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Home / Transmissions / Allison / AT 545
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Allison AT 545 Transmission

Type Automatic
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AT 545
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Exploded diagram & parts

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777 777 · No. 1 309 309 · No. 2 179 179 · No. 3 178 178 · No. 4 070 070 · No. 5 034 034 · No. 6 311 311 · No. 7 530 530 · No. 8 530 530 · No. 9 381 381 · No. 10 036 036 · No. 11 520 520 · No. 12 037 037 · No. 13 310 310 · No. 14 211* 211* · No. 15 670 670 · No. 16 704 704 · No. 17 898 898 · No. 18 554 554 · No. 19 335 335 · No. 20 334 334 · No. 21 964 964 · No. 22 974 974 · No. 24 984 984 · No. 26 877 877 · No. 27 231 +2 231, 232, 230 · No. 28 574 574 · No. 29 124/104 124, 104 · No. 30 570 570 · No. 31 876 876 · No. 32 235 235 · No. 33 777A 777A · No. 34 778 778 · No. 35 876 876 · No. 36 144 144 · No. 37 124/104 124, 104 · No. 38 862 862 · No. 39 980 980 · No. 40 970 970 · No. 41 960 960 · No. 44 331 331 · No. 45 330 330 · No. 46 550 550 · No. 47 878 878 · No. 48 146* 146* · No. 49 126/106 126, 106 · No. 50 879 879 · No. 51 985/985-5 985, 985-5 · No. 52 975 975 · No. 55 965 965 · No. 57 336/337 336, 337 · No. 58 044 044 · No. 59 179 179 · No. 60 630 630 · No. 61 336/337 336, 337 · No. 62 962 962 · No. 63 972 972 · No. 66 982 982 · No. 68 874 874 · No. 69 783 783 · No. 73 996 996 · No. 77 757/319 757, 319 · No. 78 126/106 126, 106 · No. 79 146* 146* · No. 80 054 054 · No. 81 674 674 · No. 82 054 054 · No. 83 239 239 · No. 84 612 612 · No. 85 241 241 · No. 86 582 582 · No. 87 053 053 · No. 88 238 238 · No. 89 882 882 · No. 90 592 592 · No. 91 610 610 · No. 92 580 580 · No. 93 244 244 · No. 94 760 760 · No. 95 896 896 · No. 96 271 271 · No. 97 897 897 · No. 98 074 074 · No. 99 798 798 · No. 100 888 888 · No. 101 590 590 · No. 102 672 672 · No. 103 614 614 · No. 104 889 889 · No. 105 626 626 · No. 106 247/248 247, 248 · No. 107 894 894 · No. 108 584 584 · No. 109 062 062 · No. 110 882 882 · No. 111 678 678 · No. 112 268 268 · No. 113 269 269 · No. 114 410 410 · No. 115 116 116 · No. 116 163 163 · No. 117 843 843 · No. 118 119 119 · No. 119 120 120 · No. 120 121 121 · No. 121 379 379 · No. 122 740 740 · No. 123 306 +3 306, 680, 686, 684 · No. 124 683 683 · No. 125 847 847 · No. 126 892 892 · No. 127 148* 148* · No. 128 108 108 · No. 129 594 594 · No. 130 128/108 128, 108 · No. 131 893 893 · No. 132 987 987 · No. 133 977 977 · No. 139 967 967 · No. 143 339 339 · No. 144 338 338 · No. 145 495 495 · No. 146 846 846 · No. 147 991-3 991-3 · No. 148 765/300 765, 300 · No. 149 010 010 · No. 150 072 072 · No. 151 991-4 991-4 · No. 152 153 153 · No. 153 154 154 · No. 154 991-2 991-2 · No. 155 774 774 · No. 156 347 347 · No. 157 779 779 · No. 158

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Common problems & symptoms

Problems and symptoms reported for this transmission, compiled from repair sources. Not a complete list.

!
Governor valve wear
A worn governor valve or governor port can cause loss of governor pressure when the fluid is warm, resulting in unexpected downshifts and the transmission getting stuck in a lower gear.
!
Electric modulator relay/circuit fault
The electric modulator relay circuit can energize at the wrong throttle position (e.g., as soon as throttle is touched instead of at 60%), causing abnormal shift behavior.
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Sources & Contribution

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Every claim on this page is backed by a structured source record — including community contributions, each with its own reference.

Type
Title
Author
Link
manual
Allison AT540/AT543/AT545 Parts Catalog (JPAT)
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link
Xcalliber Allison AT 540/542/545 Publications and Parts
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