0437213 JOHNSON CARBURETOR ASSY.

11Aug2014
(Revised 21Oct2014)
U-479
A-348
D-424
O-401
Before/After
PRODUCT SUPPORT PROGRAM FOR REPLACING THE ENGINE SOFTWARE ON CERTAIN 950K, AND 962K WHEEL LOADERS
1920 7610 7620 PS44446
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 must be administered either before or after failure.In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS44446" as the Part Numberand "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code.If administered after failure, use "96" as the Warranty Claim Description Code, and "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 11Aug2014 (Revised 19Aug2014) Service Letter. Changes have been made to the Affected Product, and Service Claim Allowances.
TERMINATION DATE
31Aug2016
PROBLEM
The existing software may lead to the operator experiencing active Event Code (E1050-2) High ARD Fuel Pressure, preventing DPF regeneration on certain 950K, and 962K Wheel Loaders.
Previous troubleshooting may have lead technicians to replace the ARD head
prematurely.
If the issue is caused by the software de-bounce threshold, while clearing the active diagnostic code from the ECM allows regeneration to take place, the fault may repeat itself again at the next auto regeneration.
AFFECTED PRODUCT
Model Identification Number
*******Group 1*******
950K FER00153-00155, 157-180, 183-188, 229-234, 237, 240-243, 245-261, 264-265, 280, 282-283, 313-316, 319-323, 327-352, 354-365, 367, 371, 373-379, 381, 383, 385, 394, 396, 399, 401, 403-404, 407, 409-413, 415-440, 442-500, 503-510, 512-513, 515, 517, 519-520, 522, 524, 526-527, 529-531, 533, 536-537, 541-543, 545-549, 551-552, 554, 556, 560, 583-584, 586, 588-592, 594-602, 604, 606, 608, 610-616, 618-621, 623-624, 627-630, 632-634, 636-637, 639-648, 650, 652, 654-655, 657, 659-661, 663-664, 666-672, 674-679, 682-684, 687, 689, 692, 694, 713-716, 718, 727, 729, 743, 751, 754, 757, 851, 853, 855-856, 859, 864, 866, 870, 872-874, 876
J5M00177-00558, 1000-1123, 1125-1168
R4A00250-00253, 255, 277, 320-321, 325, 327-329, 347, 350, 353, 356, 360, 362, 364, 373, 377, 405-407, 410-413, 427-432, 435, 446, 452, 462-465, 467-468, 474-475, 486, 490, 493, 497-498, 502-503, 505, 507-512, 514-522, 528, 534, 537-538, 542, 554-557, 560-561, 564, 567, 572-574, 576-577, 581, 644-645, 648, 650, 653-655, 658, 664, 666, 668, 679-681, 683, 706, 710-711, 714, 716, 724, 731, 738, 743-747, 752, 763-766, 768, 778-782, 784, 787, 799, 802, 809-810, 837, 840, 843, 853, 864, 867, 870, 886, 888-894, 897, 900-906, 908-909, 911, 914-917, 919-921, 923-924, 926-930, 934, 939, 942, 948-949, 966-967, 975, 991, 1000, 1008-1009, 1011, 1018, 1024, 1032-1033, 1039, 1041, 1044, 1046, 1081-1087, 1090, 1093-1095, 1122, 1124, 1127, 1154-1156, 1168, 1173, 1175-1176, 1187, 1189-1190, 1192, 1232, 1261-1262, 1266, 1278, 1291-1293, 1296, 1299-1302, 1307-1308, 1312-1314, 1319-1320, 1329, 1331, 1337-1338, 1342, 1349, 1352, 1354-1355, 1357-1358, 1361-1362, 1368-1369, 1372-1374, 1378, 1381, 1385, 1388, 1390, 1393, 1395-1397, 1404, 1409-1410, 1414, 1421-1422, 1430-1431, 1434, 1444, 1446, 1453, 1456, 1460, 1462-1463, 1466, 1475, 1478, 1480, 1482-1483, 1509, 1511-1512, 1527, 1529, 1532-1535, 2000-2001, 2004-2005, 2007, 2011-2012, 2054, 2061, 2063, 2069, 2071, 2087-2088, 2104, 2109, 2113-2114, 2117, 2122-2124, 2143, 2146, 2152, 2155, 2157-2158, 2161, 2163, 2166, 2174, 2179, 2195, 2210, 2213, 2228, 2230, 2238, 2241, 2244, 2283-2286, 2288, 2292, 2296, 2302, 2305, 2309, 2327, 2334, 2347, 2349, 2353, 2368, 2374-2376, 2381-2382, 2384, 2387, 2392, 2394, 2396-2397, 2401-2403, 2407, 2409, 2411-2412, 2414-2415, 2419, 2421, 2423, 2425, 2438, 2462, 2474, 2489, 2514, 2516, 2520, 2524, 2526, 2532