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Komatsu
Compact Loader
WA380-6
Komatsu WA380-6 Service Manual
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OPERATION
EXPLANATION OF COMPONENTS
MAIN POWER SWITCH
Use
the
switch
(1)
to
turn
the
main
power
of
the
air
conditioner
ON/OFF.
When
the
switch
is
pressed,
display
monitor
(A)
lights
up.
The
fan
begins
operation.
When
the
switch
is
pressed
again,
the
air
conditioner
is
turned
OFF
and
the
display
monitor
goes
out. The
fan
stops.
(When
the
switch
is
turned
ON,
the
setting
displayed
is
the
same
as
when
the
air
conditioner
was
turned
OFF.)
3 - 85
141
143
Table of Contents
Table of Contents
9
Before Reading this Manual
3
Safety Information
4
Introduction
5
Use of Machine
5
Front/Rear, Left/Right Directions of Machine
6
Visibility from Operator's Seat
6
Necessary Information
7
Product Identification Number (Pin)/Machine Serial No. Plate
7
Engine Serial No. Plate
7
Position of Service Meter
8
Table of Contents
9
Safety Labels
16
Location of Safety Labels
16
Safety Labels
17
Wear Well-Fitting Clothes and Protective Equipment
24
Inspecting Machine
24
Precautions Regarding Safety-Related Equipment
24
Ensuring Safe Operation
24
General Precautions Common to Operation and Maintenance
24
Understanding the Machine
24
Precautions before Starting Operation
24
Preparations for Safe Operation
24
Keep Machine Clean
25
Precautions Inside Operator's Compartment
25
Provide Fire Extinguisher and First Aid Kit
25
If any Problem Is Found
25
Action if Fire Occurs
26
Precautions to Prevent Fire
26
Fire Prevention
26
Precautions When Getting on or off Machine
27
Use Handrails and Steps When Getting on or off Machine
27
No Jumping on or off Machine
27
No People on Attachments
27
Precautions When Standing up from Operator's Seat
28
Precautions When Cleaning Cab Glass
29
Precautions When Leaving Machine
29
Emergency Exit from Operator's Cab
29
Precautions Related to Protective Structures
30
Unauthorized Modification
30
Do Not Get Caught in Articulating Portion
30
Precautions Related to Attachments and Options
31
Precautions When Running Engine Inside Building
31
Precautions for Operation
32
Precautions for Jobsite
32
Investigate and Confirm Jobsite Conditions
32
Working on Loose Ground
32
Do Not Go Close to High-Voltage Cables
33
Ensure Good Visibility
33
Checking Signs and Signalman's Signals
33
Starting Engine
34
Beware of Asbestos Dust
34
Precautions in Cold Areas
35
Inspection and Maintenance before Starting Engine
35
Precautions When Starting Engine
35
Operation
36
Starting with Booster Cables
36
Checks before Operation
36
Precautions When Traveling in Forward or Reverse
37
Precautions When Traveling
38
Traveling on Slopes
39
Method of Using Brakes
39
Precautions When Operating
40
Prohibited Operations
41
Traveling on Snow-Covered or Frozen Surfaces
41
Parking Machine
42
Transportation
43
Loading and Unloading
43
Precautions When Towing
44
Towing
44
Precautions before Starting Inspection and Maintenance
45
Display Warning Tag During Inspection and Maintenance
45
Keep Workplace Clean and Tidy
45
Select Suitable Place for Inspection and Maintenance
45
Only Authorized Personnel
45
Appoint Leader When Working with Others
45
Precautions for Maintenance
45
Stop Engine before Carrying out Inspection and Maintenance
46
Two Workers for Maintenance When Engine Is Running
48
Turning E.C.s.s. Switch off before Carrying out Inspection and Maintenance
48
Installing, Removing, or Storing Attachments
49
Precautions When Working at High Places
49
Precautions When Working under Machine or Work Equipment
49
Proper Tools
49
Handling Battery
50
Precautions for Inspection and Maintenance
50
Precautions When Welding
50
Precautions When Using Hammer
51
Precautions with High-Temperature Coolant
51
Precautions with High-Temperature Oil
51
Precautions with High-Pressure Oil
52
Precautions with High-Pressure Fuel
52
Handling High-Pressure Hoses and Piping
52
Noise
52
Handling Accumulator and Gas Spring
53
Precautions with Compressed Air
53
Maintenance of Air Conditioner
53
Disposing of Waste Materials
53
Method of Selecting Window Washer Fluid
53
Periodic Replacement of Safety Critical Parts
54
Handling Tires
55
Operation
55
Tires
55
Precautions When Storing Tires
56
General View
59
General View of Machine
59
General View of Controls and Gauges
60
Explanation of Components
63
Machine Monitor
63
Switches
96
Control Levers, Pedals
110
Steering Tilt Lock Lever
115
Cap with Lock
115
Frame Lock Bar
117
Towing Pin
117
Grease Pump
118
Backup Alarm
123
Fuse
124
Slow Blow Fuse
125
Power Outlet
126
Am/Fm Radio
127
Am/Fm Radio-Cassette Stereo
133
Handling Auto Air Conditioner
141
Main Power Switch
142
Fan Switch
143
Air Conditioner Switch
144
Auto Switch
144
Temperature Control Switch
144
Air Conditioner
148
FRESH/RECIRC Selector Switch
152
Handling Cab Wiper
155
Check before Starting Engine, Adjust
156
Operation
156
Starting Engine
176
Checks after Starting Engine
180
Operations and Checks after Starting Engine
181
Stopping Engine
183
Moving the Machine (Directional, Speed), Stopping the Machine
184
Turning
193
Operation of Work Equipment
196
Work Possible Using Wheel Loader
198
Precautions for Operation
205
Adjusting Work Equipment Posture
207
Parking Machine
209
Checks after Completion of Operation
211
Locking
212
Handling the Tires
213
Loading, Unloading Work with Trailers
215
Transportation
215
Transportation Procedure
215
Lifting Machine
219
Cold Weather Operation
221
Precautions for Low Temperature
221
After Cold Weather
222
Precautions after Completion of Work
222
After Storage
223
Before Storage
223
During Storage
223
Long-Term Storage
223
Method of Towing Machine
224
Troubleshooting
224
When Machine Runs out of Fuel
224
If Battery Is Discharged
229
Other Trouble
232
Guides to Maintenance
239
Maintenance
239
Handling Oil, Fuel, Coolant, and Performing Oil Clinic
241
Outlines of Service
241
Outline of Electric System
244
Wear Parts
245
Wear Parts List
245
Recommended Fuel, Coolant, and Lubricant
246
Use of Fuel, Coolant and Lubricants According to Ambient Temperature
247
Recommended Brands, Recommended Quality for Products Other than Komatsu Genuine Oil
248
Standard Tightening Torques for Bolts and Nuts
249
Torque List
249
Periodic Replacement of Safety Critical Parts
250
Maintenance Schedule Chart
252
Change Transmission Oil Filter Cartridge
254
Check Engine Valve Clearance, Adjust
254
Initial 10 Hours Service (Service for First 50 Hours on New Machine)
254
Initial 1000 Hours Service
254
Initial 1000 Hours Service (Only after the First 1000 Hours)
254
Initial 250 Hours Service
254
Initial 250 Hours Service (Only after the First 250 Hours)
254
Lubricating
254
Replace Hydraulic Tank Filter Element
254
Service Procedure
254
Clean, Replace Air Cleaner Element
255
When Required
255
Clean Inside of Cooling System
258
Check Transmission Oil Level, Add Oil
261
Check Axle Oil Level, Add Oil
262
Clean Air Conditioner Condenser
263
Clean Axle Case Breather
263
Check Window Washing Fluid Level, Add Fluid
264
Clean Radiator Fins and Cooler Fins
264
Turn, Replace Bolt-On Cutting Edge
268
Replace Bucket Teeth
269
Check Air Conditioner
270
Replace Slow Blow Fuse
271
Checking Function of Accumulator
272
Selection and Inspection of Tires
273
Check before Starting
275
Drain Water, Sediment from Fuel Tank
276
Every 50 Hours Service
276
Check Oil Level in Hydraulic Tank, Add Oil
277
Every 100 Hours Service
277
Lubricate Rear Axle Pivot Pin
277
Clean Element in Air Conditioner Fresh Air Filter
278
Check Battery Electrolyte Level
279
Every 250 Hours Service
279
Check Parking Brake
280
Check Air Conditioner Compressor Belt Tension, Adjust
281
Check for Loose Wheel Hub Bolts, Tighten
282
Clean Element in Air Conditioner Recirculation Filter
282
Checking Function of Accumulator
283
Lubricating
284
Change Oil in Engine Oil Pan, Replace Engine Oil Filter Cartridge
285
Every 500 Hours Service
285
Replace Fuel Pre-Filter Cartridge
286
Every 1000 Hours Service
289
Replace Fuel Main Filter Cartridge
289
Change Oil in Transmission Case and Transmission Oil Filter Cartridge, Clean Strainer
291
Clean Transmission Case Breather
292
Lubricating
292
Check Alternator Driving Belt Tension and Replacement
293
Check of Engine Air Intake Piping Clamps for Looseness
293
Change Oil in Hydraulic Tank, Replace Hydraulic Filter Element
294
Every 2000 Hours Service
294
Replace Hydraulic Tank Breather Element
296
Change Axle Oil
297
Replace Element in Air Conditioner Recirculation Air Filter, Fresh Air Filter
297
Check Brake Disc Wear
298
Check Alternator
299
Check Engine Valve Clearance, Adjust
299
Check Vibration Damper
299
Checking Function of Accumulator
299
Every 4000 Hours Service
300
Lubricating
300
Check Air Conditioner Compressor, Adjust
301
Check Starting Motor
301
Check Water Pump
301
Check for Loose Engine High-Pressure Piping Clamps, Hardening of Rubber
302
Checking for Missing Fuel Spray Prevention Cap, Hardening of Rubber
302
Every 8000 Hours Service
303
Replace Fuel Spray Prevention Cap
303
Replace High-Pressure Piping Clamp
303
Specifications
305
Attachments, Options
309
Selecting Bucket and Tires
309
General Locations
310
Handling Torque Converter Lock-Up
310
Method of Operation
312
Warning/Limit Functions for Travel Speed
313
Explanation of Components
314
Handling Joystick Steering System
314
Structure and Function of Joystick Steering
318
Getting in or out of Operator's Cab
319
Seat Adjustment
320
Adjustment of Joystick Console
322
Operation Using Joystick Lever and Operation Using Steering Wheel
323
Operation Method of Joystick Steering System
324
Precautions for Steering with Joystick
324
Explanation of Components
327
Handling Multi Function Mono-Lever
327
Using Fnr Switch to Change between Forward and Reverse
332
Basic Precautions
334
Handling Machines Equipped with Komtrax
334
Index
336
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Komatsu WA380-6 Specifications
General
Brand
Komatsu
Model
WA380-6
Category
Compact Loader
Language
English
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