2008/08/18 Caterpillar

A New Duct Assembly For The Alternator Is Being Installed {1405}

Usage:

D6T DJG

Track-Type Tractor: D6RSeries III (S/N: GJB1-UP; WCB1-UP; HDC1-UP; TBC1-UP; HCD1-UP; HKE1-UP; WRG1-UP; DMK1-UP; JEK1-UP; EXL1-UP; JDL1-UP; LFM1-UP; LGP1-UP; GMT1-UP; MRT1-UP) D6T (S/N: JHB1-UP; LAE1-UP; DJG1-UP; WCG1-UP; WFH1-UP; KJL1-UP; SKL1-UP; GCT1-UP; LAY1-UP)

ReferenceRefer to Special Instruction, REHS4358, "Installation Procedure For The New Duct Assembly".

Description of Change: A new duct assembly for the alternator is now being installed on the D6RSeries III and the D6T Track-Type Tractors. The new duct assembly has a smaller diameter. The smaller duct assembly will eliminate possible interference with the engine access panel. This will not affect the operation of the alternator.

Adaptable To: The new 281-7377 Duct will replace the previous 263-5031 Duct As .

The new duct assembly for the alternator is effective with the following:

D6RSeries III (S/N: JDL247-UP; GMT246-UP; LGP197-UP; JEK120-UP; EXL205-UP)
D6T (S/N: WFH378-UP; WCG456-UP; SKL496-UP; LAY876-UP; KJL789-UP; JHB263-UP; DJG392-UP; LAE225-UP; GCT323-UP)

The new duct assembly for the alternator is adaptable to the following:

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Table 1
D6R Series III Adaptable to Serial Numbers
Serial Number Prefix	Serial Numbers
GMT	160, 246
HCD	123 -132, 134 -141, 149 - 154, 156 - 158, 160, 162 - 164, 169, 178 - 195, 197 - 216
JEK	109, 112 - 115, 118 - 119
TBC	189 - 191, 380
DMK	273
LGP	195 - 196
WRG	156, 163, 168, 177, 182 - 183, 206, 213, 294, 322, 325, 340, 353, 355 - 356, 358 - 360, 365, 392, 411 - 412, 417 - 421, 432, 471 - 475, 478, 491, 496, 500 - 501, 503 - 504, 530, 546, 555 - 556, 568 - 569, 591, 604 - 606, 615 - 618, 622, 630, 640, 642, 644, 650, 652, 664, 671 - 672, 674 - 675, 678, 682, 689, 697 - 707, 726, 735 - 737, 740, 743, 751, 756 - 757, 764, 766, 768, 770, 773 - 779, 793, 800, 802, 821, 823 - 826, 850 - 851, 857, 860
EXL	126, 129, 132, 142, 165 - 167, 195 - 196, 200 - 202
GJB	194 - 195, 216 - 217, 231, 278 - 279, 298, 303, 314 - 315, 323, 338, 363, 369 - 370, 372, 377, 394, 404 - 405, 414, 424 - 426, 450, 468 - 469, 476, 511, 546, 551 - 553, 568, 579, 591 - 593, 602, 610, 617, 625 - 628, 631, 653, 674, 713 - 714, 724 - 725, 733, 735, 758, 777, 814, 828, 844 - 845, 865, 911, 916 - 917, 955, 964, 1001 - 1003, 1009, 1017, 1064 - 1065
JDL	155, 346
LFM	377
MRT	166 - 168, 170 - 174, 188, 190, 195, 197 - 199, 203, 219 - 221, 234, 241 - 244, 252 - 254, 265 - 266, 278, 280 - 281, 299, 302 - 303, 311, 323, 332, 354, 373 - 377, 385 - 392, 412 - 414, 423 - 424, 426 - 429, 432, 435 - 444, 458, 462 - 469, 488 - 500, 502 - 504, 512, 527, 535
WCB	114 - 115, 117, 120, 128 - 129, 133 - 134, 136 - 137, 139 - 144, 147, 151 - 154, 159 - 161, 167, 175 - 179, 183 - 191, 193, 195 - 203, 209 - 215, 218 - 234, 236 - 241, 243, 247 - 251, 253 - 257, 261 - 263, 268 - 273, 275
HKE	151, 164 - 166, 173, 200, 223, 233, 235, 237, 247 - 248, 258 - 259, 262
HDC	145 - 146, 149 - 150, 152 - 154, 158 - 161, 163, 170 - 175, 177 - 182, 194 - 199, 201 - 203, 209, 213 - 215, 218, 221, 223 - 230, 237 - 241, 250 - 254, 262 - 266, 276 - 279, 292, 301 - 303, 305 - 306

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Table 2
D6T Adaptable to Serial Numbers
Serial Numver Prefix	Serial Numbers
JHB	141 - 144, 147, 179, 262
KJL	400, 405, 407, 417, 444 - 445, 466, 483, 489, 507 - 511, 529 - 530, 534 - 541, 558 - 563, 567 - 572, 575, 596 - 600, 611 - 612, 616, 636, 651 - 656, 669, 688, 692, 695, 712, 726 - 736, 740
WCG	342, 361, 363 - 370, 375 - 383, 385 - 387, 389, 392 - 394, 401 - 404, 423 - 425, 430, 435 - 438, 452 - 454
WFH	279, 305, 312, 314, 319, 324, 331, 344, 352 - 353, 355, 360, 377
DJG	296 - 00297, 326 - 333, 340 - 355, 363 - 367, 370, 372, 389
GCT	243, 247, 287, 294
LAE	141
LAY	510, 527, 534, 558, 608, 622, 645, 650, 661, 683 - 684, 712, 738 - 739, 794, 819, 825, 875
SKL	284 - 00290, 303, 340 - 341, 361 - 366, 370 - 373, 376 - 380, 383, 385, 423 - 425, 494 - 495