29256 Mercury SCREW, LOWER MOUNT CLAMP TO DRIVE SHAFT HOUSING (7/8")

10Nov2017
(Revised 10Oct2018)
U-621
A-442
D-523
O-519
After Failure Only
PRODUCT SUPPORT PROGRAM FOR REROUTING THE DEF LINE, REPLACING THE DEF INJECTOR, AND REFLASHING THE ENGINE SOFTWARE ON CERTAIN 926M, 930M, AND 938M WHEEL LOADERS
1920 108I 108K PS53617
Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.
This Program can only be administered after a failure occurs.The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS53617" as the Part Numberand "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.
The information supplied in this service letter may not be valid after the termination date of this program.Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.
This Revised Service Letter replaces the 10Nov2017 (Revised 25Dec2017) Service Letter. Changes have been made to the Parts Needed.
TERMINATION DATE
30Nov2019
PROBLEM
The DEF line to the DEF injector needs to be replaced on certain 926M, 930M, and 938M Wheel Loaders. The existing DEF line routing can lead to DEF injector plugging that can lead to partial or full blockage of DEF flow.
The updated engine software provides improvements for BPV control, DEF level strategy, DEF quality sensor strategy, DEF injector strategy and SCR storage model, and ether injection quantity.
AFFECTED PRODUCT
Model Identification Number
926M LTE00100-00104, 150-154, 251-252, 255-260, 262-269, 271-272, 274-275, 277, 279-281, 283-285, 287-292, 294, 298, 300-305, 307-309, 311, 314-320, 322-329, 331-334, 337-343, 345, 347, 349-353, 355, 358, 361-363, 365-371, 373, 375-377, 379-386, 388-390, 394, 396-401, 403-406, 408-418, 421-426, 428-448, 450-463, 465-470, 472-479, 481-487, 489-493, 495-503, 505-509, 511-532, 534-553, 555-557, 559-561, 563-571, 573-576, 578, 580-582, 584-588, 590, 592-593, 595-596, 598-599, 601, 604-607, 609-612, 614, 616, 618-619, 621-632, 634-638, 640-645, 647-648, 651-653, 655-660, 663-665, 667-669, 672, 675-677, 679-688, 690-696, 699-705, 707-713, 715-720, 722-726, 728-764, 766-804, 806-810, 812-813, 815-825, 828-831, 833-835, 837-843, 845-846, 848-859, 861-864, 866-896, 899-907, 909, 911-922, 924-946, 948-980, 982-989, 991-992, 994-1007, 1009-1013, 1015-1019, 1021-1022, 1024-1051, 1053-1054, 1056-1093, 1095-1109, 1111-1122, 1124-1127, 1129-1132, 1134-1138, 1140-1141, 1143-1178, 1180-1181, 1183-1196, 1198-1203, 1205-1206, 1208-1216, 1218-1221, 1223-1226, 1228-1234, 1236-1250, 1252-1261, 1900-1926, 1928-1935, 1937, 1939-1945, 1948, 1950-1965, 1967-1969, 1971, 1973-1998, 2000-2003, 2005-2007, 2010-2012, 2014-2027, 2029-2032, 2034-2048, 2050-2055, 2057-2070, 2073, 2075-2088, 2090-2097, 2099-2106, 2108, 2111-2117, 2119, 2121-2122, 2125-2133, 2135-2137, 2139-2146, 2148-2155, 2157-2158, 2160-2164, 2167-2186, 2188-2214, 2216-2219, 2221-2224, 2226-2243, 2245-2269, 2271-2290, 2292-2306, 2308-2329, 2331-2335, 2338-2344, 2346-2359, 2361-2387, 2389-2396, 2398-2401, 2403-2411, 2413-2415, 2417-2430, 2432-2433, 2435-2442, 2444-2483, 2485-2517, 2519-2526, 2528-2552, 2554-2558, 2560, 2562-2575, 2577-2581, 2585-2588, 2590-2594, 2596-2605, 2607-2637, 2639-2663, 2665-2680, 2682-2696, 2698-2716, 2718-2727, 2729-2781, 2783-2784, 2786-2813, 2815-2817, 2819-2834, 2836-2868, 2870-2883, 2885-2931, 2933-2937, 2939-2945, 2947-3004, 3006-3010, 3012-3033, 3500-4404, 4406-4519, 4521-4673
930M HEY00105-00108, 250-315
KTG00130-00134, 171-173, 350, 352-359, 361-365, 367-374, 376-382, 384, 386-389, 391, 393, 395, 397-409, 411, 413-417, 419-428, 430, 432-435, 437-439, 441-449, 451-454, 456-470, 472, 474-477, 479-496, 499, 501-510, 513-524, 526-528, 530-531, 534, 536-538, 540-541, 543-566, 568-575, 577-578, 580-584, 586-597, 599-609, 611, 613-615, 617, 619-621, 623, 625-628, 630-652, 654-656, 658, 660-690, 692-705, 707-712, 714-759, 761-763, 765-769, 771-781, 783-790, 792, 794-797, 799-803, 805-808, 810-812, 814-854, 856-864, 866-868, 870-878, 880-886, 888, 890, 893-898, 901-902, 904-917, 919-927, 929-933, 935-974, 976-977, 979-997, 999, 1001-1003, 1005-1009, 1011-1015, 1017-1029, 1031-1048, 1050-1076, 1078-1087, 1090-1116, 1600-1612, 1614, 1617, 1619, 1621-1626, 1628-1629, 1632-1636, 1638-1643, 1645-1650, 1652-1673, 1675-1682, 1684-1685, 1687-1689, 1691-1709, 1711-1714, 1716-1736, 1738, 1740-1743, 1745-1752, 1754-1772, 1774-1775, 1778-1809, 1811, 1813-1834, 1836-1839, 1841-1880, 1883-1884, 1886-1890, 1892, 1894, 1896-1923, 1925-1959, 1961-2010, 2012-2019, 2021-2047, 2049-2050, 2052-2055, 2057-2106, 2108-2137, 2139-2180, 2182-2193, 2195-2218, 2220-2244, 2246-2254, 2256-2265, 2267-2336, 3000-3033, 3035-3139, 3141-3456, 3458-3685
938M