Hyundai HX300 L User manual

CONTENTS
CONTENTS
SECTION 1 GENERAL
SECTION 1 GENERAL
Group 1 Safety Hints ------------------------------------------------------------------------------------------------------ 1-1
Group 2 Specifications --------------------------------------------------------------------------------------------------- 1-10
SECTION 2 STRUCTURE AND FUNCTION
SECTION 2 STRUCTURE AND FUNCTION
Group 1 Pump Device ---------------------------------------------------------------------------------------------------- 2-1
Group 2 Main Control Valve ------------------------------------------------------------------------------------------- 2-20
Group 3 Swing Device ---------------------------------------------------------------------------------------------------- 2-60
Group 4 Travel Device ---------------------------------------------------------------------------------------------------- 2-71
Group 5 RCV Lever -------------------------------------------------------------------------------------------------------- 2-85
Group 6 RCV Pedal -------------------------------------------------------------------------------------------------------- 2-92
SECTION 3 HYDRAULIC SYSTEM
SECTION 3 HYDRAULIC SYSTEM
Group 1 Hydraulic Circuit ----------------------------------------------------------------------------------------------- 3-1
Group 2 Main Circuit ------------------------------------------------------------------------------------------------------- 3-2
Group 3 Pilot Circuit -------------------------------------------------------------------------------------------------------- 3-5
Group 4 Single Operation ---------------------------------------------------------------------------------------------- 3-14
Group 5 Combined Operation --------------------------------------------------------------------------------------- 3-24
SECTION 4 ELECTRICAL SYSTEM
SECTION 4 ELECTRICAL SYSTEM
Group 1 Component Location --------------------------------------------------------------------------------------- 4-1
Group 2 Electric Circuit -------------------------------------------------------------------------------------------------- 4-3
Group 3 Electrical Component Specification --------------------------------------------------------------- 4-23
Group 4 Connectors ------------------------------------------------------------------------------------------------------- 4-32
SECTION 5 MECHATRONICS SYSTEM
SECTION 5 MECHATRONICS SYSTEM
Group 1 Outline --------------------------------------------------------------------------------------------------------------- 5-1
Group 2 Mode selection System ----------------------------------------------------------------------------------- 5-3
Group 3 Automatic Deceleration System --------------------------------------------------------------------- 5-6
Group 4 Power Boost System
--------------------------------------------------------------------------------------- 5-7
Group 5 Travel Speed Control System ------------------------------------------------------------------------- 5-8
Group 6 Automatic Warming Up Function -------------------------------------------------------------------- 5-9
Group 7 Engine Overheat Prevention Function ----------------------------------------------------------- 5-10
Group 8 Variable Power Control System ---------------------------------------------------------------------- 5-11

Group 9 Attachment Flow Control System ------------------------------------------------------------------- 5-12
Group 10 Boom Floating Control System ---------------------------------------------------------------------- 5-13
Group 11 Intelligent Power Control System ------------------------------------------------------------------- 5-14
Group 12 Anti-Restart System ----------------------------------------------------------------------------------------- 5-16
Group 13 Self-Diagnostic System ----------------------------------------------------------------------------------- 5-17
Group 14 Engine Control System ----------------------------------------------------------------------------------- 5-53
Group 15 EPPR (Electro Proportional Pressure Reducing) Valve ------------------------------ 5-54
Group 16 Monitoring System ------------------------------------------------------------------------------------------- 5-59
Group 17 Fuel Warmer System --------------------------------------------------------------------------------------- 5-94
SECTION 6 TROUBLESHOOTING
SECTION 6 TROUBLESHOOTING
Group 1 Before Troubleshooting ------------------------------------------------------------------------------------ 6-1
Group 2 Hydraulic and Mechanical System ----------------------------------------------------------------- 6-4
Group 3 Electrical System --------------------------------------------------------------------------------------------- 6-24
Group 4 Mechatronics System -------------------------------------------------------------------------------------- 6-40
SECTION 7 MAINTENANCE STANDARD
SECTION 7 MAINTENANCE STANDARD
Group 1 Operational Performance Test ------------------------------------------------------------------------ 7-1
Group 2 Major Components ------------------------------------------------------------------------------------------ 7-21
Group 3 Track and Work Equipment ----------------------------------------------------------------------------- 7-32
SECTION 8 DISASSEMBLY AND ASSEMBLY
SECTION 8 DISASSEMBLY AND ASSEMBLY
Group 1 Precaution --------------------------------------------------------------------------------------------------------- 8-1
Group 2 Tightening Torque --------------------------------------------------------------------------------------------- 8-4
Group 3 Pump Device ---------------------------------------------------------------------------------------------------- 8-7
Group 4 Main Control Valve ------------------------------------------------------------------------------------------- 8-30
Group 5 Swing Device ---------------------------------------------------------------------------------------------------- 8-56
Group 6 Travel Device ---------------------------------------------------------------------------------------------------- 8-80
Group 7 RCV Lever -------------------------------------------------------------------------------------------------------- 8-113
Group 8 Turning Joint ----------------------------------------------------------------------------------------------------- 8-127
Group 9 Boom, Arm and Bucket Cylinder -------------------------------------------------------------------- 8-132
Group 10 Undercarriage -------------------------------------------------------------------------------------------------- 8-149
Group 11 Work Equipment ---------------------------------------------------------------------------------------------- 8-161

SECTION 9 COMPONENT MOUNTING TORQUE
SECTION 9 COMPONENT MOUNTING TORQUE
Group 1 Introduction guide -------------------------------------------------------------------------------------------- 9-1
Group 2 Engine system ------------------------------------------------------------------------------------------------- 9-2
Group 3 Electric system ------------------------------------------------------------------------------------------------- 9-4
Group 4 Hydraulic system --------------------------------------------------------------------------------------------- 9-6
Group 5 Undercarriage -------------------------------------------------------------------------------------------------- 9-9
Group 6 Structure ----------------------------------------------------------------------------------------------------------- 9-10
Group 7 Work equipment ----------------------------------------------------------------------------------------------- 9-15

0-1
FOREWORD
FOREWORD
1. STRUCTURE
1. STRUCTURE
This service manual has been prepared as an aid to improve the quality of repairs by giving the
serviceman an accurate understanding of the product and by showing him the correct way to
perform repairs and make judgements. Make sure you understand the contents of this manual and
use it to full effect at every opportunity.
This service manual mainly contains the necessary technical information for operations performed in
a service workshop.
For ease of understanding, the manual is divided into the following sections.
SECTION 1 GENERAL
SECTION 1 GENERAL
This section explains the safety hints and gives the specification of the machine and major
components.
SECTION 2 STRUCTURE AND FUNCTION
SECTION 2 STRUCTURE AND FUNCTION
This section explains the structure and function of each component. It serves not only to give an
understanding of the structure, but also serves as reference material for troubleshooting.
SECTION 3 HYDRAULIC SYSTEM
SECTION 3 HYDRAULIC SYSTEM
This section explains the hydraulic circuit, single and combined operation.
SECTION 4 ELECTRICAL SYSTEM
SECTION 4 ELECTRICAL SYSTEM
This section explains the electrical circuit, monitoring system and each component. It serves not
only to give an understanding electrical system, but also serves as reference material for trouble
shooting.
SECTION 5 MECHATRONICS SYSTEM
SECTION 5 MECHATRONICS SYSTEM
This section explains the computer aided power optimization system and each component.
SECTION 6 TROUBLESHOOTING
SECTION 6 TROUBLESHOOTING
This section explains the troubleshooting charts correlating
problems
problems to
causes
causes.
SECTION 7 MAINTENANCE STANDARD
SECTION 7 MAINTENANCE STANDARD
This section gives the judgement standards when inspecting disassembled parts.
SECTION 8 DISASSEMBLY AND ASSEMBLY
SECTION 8 DISASSEMBLY AND ASSEMBLY
This section explains the order to be followed when removing, installing, disassembling or
assembling each component, as well as precautions to be taken for these operations.
SECTION 9 COMPONENT MOUNTING TORQUE
SECTION 9 COMPONENT MOUNTING TORQUE
This section shows bolt specifications and standard torque values needed when mounting
components to the machine.
The specifications contained in this shop manual are subject to change at any time and without any
advance notice. Contact your HYUNDAI distributor for the latest information.

0-2
Revised edition mark
Revised edition mark(①②③…)
When a manual is revised, an edition mark is
recorded on the bottom outside corner of the
pages.
Revisions
Revisions
Revised pages are shown at the list of revised
pages on the between the contents page and
section 1 page.
Symbols
Symbols
So that the shop manual can be of ample
practical use, important places for safety and
quality are marked with the following symbols.
2. HOW TO READ THE SERVICE MANUAL
2. HOW TO READ THE SERVICE MANUAL
Distribution and updating
Distribution and updating
Any additions, amendments or other changes will
be sent to HYUNDAI distributors.
Get the most up-to-date information before you
start any work.
Filing method
Filing method
See the page number on the bottom of the
page.
File the pages in correct order.
Following examples shows how to read the
page number.
Example 1
2 - 3
Item number(2. Structure and
Function)
Consecutive page number for
each item.
Additional pages : Additional pages are
indicated by a hyphen(-) and number after the
page number. File as in the example.
1.
2.
3.
Symbol Item Remarks
Special safety precautions are
necessary when performing the
work.
Extra special safety precautions
are necessary when performing
the work because it is under
internal pressure.
Special technical precautions or
other precautions for preserving
standards are necessary when
performing the work.
Safety
Caution
※
10 - 4
10 - 4 - 1
10 - 4 - 2
10 - 5
Added pages

0-3
3. CONVERSION TABLE
3. CONVERSION TABLE
Method of using the Conversion Table
The Conversion Table in this section is provided to enable simple conversion of figures. For details of
the method of using the Conversion Table, see the example given below.
Example
Example
Method of using the Conversion Table to convert from millimeters to inches
Method of using the Conversion Table to convert from millimeters to inches
Convert 55
mm into inches.
Locate the number 50
in the vertical column at the left side, take this as ⓐ , then draw a
horizontal line from
ⓐ .
Locate the number 5
in the row across the top, take this as ⓑ , then draw a perpendicular line
down from
ⓑ .
Take the point where the two lines cross as
ⓒ . This point ⓒ gives the value when converting
from millimeters to inches. Therefore, 55
mm = 2.165 inches.
Convert 550
mm into inches.
The number 550 does not appear in the table, so divide by 10(Move the decimal point one place
to the left) to convert it to 55
mm .
Carry out the same procedure as above to convert 55mm to 2.165 inches.
The original value(550
mm ) was divided by 10, so multiply 2.165 inches by 10(Move the decimal
point one place to the right) to return to the original value.
This gives 550
mm = 21.65 inches.
1.
1.
2.
(1)
(2)
(3)
(1)
(2)
(3)
Millimeters to inches
Millimeters to inches 1
mm = 0.03937 in
ⓑ
ⓐ
0 1 2 3 4 5 6 7 8 9
0 0.039 0.079 0.118 0.157 0.197 0.236 0.276 0.315 0.354
10 0.394 0.433 0.472 0.512 0.551 0.591 0.630 0.669 0.709 0.748
20 0.787 0.827 0.866 0.906 0.945 0.984 1.024 1.063 1.102 1.142
30 1.181 1.220 1.260 1.299 1.339 1.378 1.417 1.457 1.496 1.536
40 1.575 1.614 1.654 1.693 1.732 1.772 1.811 1.850 1.890 1.929
50 1.969 2.008 2.047 2.087 2.126 2.165 2.205 2.244 2.283 2.323
60 2.362 2.402 2.441 2.480 2.520 2.559 2.598 2.638 2.677 2.717
70 2.756 2.795 2.835 2.874 2.913 2.953 2.992 3.032 3.071 3.110
80 3.150 3.189 3.228 3.268 3.307 3.346 3.386 3.425 3.465 3.504
90 3.543 3.583 3.622 3.661 3.701 3.740 3.780 3.819 3.858 3.898
ⓒ

0-4
Millimeters to inches
Millimeters to inches 1
mm = 0.03937 in
0 1 2 3 4 5 6 7 8 9
0 0.039 0.079 0.118 0.157 0.197 0.236 0.276 0.315 0.354
10 0.394 0.433 0.472 0.512 0.551 0.591 0.630 0.669 0.709 0.748
20 0.787 0.827 0.866 0.906 0.945 0.984 1.024 1.063 1.102 1.142
30 1.181 1.220 1.260 1.299 1.339 1.378 1.417 1.457 1.496 1.536
40 1.575 1.614 1.654 1.693 1.732 1.772 1.811 1.850 1.890 1.929
50 1.969 2.008 2.047 2.087 2.126 2.165 2.205 2.244 2.283 2.323
60 2.362 2.402 2.441 2.480 2.520 2.559 2.598 2.638 2.677 2.717
70 2.756 2.795 2.835 2.874 2.913 2.953 2.992 3.032 3.071 3.110
80 3.150 3.189 3.228 3.268 3.307 3.346 3.386 3.425 3.465 3.504
90 3.543 3.583 3.622 3.661 3.701 3.740 3.780 3.819 3.858 3.898
Kilogram to Pound
Kilogram to Pound 1
kg = 2.2046 lb
0 1 2 3 4 5 6 7 8 9
0 2.20 4.41 6.61 8.82 11.02 13.23 15.43 17.64 19.84
10 22.05 24.25 26.46 28.66 30.86 33.07 35.27 37.48 39.68 41.89
20 44.09 46.30 48.50 50.71 51.91 55.12 57.32 59.5. 61.73 63.93
30 66.14 68.34 70.55 72.75 74.96 77.16 79.37 81.57 83.78 85.98
40 88.18 90.39 92.59 94.80 97.00 99.21 101.41 103.62 105.82 108.03
50 110.23 112.44 114.64 116.85 119.05 121.25 123.46 125.66 127.87 130.07
60 132.28 134.48 136.69 138.89 141.10 143.30 145.51 147.71 149.91 152.12
70 154.32 156.53 158.73 160.94 163.14 165.35 167.55 169.76 171.96 174.17
80 176.37 178.57 180.78 182.98 185.19 187.39 189.60 191.80 194.01 196.21
90 198.42 200.62 202.83 205.03 207.24 209.44 211.64 213.85 216.05 218.26

0-5
Liter to U.S. Gallon
Liter to U.S. Gallon 1ℓ= 0.2642 U.S.Gal
0 1 2 3 4 5 6 7 8 9
0 0.264 0.528 0.793 1.057 1.321 1.585 1.849 2.113 2.378
10 2.642 2.906 3.170 3.434 3.698 3.963 4.227 4.491 4.755 5.019
20 5.283 5.548 5.812 6.6076 6.340 6.604 6.869 7.133 7.397 7.661
30 7.925 8.189 8.454 8.718 8.982 9.246 9.510 9.774 10.039 10.303
40 10.567 10.831 11.095 11.359 11.624 11.888 12.152 12.416 12.680 12.944
50 13.209 13.473 13.737 14.001 14.265 14.529 14.795 15.058 15.322 15.586
60 15.850 16.115 16.379 16.643 16.907 17.171 17.435 17.700 17.964 18.228
70 18.492 18.756 19.020 19.285 19.549 19.813 20.077 20.341 20.605 20.870
80 21.134 21.398 21.662 21.926 22.190 22.455 22.719 22.983 23.247 23.511
90 23.775 24.040 24.304 24.568 24.832 25.096 25.631 25.625 25.889 26.153
Liter to U.K. Gallon
Liter to U.K. Gallon 1ℓ= 0.21997 U.K.Gal
0 1 2 3 4 5 6 7 8 9
0 0.220 0.440 0.660 0.880 1.100 1.320 1.540 1.760 1.980
10 2.200 2.420 2.640 2.860 3.080 3.300 3.520 3.740 3.950 4.179
20 4.399 4.619 4.839 5.059 5.279 5.499 5.719 5.939 6.159 6.379
30 6.599 6.819 7.039 7.259 7.479 7.969 7.919 8.139 8.359 8.579
40 8.799 9.019 9.239 9.459 9.679 9.899 10.119 10.339 10.559 10.778
50 10.998 11.281 11.438 11.658 11.878 12.098 12.318 12.528 12.758 12.978
60 13.198 13.418 13.638 13.858 14.078 14.298 14.518 14.738 14.958 15.178
70 15.398 15.618 15.838 16.058 16.278 16.498 16.718 16.938 17.158 17.378
80 17.598 17.818 18.037 18.257 18.477 18.697 18.917 19.137 19.357 19.577
90 19.797 20.017 20.237 20.457 20.677 20.897 21.117 21.337 21.557 21.777

0-6
kgf
kgf
·m to
to
lbf
lbf
·ft
ft
1 kgf·m = 7.233 lbf·ft
0 1 2 3 4 5 6 7 8 9
7.2 14.5 21.7 28.9 36.2 43.4 50.6 57.9 65.1
10 72.3 79.6 86.8 94.0 101.3 108.5 115.7 123.0 130.2 137.4
20 144.7 151.9 159.1 166.4 173.6 180.8 188.1 195.3 202.5 209.8
30 217.0 224.2 231.5 238.7 245.9 253.2 260.4 267.6 274.9 282.1
40 289.3 396.6 303.8 311.0 318.3 325.5 332.7 340.0 347.2 354.4
50 361.7 368.9 376.1 383.4 390.6 397.8 405.1 412.3 419.5 426.8
60 434.0 441.2 448.5 455.7 462.9 470.2 477.4 484.6 491.8 499.1
70 506.3 513.5 520.8 528.0 535.2 542.5 549.7 556.9 564.2 571.4
80 578.6 585.9 593.1 600.3 607.6 614.8 622.0 629.3 636.5 643.7
90 651.0 658.2 665.4 672.7 679.9 687.1 694.4 701.6 708.8 716.1
100 723.3 730.5 737.8 745.0 752.2 759.5 766.7 773.9 781.2 788.4
110 795.6 802.9 810.1 817.3 824.6 831.8 839.0 846.3 853.5 860.7
120 868.0 875.2 882.4 889.7 896.9 904.1 911.4 918.6 925.8 933.1
130 940.3 947.5 954.8 962.0 969.2 976.5 983.7 990.9 998.2 10005.4
140 1012.6 1019.9 1027.1 1034.3 1041.5 1048.8 1056.0 1063.2 1070.5 1077.7
150 1084.9 1092.2 1099.4 1106.6 1113.9 1121.1 1128.3 1135.6 1142.8 1150.0
160 1157.3 1164.5 1171.7 1179.0 1186.2 1193.4 1200.7 1207.9 1215.1 1222.4
170 1129.6 1236.8 1244.1 1251.3 1258.5 1265.8 1273.0 1280.1 1287.5 1294.7
180 1301.9 1309.2 1316.4 1323.6 1330.9 1338.1 1345.3 1352.6 1359.8 1367.0
190 1374.3 1381.5 1388.7 1396.0 1403.2 1410.4 1417.7 1424.9 1432.1 1439.4

0-7
kgf/cm
kgf/cm
2
to
to
lbf/in
lbf/in
2
1 kgf / cm2 = 14.2233 lbf / in
2
0 1 2 3 4 5 6 7 8 9
14.2 28.4 42.7 56.9 71.1 85.3 99.6 113.8 128.0
10 142.2 156.5 170.7 184.9 199.1 213.4 227.6 241.8 256.0 270.2
20 284.5 298.7 312.9 327.1 341.4 355.6 369.8 384.0 398.3 412.5
30 426.7 440.9 455.1 469.4 483.6 497.8 512.0 526.3 540.5 554.7
40 568.9 583.2 597.4 611.6 625.8 640.1 654.3 668.5 682.7 696.9
50 711.2 725.4 739.6 753.8 768.1 782.3 796.5 810.7 825.0 839.2
60 853.4 867.6 881.8 896.1 910.3 924.5 938.7 953.0 967.2 981.4
70 995.6 1010 1024 1038 1053 1067 1081 1095 1109 1124
80 1138 1152 1166 1181 1195 1209 1223 1237 1252 1266
90 1280 1294 1309 1323 1337 1351 1365 1380 1394 1408
100 1422 1437 1451 1465 1479 1493 1508 1522 1536 1550
110 1565 1579 1593 1607 1621 1636 1650 1664 1678 1693
120 1707 1721 1735 1749 1764 1778 1792 1806 1821 1835
130 1849 2863 1877 1892 1906 1920 1934 1949 1963 1977
140 1991 2005 2020 2034 2048 2062 2077 2091 2105 2119
150 2134 2148 2162 2176 2190 2205 2219 2233 2247 2262
160 2276 2290 2304 2318 2333 2347 2361 2375 2389 2404
170 2418 2432 2446 2460 2475 2489 2503 2518 2532 2546
180 2560 2574 2589 5603 2617 2631 2646 2660 2674 2688
200 2845 2859 2873 2887 2901 2916 2930 2944 2958 2973
210 2987 3001 3015 3030 3044 3058 3072 3086 3101 3115
220 3129 3143 3158 3172 3186 3200 3214 3229 3243 3257
230 3271 3286 3300 3314 3328 3343 3357 3371 3385 3399
240 3414 3428 3442 3456 3470 3485 3499 3513 3527 3542

0-8
TEMPERATURE
TEMPERATURE
Fahrenheit-Centigrade Conversion.
A simple way to convert a fahrenheit temperature reading into a centigrade temperature reading or vice verse
is to enter the accompanying table in the center or boldface column of figures.
These figures refer to the temperature in either Fahrenheit or Centigrade degrees.
If it is desired to convert from Fahrenheit to Centigrade degrees, consider the center column as a table of
Fahrenheit temperatures and read the corresponding Centigrade temperature in the column at the left.
If it is desired to convert from Centigrade to Fahrenheit degrees, consider the center column as a table of
Centigrade values, and read the corresponding Fahrenheit temperature on the right.
˚ C ˚ F ˚ C ˚ F ˚ C ˚ F ˚ C ˚ F
-40.4 -40 -40.0 -11.7 11 51.8 7.8 46 114.8 27.2 81 117.8
-37.2 -35 -31.0 -11.1 12 53.6 8.3 47 116.6 27.8 82 179.6
-34.4 -30 -22.0 -10.6 13 55.4 8.9 48 118.4 28.3 83 181.4
-31.7 -25 -13.0 -10.0 14 57.2 9.4 49 120.2 28.9 84 183.2
-28.9 -20 -4.0 -9.4 15 59.0 10.0 50 122.0 29.4 85 185.0
-28.3 -19 -2.2 -8.9 16 60.8 10.6 51 123.8 30.0 86 186.8
-27.8 -18 -0.4 -8.3 17 62.6 11.1 52 125.6 30.6 87 188.6
-27.2 -17 1.4 -7.8 18 64.4 11.7 53 127.4 31.1 88 190.4
-26.7 -16 3.2 -6.7 20 68.0 12.8 55 131.0 32.2 90 194.0
-26.1 -15 5.0 -6.7 20 68.0 12.8 55 131.0 32.2 90 194.0
-25.6 -14 6.8 -6.1 21 69.8 13.3 56 132.8 32.8 91 195.8
-25.0 -13 8.6 -5.6 22 71.6 13.9 57 134.6 33.3 92 197.6
-24.4 -12 10.4 -5.0 23 73.4 14.4 58 136.4 33.9 93 199.4
-23.9 -11 12.2 -4.4 24 75.2 15.0 59 138.2 34.4 94 201.2
-23.3 -10 14.0 -3.9 25 77.0 15.6 60 140.0 35.0 95 203.0
-22.8 -9 15.8 -3.3 26 78.8 16.1 61 141.8 35.6 96 204.8
-22.2 -8 17.6 -2.8 27 80.6 16.7 62 143.6 36.1 97 206.6
-21.7 -7 19.4 -2.2 28 82.4 17.2 63 145.4 36.7 98 208.4
-21.1 -6 21.2 -1.7 29 84.2 17.8 64 147.2 37.2 99 210.2
-20.6 -5 23.0 -1.1 35 95.0 21.1 70 158.0 51.7 125 257.0
-20.0 -4 24.8 -0.6 31 87.8 18.9 66 150.8 40.6 105 221.0
-19.4 -3 26.6 0 32 89.6 19.4 67 152.6 43.3 110 230.0
-18.9 -2 28.4 0.6 33 91.4 20.0 68 154.4 46.1 115 239.0
-18.3 -1 30.2 1.1 34 93.2 20.6 69 156.2 48.9 120 248.0
-17.8 0 32.0 1.7 35 95.0 21.1 70 158.0 51.7 125 257.0
-17.2 1 33.8 2.2 36 96.8 21.7 71 159.8 54.4 130 266.0
-16.7 2 35.6 2.8 37 98.6 22.2 72 161.6 57.2 135 275.0
-16.1 3 37.4 3.3 38 100.4 22.8 73 163.4 60.0 140 284.0
-15.6 4 39.2 3.9 39 102.2 23.3 74 165.2 62.7 145 293.0
-15.0 5 41.0 4.4 40 104.0 23.9 75 167.0 65.6 150 302.0
-14.4 6 42.8 5.0 41 105.8 24.4 76 168.8 68.3 155 311.0
-13.9 7 44.6 5.6 42 107.6 25.0 77 170.6 71.1 160 320.0
-13.3 8 46.4 6.1 43 109.4 25.6 78 172.4 73.9 165 329.0
-12.8 9 48.2 6.7 44 111.2 26.1 79 174.2 76.7 170 338.0
-12.2 10 50.0 7.2 45 113.0 26.7 80 176.0 79.4 172 347.0

SECTION 1 GENERAL
SECTION 1 GENERAL
Group 1 Safety Hints -------------------------------------------------------------------------------------------------------- 1-1
Group 2 Specifications ----------------------------------------------------------------------------------------------------- 1-10

FOLLOW SAFE PROCEDURE
FOLLOW SAFE PROCEDURE
Unsafe work practices are dangerous.
Understand service procedure before doing
work; Do not attempt shortcuts.
WEAR PROTECTIVE CLOTHING
WEAR PROTECTIVE CLOTHING
Wear close fitting clothing and safety equipment
appropriate to the job.
WARN OTHERS OF SERVICE WORK
WARN OTHERS OF SERVICE WORK
Unexpected machine movement can cause
serious injury.
Before performing any work on the excavator,
attach a
「
Do Not Operate
Do Not Operate 」 tag on the right
side control lever.
USE HANDHOLDS AND STEPS
USE HANDHOLDS AND STEPS
Falling is one of the major causes of personal
injury.
When you get on and off the machine, always
maintain a three point contact with the steps
and handrails and face the machine. Do not
use any controls as handholds.
Never jump on or off the machine. Never mount
or dismount a moving machine.
Be careful of slippery conditions on platforms,
steps, and handrails when leaving the machine.
SECTION 1 GENERAL
SECTION 1 GENERAL
GROUP 1 SAFETY
GROUP 1 SAFETY
1-1
13031GE01
13031GE02
13031GE03

PREPARE FOR EMERGENCIES
PREPARE FOR EMERGENCIES
Be prepared if a fire starts.
Keep a first aid kit and fire extinguisher handy.
Keep emergency numbers for doctors,
ambulance service, hospital, and fire
department near your telephone.
PROTECT AGAINST FLYING DEBRIS
PROTECT AGAINST FLYING DEBRIS
Guard against injury from flying pieces of metal
or debris; Wear goggles or safety glasses.
PROTECT AGAINST NOISE
PROTECT AGAINST NOISE
Prolonged exposure to loud noise can cause
impairment or loss of hearing.
Wear a suitable hearing protective device such
as earmuffs or earplugs to protect against
objectionable or uncomfortable loud noises.
AVOID POWER LINES
AVOID POWER LINES
Serious injury or death can result from contact
with electric lines.
Never move any part of the machine or load
closer to electric line than 3m(10ft) plus twice
the line insulator length.
1-2
13031GE04
13031GE05
13031GE06
13031GE07

KEEP RIDERS OFF EXCAVATOR
KEEP RIDERS OFF EXCAVATOR
Only allow the operator on the excavator. Keep
riders off.
Riders on excavator are subject to injury such
as being struck by foreign objects and being
thrown off the excavator. Riders also obstruct
the operator's view resulting in the excavator
being operated in an unsafe manner.
MOVE AND OPERATE MACHINE SAFELY
MOVE AND OPERATE MACHINE SAFELY
Bystanders can be run over. Know the location
of bystanders before moving, swinging, or
operating the machine.
Always keep the travel alarm in working
condition. It warns people when the excavator
starts to move.
Use a signal person when moving, swinging, or
operating the machine in congested areas.
Coordinate hand signals before starting the
excavator.
OPERATE ONLY FORM OPERATOR'S SEAT
OPERATE ONLY FORM OPERATOR'S SEAT
Avoid possible injury machine damage. Do not
start engine by shorting across starter
terminals.
NEVER start engine while standing on ground.
Start engine only from operator's seat.
PARK MACHINE SAFELY
PARK MACHINE SAFELY
Before working on the machine:
· Park machine on a level surface.
· Lower bucket to the ground.
· Turn auto idle switch off.
· Run engine at 1/2 speed without load for 2 minutes.
· Turn key switch to OFF to stop engine. Remove key
from switch.
· Move pilot control shutoff lever to locked position.
· Allow engine to cool.
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SUPPORT MACHINE PROPERLY
SUPPORT MACHINE PROPERLY
Always lower the attachment or implement to
the ground before you work on the machine. If
you must work on a lifted machine or
attachment, securely support the machine or
attachment.
Do not support the machine on cinder blocks,
hollow tiles, or props that may crumble under
continuous load.
Do not work under a machine that is supported
solely by a jack. Follow recommended
procedures in this manual.
SERVICE COOLING SYSTEM SAFELY
SERVICE COOLING SYSTEM SAFELY
Explosive release of fluids from pressurized
cooling system can cause serious burns.
Shut off engine. Only remove filler cap when
cool enough to touch with bare hands.
HANDLE FLUIDS SAFELY-AVOID FIRES
HANDLE FLUIDS SAFELY-AVOID FIRES
Handle fuel with care; It is highly flammable.
Do not refuel the machine while smoking or
when near open flame or sparks. Always stop
engine before refueling machine.
Fill fuel tank outdoors.
Store flammable fluids away from fire hazards.
Do not incinerate or puncture pressurized
containers.
Make sure machine is clean of trash,
grease, and debris.
Do not store oily rags; They can ignite and
burn spontaneously.
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BEWARE OF EXHAUST FUMES
BEWARE OF EXHAUST FUMES
Prevent asphyxiation. Engine exhaust fumes
can cause sickness or death.
If you must operate in a building, be positive
there is adequate ventilation. Either use an
exhaust pipe extension to remove the exhaust
fumes or open doors and windows to bring
enough outside air into the area.
REMOVE PAINT BEFORE WELDING OR
REMOVE PAINT BEFORE WELDING OR
HEATING
HEATING
Avoid potentially toxic fumes and dust.
Hazardous fumes can be generated when paint
is heated by welding, soldering, or using a torch.
Do all work outside or in a well ventilated area.
Dispose of paint and solvent properly.
Remove paint before welding or heating:
· If you sand or grind paint, avoid breathing the
dust.
Wear an approved respirator.
· If you use solvent or paint stripper, remove
stripper with soap and water before welding.
Remove solvent or paint stripper containers
and other flammable material from area.
Allow fumes to disperse at least 15 minutes
before welding or heating.
ILLUMINATE WORK AREA SAFELY
ILLUMINATE WORK AREA SAFELY
Illuminate your work area adequately but safely.
Use a portable safety light for working inside or
under the machine. Make sure the bulb is
enclosed by a wire cage. The hot filament of
an accidentally broken bulb can ignite spilled
fuel or oil.
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SERVICE MACHINE SAFELY
SERVICE MACHINE SAFELY
Tie long hair behind your head. Do not wear a
necktie, scarf, loose clothing or necklace when
you work near machine tools or moving parts.
If these items were to get caught, severe injury
could result.
Remove rings and other jewelry to prevent
electrical shorts and entanglement in moving
parts.
STAY CLEAR OF MOVING PARTS
STAY CLEAR OF MOVING PARTS
Entanglements in moving parts can cause
serious injury.
To prevent accidents, use care when working
around rotating parts.
AVOID HIGH PRESSURE FLUIDS
AVOID HIGH PRESSURE FLUIDS
Escaping fluid under pressure can penetrate the
skin causing serious injury.
Avoid the hazard by relieving pressure before
disconnecting hydraulic or other lines. Tighten
all connections before applying pressure.
Search for leaks with a piece of cardboard.
Protect hands and body from high pressure
fluids.
If an accident occurs, see a doctor immediately.
Any fluid injected into the skin must be
surgically removed within a few hours or
gangrene may result.
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AVOID HEATING NEAR PRESSURIZED
AVOID HEATING NEAR PRESSURIZED
FLUID LINES
FLUID LINES
Flammable spray can be generated by heating
near pressurized fluid lines, resulting in severe
burns to yourself and bystanders. Do not heat
by welding, soldering, or using a torch near
pressurized fluid lines or other flammable
materials.
Pressurized lines can be accidentally cut when
heat goes beyond the immediate flame area.
Install fire resisting guards to protect hoses or
other materials.
PREVENT BATTERY EXPLOSIONS
PREVENT BATTERY EXPLOSIONS
Keep sparks, lighted matches, and flame away
from the top of battery. Battery gas can
explode.
Never check battery charge by placing a metal
object across the posts. Use a volt-meter or
hydrometer.
Do not charge a frozen battery; It may explode.
Warm battery to 16
˚ C (60 ˚ F ).
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