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Compact Loader
WA320-5H
Komatsu WA320-5H Service Manual
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OPER
AT
ION
TRANS
POR
TA
TIO
N
3-105
LOCA
TION OF LIFTING POSITION MARK
3
Lifting ho
oks
(A) are lo
cate
d at 4 pla
ces on th
e mac
hine as
shown i
n the diagr
am on
the righ
t.
Use only th
ese 4 pla
ces when lifting; do
not use any othe
r
places
. Ther
e is a
serious
dang
er that
the m
achin
e will l
ose its
bala
nce.
WEIGHT T
A
BLE
3
Machin
e weigh
t
F
ront whe
el loa
d
Rear wheel
load
Center of g
ravity
W
A
320-
5H
13
660 kg
(301
20 lb)
6060 k
g (13362
lb)
7
600 kg
(16758 l
b)
1690 mm (5
ft 7 in)
163
165
Table of Contents
Table of Contents
11
Safety Information
5
Introduction
7
Intended Use
7
Directions of Machine
7
Necessary Information
8
Machine Serial No. Plate and Position
8
Engine Serial No. Plate and Position
8
Rops/Fops-Cab Serial No. Plate
9
Axle Serial No. Plate
9
Transmission Serial No. Plate
9
Seat Operator Serial No. Plate
9
Position of Service Meter
10
Table of Contents
11
Contents
12
Dimensions, Weights and Operating Data
18
Wa320-5H: Dimensions, Weights and Operating Data
18
Ce-Conforming Equipment
19
Manufacturer-Supplied Ce-Conforming Equipment, According to Document 421-93-H1900
20
Safety
24
Safety Labels
26
Location of Safety Labels
26
Presentation of Safety Labels
27
General Precautions
30
Precautions for Operation
40
Starting Engine
40
Operation
42
Transportation
48
Battery
49
Towing
51
Precautions for Maintenance
52
Precautions with Tires
59
Operation
60
General View
61
General View of Machine
61
General View of Controls and Gauges
62
Explanation of Components
64
Machine Monitor
64
Monitor System
65
Types of Warning
66
Central Warning Lamp
66
Character Display Portion
67
Emergency Stop Item
73
Caution Items
75
Warning/Limit Functions for Travel Speed
77
Inspection and Maintenance Item
78
Pilot Display Portion
81
Meter Display Portion
84
Other Functions of Machine Monitor
86
Switches
89
Control Levers, Pedals
98
Steering Tilt Lock Lever
102
Cap and Cover with Lock
102
Safety Bar
103
Towing Pin
104
Grease Pump
104
Cab Door Inner Lock
104
Cab Door Open Lock
105
Cab Window Open Lock Cancel Knob
105
Fuse
105
Fuse Capacity and Name of Circuit
106
Slow Blow Fuse
107
Power Outlet
107
Storage Box
107
Air Conditioner
108
General Locations and Function of Control Panel
108
Method of Operation
111
Precautions When Using
112
Handling Cab Wiper
112
Preventing Damage to Wiper Arm Bracket
112
Operation
113
Check before Starting Engine, Adjust
113
Walk-Around Check
113
Check before Starting
116
Adjustment
122
Operations and Checks before Starting Engine
127
Starting Engine
129
Normal Starting
129
Starting in Cold Weather
131
Operations and Checks after Starting Engine
133
Breaking-In the Machine
133
Normal Operation
134
Stopping Engine
135
Moving the Machine
136
Changing Direction
138
Stopping the Machine
140
Turning
141
Emergency Steering
142
Operation of Work Equipment
143
Work Possible Using Wheel Loader
145
Digging Operations
145
Leveling Operations
148
Pushing Operation
148
Load and Carry Operations
148
Loading Operations
149
Precautions for Operation
151
Permissible Water Depth
151
If Wheel Brake Does Not Work
151
Precautions When Driving up or down Slopes
151
Adjusting Work Equipment Posture
153
Adjusting Boom Kickout
153
Adjusting Bucket Positioner
154
Bucket Level Indicator
154
Parking Machine
155
Check after Stopping Engine
156
Checks after Completion of Operation
156
Locking
157
Handling the Tires
158
Precautions When Handling Tires
158
Tire Pressure
158
Precautions for Using Load and Carry Method
159
Transportation
160
Transportation Procedure
160
Loading, Unloading Work with Trailers
160
Loading
160
Securing Machine
161
Unloading
162
Lifting Machine
163
Location of Lifting Position Mark
164
Weight Table
164
Lifting Procedure
165
Cold Weather Operation
166
Precautions for Low Temperature
166
Fuel and Lubricants
166
Coolant
166
Battery
167
Precautions after Completion of Work
167
After Cold Weather
168
Warming-Up Operation for Steering Hydraulic Circuit in Cold Weather
168
Long-Term Storage
169
Before Storage
169
During Storage
169
After Storage
169
Troubleshooting
170
When Machine Runs out of Fuel
170
Towing the Machine
170
When Engine Can be Used
171
When Engine Cannot be Used
171
If Battery Is Discharged
172
Removal and Installation of Battery
172
Precautions for Charging Battery
173
Starting Engine with Booster Cable
174
Other Trouble
176
Electrical System
176
Chassis
177
Engine
179
Maintenance
182
Guides to Maintenance
183
Outlines of Service
185
HANDLING OIL, FUEL, COOLANT, GREASE and CARRYING out KOWA (Komatsu Oil Wear Analysis)4-4
185
Oil
185
Fuel
185
Coolant
186
Grease
186
CARRYING out KOWA (Komatsu Oil Wear Analysis)
186
Storing Oil and Fuel
187
Filters
187
Biodegradable Hydraulic Oil and Lubricants
188
Outline of Electric System
188
Wear Parts
189
Wear Parts List
189
Fuel, Coolant and Lubricants
190
Lubrication Chart
190
Proper Selection of Fuel, Coolant and Lubricants
191
Standard Tightening Torques for Bolts and Nuts
196
Torque List
196
Periodic Replacement of Safety Critical Parts
197
Maintenance Schedule Chart
198
Table of Contents
199
Service Procedure
200
Initial 250 Hours Service
200
When Required
201
Check, Clean, or Replace Air Cleaner Element
201
Dust Pre-Extractor "Turbo II": Check, Clean
203
Clean Inside of Cooling System
204
Check Oil Level in Transfer Case, Add Oil
207
Check Axle Oil Level, Add Oil
208
Clean Axle Case Breather
209
Clean Air Conditioner Condenser
210
Check Window Washing Fluid Level, Add Fluid
210
Clean Radiator Fins and Cooler Fins
211
Clean Transfer Oil Cooler Fins
212
Check Electrical Intake Air Heater
212
Replace Bolt on Cutting Edge
213
Replace Bucket Teeth
214
Check Air Conditioner
215
Replace Slow Blow Fuse
216
Selection and Inspection of Tires
217
Check before Starting
219
Every 50 Hours Service
220
Drain Water, Sediment from Fuel Tank
220
Every 100 Hours Service
221
Lubricate Rear Axle Pivot Pin
221
Clean Element in Air Conditioner Fresh Air Filter
221
Check Oil Level in Hydraulic Tank, Add Oil
222
Every 250 Hours Service
223
Check Battery Electrolyte Level
223
Check Parking Brake
225
Check Air Conditioner Compressor Belt Tension, Adjust
225
Check for Loose Wheel Hub Bolts, Tighten
226
Clean Element in Air Conditioner Recirculation Filter
227
Lubricating
227
Every 500 Hours Service
229
Change Oil in Engine Oil Pan, Replace Engine Oil Filter Cartridge
229
Replace Fuel Filter Cartridge
230
Clean Water Separator Strainer
231
Every 1000 Hours Service
232
Change Oil in Transfer Case
232
Clean Transfer Case Breather
233
Replace Hst Oil Filter Element
234
Lubricating
235
Check Tightening Parts of Turbocharger
235
Check Play of Turbocharger Rotor
235
Check Alternator Driving Belt Tension and Replacement
235
Every 2000 Hours Service
236
Change Oil in Hydraulic Tank, Replace Hydraulic Filter Element
236
Replace Hydraulic Tank Breather Element
237
Cleaning the Strainer of the Brake Filter
238
Change Axle Oil
239
Check Alternator, Starting Motor
240
Check Brake Disc Wear
240
Check Engine Valve Clearance, Adjust
240
Replace Element in Air Conditioner Recirculation Air Filter, Fresh Air Filter
240
Check Accumulator Gas Pressure
241
Check Vibration Damper
241
Every 4000 Hours Service
242
Clean and Check Turbocharger
241
Check Water Pump
242
Lubricating
242
5
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Komatsu WA320-5H Specifications
General
Brand
Komatsu
Model
WA320-5H
Category
Compact Loader
Language
English
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