Komatsu GALEO WA450-5L Install guide

September 2005 Copyright 2005 Komatsu
Printed in USA DataKom Publishing Division
00-1 f
CEBM009605
Shop
Manual
WA450-5L
WA480-5L
WHEEL LOADER
This material is proprietary to Komatsu America Corp. and is not to be reproduced, used, or disclosed except in accordance
with written authorization from Komatsu America Corp.
It is our policy to improve our products whenever it is possible and practical to do so. We reserve the right to make changes or
add improvements at any time without incurring any obligation to install such changes on products sold previously.
Due to this continuous program of research and development, periodic revisions may be made to this publication. It is recom-
mended that customers contact their distributor for information on the latest revision.
SERIAL NUMBERS WA450-5L A36001 and UP
WA480-5L A37001
WA450-5L WA480-5L

FOREWORD CONTENTS
00-2 eWA450-5L WA480-5L
12 CONTENTS 00
01 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-1
10 STRUCTURE AND FUNCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
20 TESTING, ADJUSTING AND TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-1
30 DISASSEMBLY AND ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-1
90 OTHER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90-1
Find manuals at https://best-manuals.com

FOREWORD
WA450-5L WA480-5L 00-2-1 5
The affected pages are indicated by using the following
marks. It is requested that necessary actions be taken to
these pages according to the table below.
Mark Indication Action
❍New page to be added Add
●Page to be replaced Replace
( ) Page to be deleted Discard
Mark Page Rev
●00-1 f
00-2 e
●00-2-1 f
●00-2-2 f
●00-2-3 f
●00-2-4 f
●00-2-5 f
●00-2-6 f
●00-2-7 f
●00-2-8 f
●00-2-9 f
●00-2-10 f
❍00-2-11 f
❍00-2-12 f
00-3
00-4
00-5
00-6
00-7
00-8 e
00-9 e
00-10 e
00-11 e
00-12 e
00-13 e
00-14 e
00-15 e
00-16 e
00-17 e
00-18 e
00-19 e
00-20 e
00-21 e
00-22 e
01-1 e
01-2 e
01-3 e
01-4 e
01-5 e
01-6 e
01-7 e
01-8 e
10-1 e
10-2 e
10-3 e
10-4 e
10-5 e
10-6 e
10-7 e
10-8 e
10-9 e
10-10 e
10-11 e
10-12 e
10-13 e
10-14 e
Mark Page Rev
10-15 e
10-16 e
10-17 e
10-18 e
10-19 e
10-20 e
10-21 e
10-22 e
10-23 e
10-24 e
10-25 e
10-26 e
10-27 e
10-28 e
10-29 e
10-30 e
10-31 e
10-32 e
10-33 e
10-34 e
10-35 e
10-36 e
10-37 e
10-38 e
10-39 e
10-40 e
10-41 e
10-42 e
10-43 e
Mark Page Rev
10-44 e
10-45 e
10-46 e
10-47 e
10-48 e
10-49 e
10-50 e
10-51 e
10-52 e
10-53 e
10-54 e
10-55 e
10-56 e
10-57 e
10-58 e
10-59 e
10-60 e
10-61 e
10-62 e
10-63 e
10-64 e
10-65 e
10-66 e
10-67 e
10-68 e
10-69 e
10-70 e
10-71 e
10-72 e
Mark Page Rev
WA450-5L WA480-5L
Find manuals at https://best-manuals.com

FOREWORD
00-2-2 5WA450-5L WA480-5L
10-73 e
10-74 e
10-75 e
10-76 e
10-77 e
10-78 e
10-79 e
10-80 e
10-81 e
10-82 e
10-83 e
10-84 e
10-85 e
10-86 e
10-87 e
10-88 e
10-89 e
10-90 e
10-91 e
10-92 e
10-93 e
10-94 e
10-95 e
10-96 e
10-97 e
10-98 e
10-99 e
10-100 e
10-101 e
10-102 e
10-103 e
10-104 e
10-105 e
Mark Page Rev
10-106 e
10-107 e
10-108 e
10-109 e
10-110 e
10-111 e
10-112 e
10-113 e
10-114 e
10-115 e
10-116 e
10-117 e
10-118 e
10-119 e
10-120 e
10-121 e
10-122 e
10-123 e
10-124 e
10-125 e
10-126 e
10-127 e
10-128 e
10-129 e
10-130 e
10-131 e
10-132 e
10-133 e
10-134 e
10-135 e
10-136 e
10-137 e
10-138 e
Mark Page Rev
10-139 e
10-140 e
10-141 e
10-142 e
10-143 e
10-144 e
10-145 e
10-146 e
10-147 e
10-148 e
10-149 e
10-150 e
10-151 e
10-152 e
10-153 e
10-154 e
10-155 e
10-156 e
10-157 e
10-158 e
10-159 e
10-160 e
10-161 e
10-162 e
10-163 e
10-164 e
10-165 e
10-166 e
10-167 e
10-168 e
10-169 e
10-170 e
10-171 e
Mark Page Rev
10-172 e
10-173 e
10-174 e
10-175 e
10-176 e
10-177 e
10-178 e
10-179 e
10-180 e
10-181 e
10-182 e
10-183 e
10-184 e
10-185 e
10-186 e
10-187 e
10-188 e
10-189 e
10-190 e
10-191 e
10-192 e
10-193 e
10-194 e
10-195 e
10-196 e
10-197 e
10-198 e
10-199 e
10-200 e
10-201 e
10-202 e
10-203 e
10-204 e
Mark Page Rev
Find manuals at https://best-manuals.com

FOREWORD
WA450-5L WA480-5L 00-2-3 5
10-205 e
10-206 e
10-207 e
10-208 e
10-209 e
10-210 e
10-211 e
10-212 e
10-213 e
10-214 e
10-215 e
10-216 e
10-217 e
10-218 e
10-219 e
10-220 e
10-221 e
10-222 e
10-223 e
10-224 e
10-225 e
10-226 e
10-227 e
10-228 e
10-229 e
10-230 e
10-231 e
10-232 e
10-233 e
10-234 e
10-235 e
10-236 e
10-237 e
Mark Page Rev
10-238 e
10-239 e
10-240 e
10-241 e
10-242 e
10-243 e
10-244 e
10-245 e
10-246 e
10-247 e
10-248 e
10-249 e
10-250 e
10-251 e
10-252 e
10-253 e
10-254 e
10-255 e
10-256 e
10-257 e
10-258 e
10-259 e
10-260 e
10-261 e
10-262 e
10-263 e
10-264 e
10-265 e
10-266 e
10-267 e
10-268 e
10-269 e
10-270 e
Mark Page Rev
10-271 e
10-272 e
10-273 e
10-274 e
10-275 e
10-276 e
10-277 e
10-278 e
10-279 e
10-280 e
10-281 e
10-282 e
10-283 e
10-284 e
10-285 e
10-286 e
10-287 e
10-288 e
10-289 e
10-290 e
10-291 e
10-292 e
10-293 e
10-294 e
10-295 e
10-296 e
10-297 e
10-298 e
10-299 e
10-300 e
10-301 e
10-302 e
10-303 e
Mark Page Rev
10-304 e
10-305 e
10-306 e
10-307 e
10-308 e
10-309 e
10-310 e
10-311 e
10-312 e
10-313 e
10-314 e
10-315 e
10-316 e
10-317 e
10-318 e
10-319 e
10-320 e
10-321 e
10-322 e
10-323 e
10-324 e
10-325 e
10-326 e
10-327 e
10-328 e
10-329 e
10-330 e
10-331 e
10-332 e
10-333 e
10-334 e
10-335 e
10-336 e
Mark Page Rev
Find manuals at https://best-manuals.com

FOREWORD
00-2-4 5WA450-5L WA480-5L
10-337 e
10-338 e
10-339 e
10-340 e
10-341 e
10-342 e
10-343 e
10-344 e
10-345 e
10-346 e
10-347 e
10-348 e
10-349 e
10-350 e
10-351 e
10-352 e
10-353 e
10-354 e
10-355 e
10-356 e
10-357 e
10-358 e
10-359 e
10-360 e
●20-1 f
●20-2 f
●20-3 f
●20-4 f
●20-5 f
●20-6 f
●20-7 f
●20-8 f
Mark Page Rev
●20-9 f
●20-10 f
●20-11 f
●20-12 f
●20-13 f
●20-14 f
●20-15 f
●20-16 f
●20-17 f
●20-18 f
●20-19 f
●20-20 f
●20-21 f
●20-22 f
●20-23 f
●20-24 f
●20-25 f
●20-26 f
●20-27 f
●20-28 f
●20-29 f
●20-30 f
●20-31 f
●20-32 f
●20-33 f
●20-34 f
●20-35 f
●20-36 f
●20-37 f
●20-38 f
●20-39 f
●20-40 f
●20-41 f
Mark Page Rev
●20-42 f
●20-43 f
●20-44 f
●20-45 f
●20-46 f
●20-47 f
●20-48 f
●20-49 f
●20-50 f
❍20-51 f
❍20-52 f
❍20-53 f
❍20-54 f
❍20-55 f
❍20-56 f
❍20-57 f
❍20-58 f
❍20-59 f
❍20-60 f
❍20-61 f
❍20-62 f
20-101 b
20-102 b
20-103 b
20-104 b
20-105 b
20-106 b
20-107 b
20-108 b
20-109 b
20-110 b
20-111 b
Mark Page Rev
20-112 b
20-113 b
20-114 b
●20-201 f
●20-202 f
●20-203 f
●20-204 f
●20-205 f
●20-206 f
●20-207 f
●20-208 f
●20-209 f
●20-210 f
●20-211 f
●20-212 f
●20-213 f
●20-214 f
●20-215 f
●20-216 f
●20-217 f
●20-218 f
●20-219 f
●20-220 f
●20-221 f
●20-222 f
●20-223 f
●20-224 f
●20-225 f
●20-226 f
●20-227 f
●20-228 f
●20-229 f
Mark Page Rev
Find manuals at https://best-manuals.com

FOREWORD
WA450-5L WA480-5L 00-2-5 5
●20-230 f
●20-231 f
●20-232 f
●20-233 f
●20-234 f
●20-235 f
●20-236 f
●20-237 f
●20-238 f
●20-239 f
●20-240 f
●20-241 f
●20-242 f
●20-243 f
●20-244 f
●20-245 f
●20-246 f
●20-247 f
●20-248 f
●20-249 f
●20-250 f
●20-251 f
●20-252 f
●20-253 f
●20-254 f
●20-255 f
●20-256 f
●20-257 f
●20-258 f
●20-259 f
●20-260 f
●20-261 f
●20-262 f
Mark Page Rev
❍20-263 f
❍20-264 f
❍20-265 f
❍20-266 f
❍20-267 f
❍20-268 f
●20-301 f
●20-302 f
●20-303 f
●20-304 f
●20-305 f
●20-306 f
●20-307 f
●20-308 f
●20-309 f
●20-310 f
●20-311 f
●20-312 f
●20-313 f
●20-314 f
●20-315 f
●20-316 f
●20-317 f
●20-318 f
●20-319 f
●20-320 f
●20-321 f
●20-322 f
●20-323 f
●20-324 f
●20-325 f
●20-326 f
Mark Page Rev
●20-327 f
●20-328 f
●20-329 f
●20-330 f
●20-331 f
●20-332 f
●20-333 f
●20-334 f
●20-335 f
●20-336 f
●20-337 f
●20-338 f
●20-339 f
●20-340 f
●20-341 f
●20-342 f
●20-343 f
●20-344 f
●20-345 f
●20-346 f
●20-347 f
●20-348 f
●20-349 f
●20-350 f
●20-351 f
●20-352 f
●20-353 f
●20-354 f
●20-355 f
●20-356 f
●20-357 f
●20-358 f
●20-359 f
Mark Page Rev
●20-360 f
●20-361 f
●20-362 f
●20-363 f
●20-364 f
●20-365 f
●20-366 f
●20-367 f
●20-368 f
●20-369 f
●20-370 f
●20-371 f
●20-372 f
●20-373 f
●20-374 f
●20-375 f
●20-376 f
●20-377 f
●20-378 f
●20-401 f
●20-402 f
●20-403 f
●20-404 f
●20-405 f
●20-406 f
●20-407 f
●20-408 f
●20-409 f
●20-410 f
●20-411 f
●20-412 f
●20-413 f
Mark Page Rev
Find manuals at https://best-manuals.com

FOREWORD
00-2-6 5WA450-5L WA480-5L
●20-414 f
●20-415 f
●20-416 f
●20-417 f
●20-418 f
●20-419 f
●20-420 f
●20-421 f
●20-422 f
●20-423 f
●20-424 f
●20-425 f
●20-426 f
●20-427 f
●20-428 f
●20-429 f
●20-430 f
●20-431 f
●20-432 f
●20-433 f
●20-434 f
●20-435 f
●20-436 f
●20-437 f
●20-438 f
●20-439 f
●20-440 f
●20-441 f
●20-442 f
●20-443 f
●20-444 f
●20-445 f
●20-446 f
Mark Page Rev
●20-447 f
●20-448 f
●20-449 f
●20-450 f
●20-451 f
●20-452 f
●20-453 f
●20-454 f
●20-455 f
●20-456 f
●20-457 f
●20-458 f
●20-459 f
●20-460 f
●20-461 f
●20-462 f
●20-463 f
●20-464 f
●20-465 f
●20-466 f
●20-467 f
●20-468 f
●20-469 f
●20-470 f
●20-471 f
●20-472 f
●20-473 f
●20-474 f
●20-475 f
●20-476 f
●20-477 f
●20-478 f
●20-479 f
Mark Page Rev
●20-480 f
●20-481 f
●20-482 f
●20-483 f
●20-484 f
●20-485 f
●20-486 f
●20-487 f
●20-488 f
●20-489 f
●20-490 f
●20-491 f
●20-492 f
●20-493 f
●20-494 f
●20-495 f
●20-496 f
●20-497 f
●20-498 f
●20-499 f
●20-500 f
●20-501 f
●20-502 f
●20-503 f
●20-504 f
●20-505 f
●20-506 f
●20-507 f
●20-508 f
●20-509 f
●20-510 f
●20-511 f
●20-512 f
Mark Page Rev
●20-513 f
●20-514 f
●20-515 f
●20-516 f
●20-517 f
●20-518 f
●20-519 f
●20-520 f
●20-521 f
●20-522 f
●20-523 f
●20-524 f
●20-525 f
●20-526 f
●20-527 f
●20-528 f
●20-529 f
●20-530 f
●20-531 f
●20-532 f
●20-533 f
●20-534 f
●20-535 f
●20-536 f
●20-537 f
●20-538 f
●20-539 f
●20-540 f
●20-541 f
●20-542 f
●20-543 f
●20-544 f
●20-545 f
Mark Page Rev
Find manuals at https://best-manuals.com

FOREWORD
WA450-5L WA480-5L 00-2-7 5
●20-546 f
●20-547 f
●20-548 f
●20-549 f
●20-550 f
●20-551 f
●20-552 f
●20-553 f
●20-554 f
●20-555 f
●20-556 f
●20-557 f
●20-558 f
●20-559 f
●20-560 f
❍20-601 f
❍20-602 f
❍20-603 f
❍20-604 f
❍20-605 f
❍20-606 f
❍20-607 f
❍20-608 f
❍20-609 f
❍20-610 f
❍20-611 f
❍20-612 f
❍20-613 f
❍20-614 f
❍20-615 f
❍20-616 f
❍20-617 f
Mark Page Rev
❍20-618 f
❍20-619 f
❍20-620 f
❍20-621 f
❍20-622 f
❍20-623 f
❍20-624 f
❍20-625 f
❍20-626 f
❍20-627 f
❍20-628 f
❍20-629 f
❍20-630 f
❍20-631 f
❍20-632 f
❍20-633 f
❍20-634 f
❍20-635 f
❍20-636 f
❍20-637 f
❍20-638 f
❍20-639 f
❍20-640 f
❍20-641 f
❍20-642 f
❍20-643 f
❍20-644 f
❍20-645 f
❍20-646 f
❍20-647 f
❍20-648 f
❍20-649 f
❍20-650 f
Mark Page Rev
❍20-651 f
❍20-652 f
❍20-653 f
❍20-654 f
❍20-655 f
❍20-656 f
❍20-657 f
❍20-658 f
❍20-659 f
❍20-660 f
❍20-661 f
❍20-662 f
❍20-663 f
❍20-664 f
❍20-665 f
❍20-666 f
❍20-667 f
❍20-668 f
❍20-669 f
❍20-670 f
❍20-671 f
❍20-672 f
❍20-673 f
❍20-674 f
❍20-675 f
❍20-676 f
❍20-677 f
❍20-678 f
❍20-679 f
❍20-680 f
❍20-681 f
❍20-682 f
❍20-683 f
Mark Page Rev
❍20-684 f
❍20-685 f
❍20-686 f
❍20-687 f
❍20-688 f
❍20-689 f
❍20-690 f
❍20-691 f
❍20-692 f
❍20-693 f
❍20-694 f
❍20-695 f
❍20-696 f
❍20-697 f
❍20-698 f
❍20-699 f
❍20-700 f
❍20-701 f
❍20-702 f
❍20-703 f
❍20-704 f
❍20-705 f
❍20-706 f
❍20-707 f
❍20-708 f
❍20-709 f
❍20-710 f
❍20-711 f
❍20-712 f
❍20-713 f
❍20-714 f
❍20-715 f
❍20-716 f
Mark Page Rev
Find manuals at https://best-manuals.com

FOREWORD
00-2-8 5WA450-5L WA480-5L
❍20-717 f
❍20-718 f
❍20-719 f
❍20-720 f
❍20-721 f
❍20-722 f
❍20-723 f
❍20-724 f
❍20-725 f
❍20-726 f
❍20-727 f
❍20-728 f
❍20-729 f
❍20-730 f
❍20-731 f
❍20-732 f
❍20-733 f
❍20-734 f
❍20-735 f
❍20-736 f
❍20-737 f
❍20-738 f
❍20-739 f
❍20-740 f
❍20-741 f
❍20-742 f
❍20-743 f
❍20-744 f
❍20-745 f
❍20-746 f
❍20-747 f
❍20-748 f
❍20-749 f
Mark Page Rev
❍20-750 f
❍20-751 f
❍20-752 f
❍20-753 f
❍20-754 f
❍20-755 f
❍20-756 f
❍20-757 f
❍20-758 f
❍20-759 f
❍20-760 f
❍20-761 f
❍20-762 f
❍20-763 f
❍20-764 f
❍20-765 f
❍20-766 f
❍20-767 f
❍20-768 f
❍20-769 f
❍20-770 f
❍20-771 f
❍20-772 f
❍20-773 f
❍20-774 f
●20-801 f
●20-802 f
●20-803 f
●20-804 f
●20-805 f
●20-806 f
●20-807 f
Mark Page Rev
●20-808 f
●20-809 f
●20-810 f
●20-811 f
●20-812 f
●20-813 f
●20-814 f
●20-815 f
●20-816 f
●20-817 f
●20-818 f
●20-819 f
●20-820 f
●20-821 f
●20-822 f
●20-823 f
●20-824 f
●20-825 f
●20-826 f
●20-827 f
●20-828 f
●20-829 f
●20-830 f
●20-831 f
●20-832 f
●20-833 f
●20-834 f
●20-835 f
●20-836 f
●20-837 f
●20-838 f
●20-839 f
●20-840 f
Mark Page Rev
●20-841 f
●20-842 f
●20-843 f
●20-844 f
●20-845 f
●20-846 f
●20-847 f
●20-848 f
●20-849 f
●20-850 f
●20-851 f
●20-852 f
●20-853 f
●20-854 f
●20-855 f
●20-856 f
●20-857 f
●20-858 f
●20-859 f
●20-860 f
●20-861 f
●20-862 f
●20-863 f
●20-864 f
●20-865 f
●20-866 f
●20-867 f
●20-868 f
●20-869 f
●20-870 f
●20-871 f
●20-872 f
●20-873 f
Mark Page Rev
Find manuals at https://best-manuals.com

FOREWORD
WA450-5L WA480-5L 00-2-9 5
●20-874 f
●20-875 f
●20-876 f
●20-877 f
●20-878 f
●20-879 f
●20-880 f
●20-881 f
●20-882 f
●20-883 f
●20-884 f
●20-885 f
●20-886 f
●20-887 f
●20-888 f
●20-889 f
●20-890 f
●20-891 f
●20-892 f
●20-893 f
●20-894 f
●20-895 f
●20-896 f
●20-897 f
●20-898 f
●20-899 f
●20-900 f
●20-901 f
●20-902 f
●20-903 f
●20-904 f
●20-905 f
●20-906 f
Mark Page Rev
●20-907 f
●20-908 f
●20-909 f
●20-910 f
●20-911 f
●20-912 f
●20-913 f
●20-914 f
●20-915 f
●20-916 f
●20-917 f
●20-918 f
●20-919 f
●20-920 f
●20-921 f
●20-922 f
●20-923 f
●20-924 f
●20-925 f
●20-926 f
●20-927 f
●20-928 f
●20-929 f
●20-930 f
●20-931 f
●20-932 f
●20-933 f
●20-934 f
❍20-935 f
❍20-936 f
( ) 20-951 b
( ) 20-952 b
Mark Page Rev
( ) 20-953 b
( ) 20-954 b
( ) 20-955 b
( ) 20-956 b
( ) 20-957 b
( ) 20-958 b
( ) 20-959 b
( ) 20-960 b
( ) 20-961 b
( ) 20-962 b
( ) 20-963 b
( ) 20-964 b
( ) 20-965 b
( ) 20-966 b
( ) 20-967 b
( ) 20-968 b
( ) 20-969 b
( ) 20-970 b
( ) 20-971 b
( ) 20-972 b
( ) 20-973 b
( ) 20-974 b
( ) 20-975 b
( ) 20-976 b
( ) 20-977 b
( ) 20-978 b
●20-1001 f
●20-1002 f
●20-1003 f
●20-1004 f
●20-1005 f
●20-1006 f
Mark Page Rev
●20-1007 f
●20-1008 f
●20-1009 f
●20-1010 f
●20-1011 f
●20-1012 f
●20-1013 f
●20-1014 f
●20-1015 f
●20-1016 f
●20-1017 f
●20-1018 f
●20-1019 f
●20-1020 f
●20-1021 f
●20-1022 f
●20-1023 f
●20-1024 f
●20-1025 f
●20-1026 f
●20-1027 f
●20-1028 f
●20-1029 f
●20-1030 f
●20-1031 f
●20-1032 f
●20-1033 f
●20-1034 f
●20-1035 f
●20-1036 f
●20-1037 f
●20-1038 f
●20-1039 f
Mark Page Rev

FOREWORD
00-2-10 5WA450-5L WA480-5L
●20-1040 f
●20-1041 f
●20-1042 f
●20-1043 f
●20-1044 f
❍20-1045 f
❍20-1046 f
❍20-1047 f
❍20-1048 f
❍20-1049 f
❍20-1050 f
30-1 c
30-2 c
30-3 c
30-4 c
30-5 c
30-6 c
30-7 c
30-8 c
30-9 c
30-10 c
30-11 c
30-12 c
30-13 c
30-14 c
30-15 c
30-16 c
30-17 c
30-18 c
30-19 c
30-20 c
30-21 c
Mark Page Rev
30-22 c
30-23 c
30-24 c
30-25 c
30-26 c
30-27 c
30-28 c
30-29 c
30-30 c
30-31 c
30-32 c
30-33 c
30-34 c
30-35 c
30-36 c
30-37 c
30-38 c
30-39 c
30-40 c
30-41 c
30-42 c
30-43 c
30-44 c
30-45 c
30-46 c
30-47 c
30-48 c
30-49 c
30-50 c
30-51 c
30-52 c
30-53 c
30-54 c
Mark Page Rev
30-55 c
30-56 c
30-57 c
30-58 c
30-59 c
30-60 c
30-61 c
30-62 c
30-63 c
30-64 c
30-65 c
30-66 c
30-67 c
30-68 c
30-69 c
30-70 c
30-71 c
30-72 c
30-73 c
30-74 c
30-75 c
30-76 c
30-77 c
30-78 c
30-79 c
30-80 c
30-81 c
30-82 c
30-83 c
30-84 c
30-85 c
30-86 c
30-87 c
Mark Page Rev
30-88 c
30-89 c
30-90 c
30-91 c
30-92 c
30-93 c
30-94 c
30-95 c
30-96 c
30-97 c
30-98 c
30-99 c
30-100 c
30-101 c
30-102 c
30-103 c
30-104 c
30-105 c
30-106 c
30-107 c
30-108 c
30-109 c
30-110 c
30-111 c
30-112 c
30-113 c
30-114 c
30-115 c
30-116 c
30-117 c
30-118 c
30-119 c
30-120 c
Mark Page Rev

FOREWORD
WA450-5L WA480-5L 00-2-11 5
30-121 c
30-122 c
30-123 c
30-124 c
30-125 c
30-126 c
30-127 c
30-128 c
30-129 c
30-130 c
30-131 c
30-132 c
30-133 c
30-134 c
30-135 c
30-136 c
30-137 c
30-138 c
30-139 c
30-140 c
30-141 c
30-142 c
30-143 c
30-144 c
30-145 c
30-146 c
30-147 c
30-148 c
30-149 c
30-150 c
30-151 c
30-152 c
30-153 c
Mark Page Rev
30-154 c
30-155 c
30-156 c
30-157 c
30-158 c
30-159 c
30-160 c
30-161 c
30-162 c
30-163 c
30-164 c
30-165 c
30-166 c
30-167 c
30-168 c
30-169 c
30-170 c
30-171 c
30-172 c
30-173 c
30-174 c
30-175 c
30-176 c
30-177 c
30-178 c
30-179 c
30-180 c
30-181 c
30-182 c
30-183 c
30-184 c
30-185 c
30-186 c
Mark Page Rev
30-187 c
30-188 c
30-189 c
30-190 c
30-191 c
30-192 c
30-193 c
30-194 c
30-195 c
30-196 c
30-197 c
30-198 c
30-199 c
30-200 c
30-201 c
30-202 c
30-203 c
30-204 c
30-205 c
30-206 c
30-207 c
30-208 c
30-209 c
30-210 c
30-211 c
30-212 c
30-213 c
30-214 c
30-215 c
30-216 c
30-217 c
30-218 c
30-219 c
Mark Page Rev
30-220 c
90-1 c
90-2 c
90-3 c
90-4 c
90-5 c
90-6 c
90-7 c
90-8 c
90-9 c
90-10 c
90-11 c
90-12 c
90-13 c
90-14 c
90-15 c
90-16 c
90-17 c
90-18 c
90-19 c
90-20 c
90-21 c
90-22 c
90-23 c
90-24 c
90-25 c
90-26 c
Mark Page Rev

FOREWORD
00-2-12 5WA450-5L WA480-5L
Mark Page Rev Mark Page Rev Mark Page Rev Mark Page Rev

FOREWORD SAFETY
WA450-5L WA480-5L 00-3
12
SAFETY 00
SAFETY NOTICE 00
GENERAL PRECAUTIONS 00
Mistakes in operation are extremely dangerous. Read the
OPERATION & MAINTENANCE MANUAL carefully
BEFORE operating the machine.
1. Before carrying out any greasing or repairs, read all the
precautions given on the decals which are fixed to the
machine.
2. When carrying out any operation, always wear safety
shoes and helmet. Do not wear loose work clothes, or
clothes with buttons missing.
●Always wear safety glasses when hitting parts with a
hammer.
●Always wear safety glasses when grinding parts with a
grinder, etc.
3. If welding repairs are needed, always have a trained,
experienced welder carry out the work. When carrying
out welding work, always wear welding gloves, apron,
glasses, cap and other clothes suited for welding work.
4. When carrying out any operation with two or more
workers, always agree on the operating procedure
before starting. Always inform your fellow workers
before starting any step of the operation. Before starting
work, hang UNDER REPAIR signs on the controls in
the operator's compartment.
5. Keep all tools in good condition and learn the correct
way to use them.
6. Decide a place in the repair workshop to keep tools and
removed parts. Always keep the tools and parts in their
correct places. Always keep the work area clean and
make sure that there is no dirt or oil on the floor. Smoke
only in the areas provided for smoking. Never smoke
while working.
PREPARATIONS FOR WORK 00
1. Before adding oil or making repairs, park the machine
on hard, level ground, and block the wheels or tracks to
prevent the machine from moving.
2. Before starting work, lower blade, ripper, bucket or any
other work equipment to the ground. If this is not possi-
ble, insert the safety pin or use blocks to prevent the
work equipment from falling. In addition, be sure to
lock all the control levers and hang warning signs on
them.
3. When disassembling or assembling, support the
machine with blocks, jacks or stands before starting
work.
4. Remove all mud and oil from the steps or other places
used to get on and off the machine. Always use the
handrails, ladders or steps when getting on or off the
machine. Never jump on or off the machine. If it is
impossible to use the handrails, ladders or steps, use a
stand to provide safe footing.
PRECAUTIONS DURING WORK 00
1. When removing the oil filler cap, drain plug or
hydraulic pressure measuring plugs, loosen them slowly
to prevent the oil from spurting out. Before
disconnecting or removing components of the oil, water
or air circuits, first remove the pressure completely from
the circuit.
2. The water and oil in the circuits are hot when the engine
is stopped, so be careful not to get burned. Wait for the
oil and water to cool before carrying out any work on
the oil or water circuits.
3. Before starting work, remove the leads from the battery.
ALWAYS remove the lead from the negative (-)
terminal first.
IMPORTANT SAFETY NOTICE 00
Proper service and repair is extremely important for the safe operation of your machine. The service and repair techniques
recommended and described in this manual are both effective and safe methods of operation. Some of these operations
require the use of tools specially designed for the purpose.
To prevent injury to workers, the symbols are used to mark safety precautions in this manual. The cautions
accompanying these symbols should always be followed carefully. If any dangerous situation arises or may possibly arise,
first consider safety, and take the necessary actions to deal with the situation.

FOREWORD SAFETY
00-4 WA450-5L WA480-5L
12
4. When raising heavy components, use a hoist or crane.
Check that the wire rope, chains and hooks are free from
damage. Always use lifting equipment which has ample
capacity. Install the lifting equipment at the correct
places. Use a hoist or crane and operate slowly to pre-
vent the component from hitting any other part. Do not
work with any part still raised by the hoist or crane.
5. When removing covers which are under internal pres-
sure or under pressure from a spring, always leave two
bolts in
position on opposite sides. Slowly release the pressure,
then slowly loosen the bolts to remove.
6. When removing components, be careful not to break or
damage the wiring, Damaged wiring may cause electri-
cal fires.
7. When removing piping, stop the fuel or oil from spilling
out. If any fuel or oil drips on to the floor, wipe it up
immediately. Fuel or oil on the floor can cause you to
slip, or can even start fires.
8. As a general rule, do not use gasoline to wash parts. In
particular, use only the minimum of gasoline when
washing
electrical parts.
9. Be sure to assemble all parts again in their original
places. Replace any damaged part with new parts.
•When installing hoses and wires, be sure that they
will not be damaged by contact with other parts
when the machine is being operated.
10. When installing high pressure hoses, make sure that
they are not twisted. Damaged tubes are dangerous, so
be extremely careful when installing tubes for high pres-
sure circuits. Also check that connecting parts are cor-
rectly installed.
11. When assembling or installing parts, always use the
specified tightening torques. When installing protective
parts such as guards, or parts which vibrate violently or
rotate at high speed, be particularly careful to check that
they are installed
correctly.
12. When aligning two holes, never insert your fingers or
hand. Be careful not to get your fingers caught in a hole.
13. When measuring hydraulic pressure, check that the
measuring tool is correctly assembled before taking any
measurements.
14. Take care when removing or installing the tracks of
track-type machines. When removing the track, the
track separates suddenly, so never let anyone stand at
either end of the track.

FOREWORD GENERAL
WA450-5L WA480-5L 00-5
12
GENERAL 00
This shop 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 shop 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. These sections are further divided into each main
group of components.
GENERAL
This section lists the general machine dimensions, performance specifications, component weights, and fuel, coolant and
lubricant specification charts.
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.
TESTING, ADJUSTING AND TROUBLESHOOTING
This section explains checks to be made before and after performing repairs, as well as adjustments to be made at
completion of the checks and repairs. Troubleshooting charts correlating “Problems” to “Causes” are also included in this
section.
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.
MAINTENANCE STANDARD
This section gives the judgement standards when inspecting disassembled parts.
NOTICE
The specifications contained in this shop manual are subject to change at any time and without any advance notice. Contact
your distributor for the latest information.

FOREWORD HOW TO READ THE SHOP MANUAL
00-6 WA450-5L WA480-5L
12
HOW TO READ THE SHOP MANUAL 00
VOLUMES 00
Shop manuals are issued as a guide to carrying out repairs.
They are divided as follows:
Chassis volume: Issued for every machine model
Engine volume: Issued for each engine series
Electrical volume: Each issued as one to cover all models
Attachment volume: Each issued as one to cover all models
These various volumes are designed to avoid duplication of
information. Therefore to deal with all repairs for any model,
it is necessary that chassis, engine, electrical and attachment
be available.
DISTRIBUTION AND UPDATING 00
Any additions, amendments or other changes will be sent to
your distributors. Get the most up-to-date information before
you start any work.
FILING METHOD 00
1. See the page number on the bottom of the page. File the
pages in correct order.
2. Following examples show how to read the page number:
Example:
10 - 3
Item number (10. Structure and Function)
Consecutive page number for each item
3. Additional pages: Additional pages are indicated by a
hyphen (-) and numbered after the page number. File as
in the example.
Example:
REVISED EDITION MARK 00
When a manual is revised, an edition mark (123…) is
recorded on the bottom outside corner of the pages.
REVISIONS 00
Revised pages are shown at the LIST OF REVISED PAGES
between the title page and SAFETY page.
SYMBOLS 00
So that the shop manual can be of ample practical use,
important places for safety and quality are marked with the
following symbols.
10-4
10-4-1 Added pages
10-4-2
10-5
Symbol Item Remarks
Safety Special safety precautions are necessary when performing the
work.
★Caution
Special technical precautions or
other precautions for preserving
standards are necessary when
performing the work.
Weight
Weight of parts or systems. Cau-
tion necessary when selecting
hoisting wire or when working
posture is important, etc.
Tightening
torque
Places that require special atten-
tion for tightening torque during
assembly.
Coat Places to be coated with adhe-
sives and lubricants etc.
Oil, water Places where oil, water or fuel
must be added, and the capacity.
Drain Places where oil or water must be drained, and quantity to be
drained.

FOREWORD HOISTING INSTRUCTIONS
WA450-5L WA480-5L 00-7
12
HOISTING INSTRUCTIONS 00
HOISTING 00
●If a part cannot be smoothly removed from the machine
by hoisting, the following checks should be made:
1. Check for removal of all bolts fastening the part to the
relative parts.
2. Check for existence of another part causing interface
with the part to be removed.
WIRE ROPES 00
1. Use adequate ropes depending on the weight of parts to
be hoisted, referring to the table below:
★The allowable load value is estimated to be 1/6 or 1/7 of
the breaking strength of the rope used.
2. Sling wire ropes from the middle portion of the hook.
Slinging near the edge of the hook may cause the rope to
slip off the hook during hoisting, and a serious accident
can result. Hooks have maximum strength at the middle
portion.
3. Do not sling a heavy load with one rope alone, but sling
with two or more ropes symmetrically wound on to the
load.
4. Do not sling a heavy load with ropes forming a wide
hanging angle from the hook. When hoisting a load with
two or more ropes, the force subjected to each rope will
increase with the hanging angles. The table below
shows the variation of allowable load (kg) when hoist-
ing is made with two ropes, each of which is allowed to
sling up to 1000 kg vertically, at various hanging angles.
When two ropes sling a load vertically, up to 2000 kg of
total weight can be suspended. This weight becomes
1000 kg when two ropes make a 120° hanging angle. On
the other hand, two ropes are subject to an excessive
force as large as 4000 kg if they sling a 2000 kg load at a
lifting angle of 150°
WARNING! Heavy parts (25 kg or more)
must be lifted with a hoist etc.
In the DISASSEMBLY AND
ASSEMBLY section, every
part weighing25 kg or more is
indicated clearly with the sym-
bol.
Wire ropes
(Standard “Z” or “S” twist ropes without galvanizing)
Rope diameter Allowable load
mm kN tons
10 9.8 1.0
11.2 13.7 1.4
12.5 15.7 1.6
14 21.6 2.2
16 27.5 2.8
18 35.3 3.6
20 43.1 4.4
22.4 54.9 5.6
30 98.1 10.0
40 176.5 18.0
50 274.6 28.0
60 392.2 40.0
WARNING! Slinging with one rope may
cause turning of the load dur-
ing hoisting, untwisting of the
rope, or slipping of the rope
from its original winding posi-
tion on the load, which can
result in a dangerous accident

FOREWORD PUSH PULL COUPLER
00-8 eWA450-5L WA480-5L
12
PUSH PULL COUPLER 00
TYPE 1 00
DISCONNECTION 00
1. Release the residual pressure from the hydraulic tank. For
details, see TESTING AND ADJUSTING, Releasing residual
pressure from hydraulic tank.
2. Hold the adapter band push the hose joint cinto the mating
adapter dThe adapter can be pushed in about 3.5 mm. Do
not hold the rubber cap portion e.
3. After the hose joint cis pushed into the adapter d, press the
rubber cap portion eagainst the adapter until it clicks.
4. Hold the hose adapter bor hose fand pull it out. Since
some hydraulic oil flows out, prepare an oil receiving contain-
er.
CONNECTION 00
1. Hold the hose adapter bor hose fand insert it in the mating
adapter d, aligning them with each other. Do not hold the
rubber cap portion e.
2. After inserting the hose in the mating adapter perfectly, pull it
back to check its connecting condition. When the hose is
pulled back, the rubber cap portion moves toward the hose
about 3.5 mm. This does not indicate abnormality, however.
WARNING! Before carrying out the following work, re-
lease the residual pressure from the hydraulic tank.
For details, see TESTING AND ADJUSTING, Releasing
residual pressure from hydraulic tank.
WARNING! Even if the residual pressure is released
from the hydraulic tank, some hydraulic oil flows out
when the hose is disconnected. Accordingly, prepare
an oil receiving container.