIT SYSTEM
HYDRAULIC CIRCUIT DIAGRAM (FOR 2-SPOOL)
HYDRAULIC CIRCUIT DIAGRAM (FOR 3-SPOOL, WITH EMERGENCY STEERING (IF EQUIPPED))
BUCKET LINKAGE
BUCKET POSITIONER AND BOOM KICK-OUT
HYDRAULIC TANK
OIL FILTER BYPASS VALVE
BREATHER
HYDRAULIC AND STEERING PUMPS
MAIN CONTROL VALVE (FOR 2-SPOOL)
MAIN CONTROL VALVE (FOR 3-SPOOL (IF EQUIPPED))
RELIEF VALVE
SAFETY VALVE
SUCTION VALVE
HYDRAULIC CYLINDER
62 TESTING AND ADJUSTING
STANDARD VALUE TEST
TOOL LIST FOR TESTING AND ADJUSTING
MEASURING DUMP AND LIFT CONTROL LEVERS
ADJUSTING DUMP AND LIFT CONTROL LEVERS
MEASURING HYDRAULIC PRESSURE
MEASURING LIFT ARM AND BUCKET
MEASURING HYDRAULIC DRIFT OF LIFT ARM AND BUCKET
ADJUSTING BUCKET POSITIONER
ADJUSTING BOOM KICK-OUT
TROUBLESHOOTING
TROUBLESHOOTING TABLE
1. LIFT ARM DOES NOT RISE
2. LIFT ARM MOVES SLOWLY OR DOES NOT HAVE SUFFICIENT LIFTING POWER
3. LIFT ARM MOVEMENT BECOMES SLOW AFTER IT REACHES A CERTAIN HEIGHT
4. BUCKET CANNOT BE HELD DOWN WITH LIFT ARM CYLINDER
5. LIFT ARM HAS LARGE HYDRAULIC DRIFT
6. LIFT ARM MOVEMENT IS UNSTEADY DURING WORK
7. LIFT ARM DESCENDS MOMENTARILY WHEN CONTROL LEVER IS SHIFTED FROM "HOLD" TO "RAISE"
8. BUCKET DOES NOT TILT BACK
9. BUCKET MOVES SLOWLY OR HAS INSUFFICIENT TILT BACK POWER
10. BUCKET MOVEMENT BECOMES SLOW DURING TILT BACK
11. BUCKET CANNOT BE HELD DOWN BY THE BUCKET CYLINDER
12. BUCKET HAS LARGE HYDRAULIC DRIFT
13.BUCKET MOVES UNSTEADILY WHEN MACHINE TRAVEL UNDER LOAD (MAIN CONTROL VALVE IN "HOLD")
14. BUCKET DUMPS MOMENTARILY WHEN CONTROL
15. CONTROL LEVERS OF LIFT ARM AND DUMP MOVE STIFFLY AND SLUGGISHLY
63 DISASSEMBLY AND ASSEMBLY
HYDRAULIC TANK
REMOVAL
INSTALLATION
HYDRAULIC FILTER
REMOVAL
INSTALLATION
HYDRAULIC, STEERING PUMP
REMOVAL
INSTALLATION
MAIN CONTROL VALVE
REMOVAL
INSTALLATION
DISASSEMBLY
ASSEMBLY
DUMP CYLINDER
REMOVAL
INSTALLATION
LIFT CYLINDER
REMOVAL
INSTALLATION
HYDRAULIC CYLINDER ASSEMBLY
DISASSEMBLY
ASSEMBLY
WORK EQUIPMENT
REMOVAL
INSTALLATION
COUNTERWEIGHT
REMOVAL
INSTALLATION
64 MAINTENANCE STANDARD
MAIN CONTROL VALVE (FOR 2-SPOOL)
MAIN CONTROL VALVE (FOR 3-SPOOL)(IF EQUIPPED)
DUMP CYLINDER
LIFT CYLINDER
BUCKET LINKAGE
BUCKET POSITIONER AND BOOM KICK-OUT
BUCKET
HYDRAULIC AND STEERING PUMP

80 ELECTRIC AND ELECTRONIC SYSTEM
81 STRUCTURE AND FUNCTION
ELECTRIC AND ELECTRONIC SYSTEM
ELECTRICAL WIRING DIAGRAM
ELECTRICAL WIRING DIAGRAM CIRCUIT
ENGINE STARTING CIRCUIT
ENGINE STOP CIRCUIT
PREHEATING CIRCUIT
PREHEATING WITH HEATER CIRCUIT
PREHEATING WITH STARTING SWITCH
AUTOMATIC PREHEATING
COMBINATION SWITCH
ELECTRICAL TRANSMISSION CONTROL
ELECTRICAL TRANSMISSION CONTROL DIAGRAM
TRANSMISSION CUT-OFF SWITCH
TRANSMISSION CUT-OFF SELECTOR SWITCH
NEUTRALIZER RELAY
ELECTRICAL PARKING BRAKE CONTROL
ELECTRONIC VEHICLE MONITORING SYSTEM (EVMS)
MONITOR PANEL
INDICATION ON MONITOR PANEL
CONTROLLER
SENSOR
WIRING HARNESS
OPERATION OF PROXIMITY SWITCH
82 TESTING AND ADJUSTING
ADJUSTING SPEEDOMETER MODULE IN THE VEHICLE MONITOR
TROUBLESHOOTING
BEFORE TROUBLESHOOTING
METHOD OF USING YES-NO TROUBLESHOOTING FLOW CHART
CONNECTOR TERMINAL NUMBERS
PRECAUTION WHEN HANDLING CONNECTOR
ELECTRICAL WIRING DIAGRAM
ELECTRICAL CIRCUIT SYSTEM
TROUBLESHOOTING CHART FOR ELECTRIC DIAGRAM
E-1 ENGINE DOES NOT START
E-2 ENGINE DOES NOT STOP
E-3 ENGINE STOPS WHEN TRAVELING
E-4 PARKING BRAKE DOES NOT WORK
E-5 PARKING BRAKE IS APPLIED WHEN TRAVELING
E-6 PARKING BRAKE IS RELEASED WHEN STARTING SWITCH IS TURNED TO ON
E-7 TRANSMISSION IS NOT RETURENED TO NEUTRAL WHEN PARKING BRAKE IS APPLIED
E-8 MACHINE DOES NOT TRAVEL FORWARD
E-9 MACHINE DOES NOT TRAVEL REVERSE
E-10 TRANSMISSION DOES NOT SHIFT GEAR (F-R SWITCH NORMAL)
E-11 MACHINE DOES NOT TRAVEL WHEN TRANSMISSION CUT-OFF SWITCH IS ON
E-12 TRANSMISSION CANNOT BE CUT-OFF
E-13 TRANSMISSION DOES NOT RETURN TO NEUTRAL
E-14 PREHEATING DISPLAY DOES NOT GO OUT
E-15 PREHEATING DOES NOT WORK
ELECTRONIC VEHICLE MONITORING SYSTEM
TROUBLESHOOTING TABLE (ELECTRONIC VEHICLE MONITORING SYSTEM)
TROUBLESHOOTING CHART FOR ELECTRIC VEHICLE MONITORING SYSTEM (M-1 TO M-33)
M-1 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NOT ABNORMALITY IN MACHINE, BRAKE OIL LEVEL DISPLAY FLASHES
M-2 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NOT ABNORMALITY IN MACHINE, ENGINE OIL LEVEL DISPLAY FLASHES
M-3 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NOT ABNOMALITY IN MACHINE, COOLANT LEVEL DISPLAY FLASHES
M-4 BATTERY CHARGE DISPLAY FLASHES
M-5 FUEL LEVEL DISPLAY FLASHES
M-6 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NO ABNORMLITY IN MACHINE FAILURE IN BRAKE LINE DISPLAY FLASHES
M-7 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NOT ABNORMALITY IN MACHINE, ENGINE OIL PRESSURE DISPLAY FLASHES
M-8 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NOT ABNORMLITY IN MACHINE, COOLANT LEVEL DISPLAY FLASHES
M-9 EVEN WHEN ENGINE IS STOPPED AND THERE IS NOT ABNORMALITY IN MACHINE, DROP IN AIR PRESSURE DISPLAY FLASHES
M-10 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NO ABNORMALITY IN MACHINE, COOLANT TEMPERATURE DISPLAY FLASHES
M-11 EVEN WHEN ENGINE IS STOPPED, AND THERE IS NOT ABNORMALITY IN MACHINE, TORQUE CONVERTER OIL TEMPERATUER DISPLAY FLASHES
M-12 PARKING BRAKE DISPLAY LIGHTS UP ABNORMALLY, OR DOES NOT LIGHT UP
M-13 WORKING LAMP DISPLAY LIGHTS UP ABNORMALLY, OR DOES NOT LIGHT UP
M-14 PREHEAT DISPLAY LIGHTS UP ABNORMALLY
M-15 FAILURE IN MAIN STEERING DISPLAY LIGHT UP ABNORMALLY, OR DOES NOT LIGHT UP (IF EQUIPPED)
M-16 EMERGENCY STEERING NORMAL DISPLAY LIGHTS UP ABNORMALLY, OR DOES NOT LIGHT UP (IF EQUIPPED)
M-17 TRANSMISSION CUT-OFF DISPLAY LIGHTS UP ABNORMALLY, OR DOES NOT LIGHT UP
M-18 TURN SIGNAL LAMPS, HIGH BEAM LIGHT UP ABNORMALLY, OR DOES NOT LIGHT UP
M-19 SPEEDOMETER DISPLAY DOES NOT WORK NORMALLY
M-20 SERVICEMETER DISPLAY DOES NOT WORK NORMALLY
M-21 ALL OR PART OF MONITOR PANEL DOES NOT WORK NORMALLY, IF ANY FUSE IS BROKEN, REPLACE AFTER CHECKING
M-22 EVEN WHEN ENGINE STOPPED, ENGINE OIL PRESSURE DISPLAY FLASHES, OR BATTERY CHARGE DISPLAY FLASHES
M-23 NO LAMPS ON MONITOR LIGHT UP (IMMEDIATELY AFTER TURNING STARTING SWITCH TO ON, ENGINE STOPPED)
M-24 CENTRAL WARNING LAMP DOES NOT GO OUT
M-25 CENTRAL WARNING BUZZER DOES NOT STOP
M-26 NONE OF PANEL LAMPS ON MONITOR LIGHT UP
M-27 SOME OF PANEL LAMPS ON MONITOR DO NOT LIGHT UP
M-28 EMERGENGY ITEM IS FLASHING, BUT ALARM BUZZER DOES NOT SOUND
M-29 EMERGENCY ITEM OR NON-EMERGENCY ITEM IS FLASHING, BUT WARNING LAMP DOES NOT FLASH
M-30 ABNORMALITY IN FUEL GAUGE
M-30-1 ABNORMALTIY IN FUEL GAUGE SENSOR
M-31 ABNORMALITY IN AIR PRESSURE GAUGE
M-32 ABNORMALITY IN COOLANT TEMPERATUERE GAUGE
M-33 ABNORMALITY IN TORQUE CONVERTER OIL TEMPERATURE GAUGE
83 DISASSEMBLY AND ASSEMBLY
MACHINE MONITOR
REMOVAL
INSTALLATION

90 OTHERS
91 OTHERS
CAB
AIR CONDITIONER (IF EQUIPPED)
PIPING
AIR CONDITIONER WIRING DIAGRAM
AIR CONDITIONER ELECTRIC CIRCUIT
AIR CONDITIONER UNIT
93 DISASSEMBLY AND ASSEMBLY
CAB
REMOVAL
INSTALLATION
AIR CONDITIONER UNIT
REMOVAL
INSTALLATION
CONDENSER FOR AIR CONDITIONER
REMOVAL
INSTALLATION
DRY RECEIVER
REMOVAL
INSTALLATION
COMPRESSOR FOR AIR CONDITIONER
REMOVAL
INSTALLATION
97 GEAR PUMP
97 GENERAL
GENERAL
PRINCIPLE OF OPERATION
PRESSURE LOADED TYPE GEAR PUMP
FIXED SIDE PLATE TYPE GEAR PUMP
97 SA SERIES
STRUCTURE
TESTING AND ADJUSTING
DISASSEMBLY
ASSEMBLY
MAINTENANCE STANDARD

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