0434703 JOHNSON INTAKE AY.

May 13, 2004
(Revised June 2004)
U-160
A-109
D-123
O-133
beforeor
after failure PRODUCT SUPPORT PROGRAM FOR REDUCING HIGHENGINE COMPARTMENT TEMPERATURES ON CERTAIN 834G WHEEL DOZERS AND 988G WHEELLOADERS
1067 PS41565
This Program can be administered eitherbefore or after failure. In either case the decision whether to apply theProgram is made by the dealer. When reporting the repair, use "PS41565"as the Part number and "7755" as the Group Number. If administered beforefailure, use "56" as the Warranty Claim Description Code and use "T" asthe SIMS Description Code. If administered after failure, use "96" as theWarranty Claim Description Code and use "Z" as the SIMS Description Code. The information supplied in this serviceletter may not be valid after the termination date of this program. Donot perform the work outlined in this Service Letter after the terminationdate without first contacting your Caterpillar product analyst. This Revised Service Letter replacesthe May 13, 2004 Service Letter. Changes have been made to the Action Required.TERMINATION DATE
May 31, 2007PROBLEM
High engine compartment temperatures can damagenon-metallic engine components on certain 834G Wheel Dozers and 988G WheelLoaders. Machines with medium and high ambient attachments (part numbers1640055, 1938767, 2152339 and 2152353) can install an improved engine heatshield, muffler sealant, valve cover seal and hood deflector group. Machineswith standard ambient attachment can install an improved engine heat shield,muffler sealant and valve cover seal.AFFECTED PRODUCT
Model Identification Number
***** Group 1 ? High and Medium Ambient machines *****
834G 6GZ1-UpBPC1-169
988G 2TW74, 81, 84, 85, 86, 87, 89, 90, 91, 92,94, 95, 96, 97, 107, 110, 111, 113, 118, 119, 120, 125, 126, 133, 134,135, 137, 139, 140, 141, 142, 144, 153, 156, 157, 161, 162, 165, 167, 170,177, 181, 300, 313, 319, 322, 330, 341, 342, 343, 361, 365, 367, 368, 371,376, 377, 380, 382, 385, 387, 388, 390, 392, 398, 402, 408, 417, 421, 424,426, 433, 435, 436, 438, 439, 441, 448, 453, 455, 456, 462, 463, 464, 466,469, 470, 472, 473, 475, 486, 488, 493, 498, 501, 502, 504, 505, 506, 507,517, 519, 521, 522, 523, 525, 527, 529, 531, 533, 535, 537, 539, 545, 547,548, 549, 550, 552, 558, 561, 562, 563, 567, 569, 571, 572, 575, 576, 578,579, 580, 581, 582, 583, 584, 585, 586, 588, 589, 590, 591, 594, 596, 598,599, 600, 601, 602, 605, 607, 608, 609, 610, 611, 613, 614, 615, 623, 624,625, 626, 628, 629, 630, 631, 632, 633, 634, 635, 636, 638, 642, 644, 646,650, 651, 653, 654, 656, 657, 658
BNH333, 335, 338, 341, 342, 343, 344, 347, 353, 355, 356, 358, 359,379, 383, 385, 392, 394, 395, 397, 398, 400, 401, 411, 417, 429, 433, 434,438, 439, 440, 441, 442, 443, 445, 453, 454, 456, 457, 460, 462, 463, 469,475, 480, 483, 485, 487, 489, 490, 491, 492, 493, 494, 496, 497, 498, 501,503, 506, 507, 511, 512, 515, 517, 518, 519, 521, 523, 525, 528, 529, 531,532, 534, 536, 538, 539, 541, 545, 549, 558, 560, 563, 567, 571, 572, 573,579, 582, 584, 595, 596, 598, 600, 602, 603, 604, 605, 611, 625, 631, 632,633, 634, 635, 636, 638, 640, 646, 647, 651, 652, 655, 656, 657, 658, 660,661, 662, 666, 668, 671, 673, 679, 680, 681, 682, 683, 686, 703, 709, 710,713, 716, 718, 722, 736, 740, 747, 748, 751, 752, 753, 755, 765, 768, 769,770, 771, 779, 791, 792, 793, 795, 800, 802, 805, 811, 816, 822, 824, 825,827, 831, 832, 835, 837, 841, 842, 843, 845, 850, 854, 856, 857, 859, 861,863, 867, 868, 871, 874, 880, 884, 887, 891, 901, 910, 912, 915, 916, 917,918, 919, 921, 922, 923, 925, 926, 927, 929, 930, 935, 939, 941, 942, 943,944, 945, 946, 947, 948, 952, 960, 971, 973, 974, 975, 981, 982, 983, 984,985, 986, 987, 989, 992, 993, 1004, 1005, 1008, 1009, 1015, 1017, 1018,1019, 1020, 1021, 1022, 1024, 1029, 1030, 1033, 1035, 1037, 1038, 1039,1040, 1041, 1050, 1053, 1054, 1055, 1057, 1058, 1059, 1060, 1061, 1062,1064, 1065, 1070, 1071, 1074, 1075, 1076, 1078, 1079, 1080, 1096, 1103,1105, 1106, 1109, 1123, 1125-1127, 1130, 1132, 1135, 1137, 1142, 1143,1146, 1150, 1153-1155
***** Group 2 ? Standard Ambient machines *****
988G 2TW75-80, 82, 83, 88, 93, 98-106, 108, 109,112, 114-117, 121-124, 127-132, 136, 138, 143, 145-152, 154, 155, 158-160,163, 164, 166, 168, 169, 171-176, 178-185, 301-318, 320, 321, 323-329,331-340, 344-360, 362-364, 366, 369, 370, 372-375, 378, 379, 381, 383,384, 386, 389, 391, 393-397, 399-401, 403-407, 409-416, 418-420, 422, 423,425, 427-432, 434, 437, 440, 442-447, 449-452, 454, 457-461, 465, 467,468, 471, 474, 476-485, 487, 489-492, 494-497, 499, 500, 503, 508-516,518, 520, 524, 526, 528, 530, 532, 534, 536, 538, 540, 541-544, 546, 551,553-557, 559, 560, 564-566, 568, 570, 573, 574, 577, 587, 592, 593, 595,597, 603, 604, 606, 612, 616-622, 627, 637, 639-641, 643, 645, 647-649,652, 655, 659BNH334, 336, 337, 339, 340, 345, 346, 348, 349, 351, 352, 354, 357, 360-378,380-382, 384, 386-391, 393, 396, 399, 402-410, 412-416, 418-428, 430, 431,432, 435-437, 444, 446-452, 455, 458, 459, 461, 464-468, 470, 471-474,476-479, 481, 482, 484, 486, 488, 495, 499, 500, 502, 504, 508-510, 513,516, 520, 522, 524, 526, 527, 530, 533, 535, 537, 540, 542, 543, 544, 546-548,550-557, 559, 561, 562, 564-566, 569, 570, 574-578, 580, 581, 583, 585,586, 588-594, 597, 599, 601, 606-610, 612-624, 626, 628, 630, 637, 639,641-645, 648-650, 653, 654, 659, 663-665, 667, 669, 670, 672, 674-678,684, 685, 687-708, 711, 712, 714, 715, 717, 719-721, 723-735, 737, 738,739, 741-746, 749, 750, 754, 756-764, 766, 767, 772-778, 780-790, 794,796-799, 801, 803, 804, 806-810, 812-815, 817-821, 823, 826, 828-830, 833,834, 836, 838-840, 844, 846-849, 851, 852, 853, 855, 858, 860, 862, 864-866,869, 870, 872, 873, 875-879, 881-883, 885, 886, 888-890, 892-900, 902-909,911, 913, 914, 920, 924, 928, 931-934PARTS NEEDED
***** Group 1 ? High andMedium Ambient machines *****
4 - 9L7373 Bolt ? High
4 - 5M2894 Washer ? Hard
1 - 9N0720 Elbow ?