PRODUCT SUPPORT PROGRAM FOR REWORKING THE BOOM LOWERING CHECK VALVE (BLCV) ON CERTAIN 320C, 322C, 325C, 330C, 330CL, 345BL SERIES II EXCAVATORS AND M325C MATERIAL HANDLERS
Usage:
REBE1173-00
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| 21Nov2006 |
U-749
A-716
O-730
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| After Failure Only | PRODUCT SUPPORT PROGRAM FOR REWORKING THE BOOM LOWERING CHECK VALVE (BLCV) ON CERTAIN 320C, 322C, 325C, 330C, 330CL, 345BL SERIES II EXCAVATORS AND M325C MATERIAL HANDLERS |
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| 5127 5067 5117 5147 5811 5456 | PS51248 |
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| NOTE: | 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 "PS51248" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code. |
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| NOTE: | 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. |
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TERMINATION DATE |
| 30Nov2008 |
PROBLEM
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| The existing boom lowering control valve (BLCV) may fail on certain Excavators and Material Handlers. The existing 233-0759 BLCV for 320C to 325C, the 196-8731 and 263-9982 BLCV for 330C, the 156-0844 BLCV for 345B Series II, and the 269-5475 BLCV for M325C Material Handlers need to be reworked. The BLCV are not working properly in boom down movement due to mainly seizing, sticking or drifting caused by the 156-0975 Guide Assembly loosening problem inside the BLCV. In order to resolve the problem, additional threads have been applied on the guide assembly. |
AFFECTED PRODUCT
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| Model | Identification Number |
| 320C | AXK00108-00119, 121-135, 138-141, 149-213, 215-235, 237-238, 240-258, 260-262, 264-267, 272-298, 302-306, 308-346 BMZ00155-00263 DBG00554, 560-563, 565, 567-568, 571, 588, 594-595, 604-605, 610, 613, 616-619, 621, 623-625, 627, 630, 632, 636, 639, 644, 646-647, 657-658, 667, 673-676, 678-680, 682, 684, 692, 696, 699-700, 702, 707, 711, 721 EGA00301-00311 EGL00277-00345, 347-351, 353-413, 415-418, 420-443, 445-446, 448-659 GLA01659, 1661-1662, 1664-1669, 1671, 1673-1674, 1676-1678, 1681-1685, 1687, 1689-1695, 1697-1698, 1701-1709, 1711, 1714-1715, 1717, 1719-1721, 1723, 1725-1726, 1728-1730, 1733, 1737, 1741-1747, 1749, 1751-1752, 1754-1755, 1757-1762, 1765, 1767, 1769, 1771, 1773, 1775-1776, 1780-1784, 1786, 1788-1794, 1796-1800, 1804-1806, 1808-1813, 1815-1817, 1819-1826, 1828-1829, 1831-1833, 1835-1837, 1840-1841, 1843-1844, 1846, 1848, 1850-1856, 1858-1863, 1865-1869, 1871-1883, 1886-1895, 1902-1905, 1909-1911, 1915-1920, 1922, 1927, 1930-1934, 1936-1937, 1939, 1948, 1958-1959, 1961-1962, 1964-1966, 1970-1975, 1977, 1981, 1984, 1986, 1988-1989, 1991, 1993-1998, 2000, 2003-2010, 2014-2022, 2024, 2026-2034, 2036, 2038-2039, 2042-2047, 2049-2057, 2059-2060, 2062-2070, 2072, 2074-2075, 2077-2078, 2082-2095, 2098-2099, 2101, 2105-2108, 2110-2112, 2114-2116, 2123, 2125-2173, 2175-2177, 2179-2183, 2185-2190, 2193, 2195-2196, 2199-2201, 2203, 2205-2210, 2212, 2214-2216, 2219-2222, 2224-2226, 2228, 2230-2239, 2241-2242, 2245-2249, 2251-2257, 2259-2264, 2266, 2268-2283, 2286-2287, 2289-2300, 2302-2307, 2309, 2311, 2314, 2316-2318, 2321-2323, 2326, 2328, 2331-2333, 2337, 2339, 2343, 2346, 2349-2352, 2354-2358, 2363, 2365, 2367, 2373, 2379-2381, 2383-2384, 2387-2388, 2394-2398, 2400-2401, 2407, 2411-2412, 2416-2418, 2421, 2424, 2427-2428, 2432-2438 JTG00863-00869, 871-872, 874-876, 878-886, 888-901, 903-909, 912-914, 917, 919-920, 922-938, 941-946, 948-975, 977-979, 981-992, 994-995, 997-1008, 1012-1016 |
| 322C | EMR00176-00189, 191-242, 244-246, 248-259, 265-281, 283-290, 292-298, 300-303, 307-324, 326-341, 345-351, 353, 355-382, 384-385, 387-404, 407-435, 438-455, 457, 460-474, 476-511, 514-532, 534-560, 562-564, 566, 569 MAR00139-00150, 152, 154-163, 166-167, 169-171, 174, 178, 183-184, 191-192, 194-206, 210, 212-213, 215, 218-219, 221, 223-224, 228, 232, 238-239, 241-246, 250-251, 255-260, 262-263, 266, 269, 271-275, 277, 279, 281-283, 285-289, 291-294, 296-298, 300-302, 305, 308-309, 313, 315-316, 320, 322, 330-333, 335-340, 343, 354, 356, 360-361, 363, 365, 370-380, 382, 386-389, 391-396, 398, 400-401, 405, 410-414, 416-417, 420, 422, 424-427, 433, 440, 445, 457-460, 462-463, 465, 467, 470, 474, 476-480, 486, 488, 497, 501, 503, 515, 517-518, 524 |
| 325C | BFE00115 CRB00602-00605, 607-617, 619-620, 622-623, 625-634, 637-643, 645-649, 654-667, 669-671, 673, 675-677, 680-681, 683-684, 686-687, 691, 693, 695-696, 700-710, 712-715, 717-728, 730-738, 743-744, 746-747, 752, 755-756, 762-765, 777, 801, 813, 829, 832, 843, 852, 854-855, 857, 868, 872, 880, 883, 906, 908, 910-912, 921, 924, 930, 934, 941, 954-955, 977, 984-985, 990, 996, 1004, 1013, 1028-1030, 1041, 1054, 1056, 1060, 1062, 1068-1071, 1075, 1077, 1082, 1084, 1093, 1099, 1102, 1104-1105, 1108-1111, 1113-1119, 1121-1122, 1127-1128, 1130-1132, 1134, 1136, 1145-1146, 1149-1150, 1153, 1155-1156, 1158-1160, 1163-1167, 1169, 1172, 1175-1176, 1178-1180, 1182-1191, 1193, 1196-1197, 1200-1201, 1203, 1205, 1207, 1210, 1212-1216, 1218, 1222, 1224-1236, 1238-1242, 1244, 1249, 1253-1256, 1259-1260, 1263-1264, 1266-1267, 1274, 1286-1287, 1303, 1313, 1321, 1332, 1337-1338, 1342-1343, 1345, 1347, 1349, 1352, 1358-1359, 1365-1367, 1371, 1373-1374, 1376, 1384, 1387, 1389, 1399, 1407, 1411, 1417, 1419, 1422, 1427, 1448, 1465, 1467, 1498, 1500, 1508, 1511, 1514, 1534-1535, 1548, 1551, 1578, 1586, 1588-1589, 1597, 1603-1604, 1606, 1615, 1620, 1622, 1625, 1631-1632, 1638, 1640, 1643-1644, 1647, 1652, 1657, 1659, 1664-1665, 1668, 1672-1673, 1688-1689, 1691, 1695, 1697-1698, 1701, 1705-1709, 1711, 1713, 1717-1721, 1724, 1726, 1731-1732, 1737-1739, 1744 CSJ00702-00707, 709-717, 720-750, 752-775, 777-778, 780-792, 794-795, 797-838, 840, 843, 845-863, 865, 868-876, 878-880, 884-885, 887-888, 890-891, 893, 895-898, 900-911, 913-914, 916-935, 937-949, 951-960, 962-971, 973-981, 983-1034, 1036-1048, 1050-1058, 1061-1067, 1069-1073, 1075-1078, 1080-1100, 1102-1103, 1105, 1107-1111, 1113-1129, 1131, 1133-1136, 1138-1139, 1141-1144, 1146-1149, 1151-1155, 1158-1169, 1171-1173, 1175, 1177, 1179-1189, 1191, 1193, 1196-1205, 1207, 1209-1212, 1214, 1216-1221, 1223-1232, 1234-1237, 1239-1251, 1253, 1256-1257, 1260-1261, 1263-1266, 1268-1271, 1273-1274, 1276, 1278-1280, 1282-1286, 1289-1296, 1298-1300, 1302-1370, 1372-1410, 1412-1413, 1415, 1417-1444, 1446-1470, 1473-1479, 1482-1504, 1507-1513, 1516, 1518-1520, 1523-1526, 1528-1537, 1539-1543 DTF00274-00285, 287 JLC00285-00301, 303-312 JLD00310-00321, 325, 330, 334-346, 351-354 |
| 330C | CAP00175, 177, 180-185, 191-196, 199-200, 204-208, 210-211, 213-217, 222-227, 234-238, 244-246, 267, 272, 285-294, 299-302, 336-340, 343-346, 348, 350-356, 359-378, 415-418, 429-433, 436-437, 441, 454-461, 469-472, 475-518, 520-524, 527-533, 535-537, 539-542, 544-548, 560, 562-563, 565, 567, 569-576, 580, 582-585, 588, 592-593, 596, 600, 602-604, 611-612, 615-616, 618, 621-622, 624, 626-628, 630-632, 634, 638, 640, 642, 648, 650-652, 655-658, 669, 672-673, 675, 678-683, 685-689, 692, 705, 711, 728, 730-731, 733-734, 737, 743-744, 785-789, 792-793, 796, 799-806, 814-817, 819-830, 857, 859-863, 866-869, 871-884, 891-893, 897-898, 900-909, 912-913, 916-917, 920-928, 933-935, 937-940, 944-946, 949, 952, 954-956, 958, 965-966, 976, 978-979, 981-985, 988, 990, 1001, 1004-1005, 1011, 1016, 1019-1021, 1024-1025, 1028, 1030, 1035, 1037, 1039-1041, 1045, 1047, 1049-1054, 1056, 1060-1063, 1068, 1094, 1098, 1109, 1113, 1118-1120, 1122-1123, 1125-1126, 1131-1134, 1139, 1141, 1162, 1165, 1175-1177, 1182, 1188, 1195-1198, 1203, 1210, 1233, 1235, 1237-1238, 1241, 1243-1244, 1248, 1250-1252, 1254-1256, 1258, 1261-1262, 1268, 1270-1272, 1275, 1279, 1283, 1287, 1292, 1295-1296, 1300, 1305, 1318-1325, 1327, 1356, 1365-1367, 1369, 1383, 1389, 1391, 1395, 1397-1403, 1405-1406, 1411, 1413, 1416, 1419-1424, 1426, 1430, 1432, 1434-1435, 1437, 1439-1440, 1442, 1444-1446, 1449-1450, 1456-1458, 1460, 1469-1473, 1475-1476, 1483, 1486, 1496-1497, 1501-1502, 1504, 1506-1508, 1518-1524, 1526, 1532-1533, 1539, 1547, 1550, 1557, 1561-1562, 1571, 1573-1574, 1577-1580, 1583, 1593-1594, 1596, 1598, 1619-1620, 1623, 1626-1629, 1634, 1636, 1638-1641, 1644-1646, 1650-1658, 1660-1661, 1663, 1665, 1667-1668, 1670, 1673, 1675-1676, 1683-1685, 1690-1691, 1695-1697, 1699-1700, 1702, 1704-1708, 1711-1713, 1715-1716, 1720-1728, 1730-1735, 1737-1740, 1742, 1744-1747, 1749-1753, 1755-1761, 1764-1766, 1768, 1770-1771, 1773-1774, 1776-1779, 1781-1783, 1785-1788, 1794-1799, 1804-1805, 1811-1813, 1815, 1817, 1819, 1821-1825, 1827, 1829, 1831-1837, 1845-1848, 1850, 1852, 1854-1858, 1861-1867, 1869, 1878-1879, 1885-1886, 1888, 1895, 1897, 1899, 1903-1904, 1909, 1911, 1913, 1915-1916, 1926, 1934, 1944, 1947, 1955, 1957, 1959, 1963, 1969, 1971, 1975-1976, 1979, 1982-1983, 1989, 1994-1996, 1999, 2001, 2008-2009, 2013, 2015, 2019-2020, 2032-2033, 2035-2039, 2055, 2057, 2062-2064, 2071, 2080-2082, 2086-2088, 2091, 2093, 2095-2096, 2099-2100, 2103, 2105, 2107, 2110, 2113, 2116-2117, 2120, 2122, 2125, 2128, 2131, 2133-2134, 2136, 2142, 2149-2150, 2152-2153, 2158, 2162-2164, 2166, 2170, 2172, 2174-2176, 2178-2180, 2183-2184, 2187, 2189, 2193, 2197-2199, 2206, 2211, 2219, 2221, 2223 CGZ00103-00104, 108-110, 114-193, 196-203, 206-231, 233-376, 378-437, 439-446, 448-492, 494-524, 526-678, 680-728, 730-790, 792-811, 813-824, 827-859, 862-867, 869-901, 903-917, 919-944, 947-974, 976-978 JCD00259-00277, 280-282, 285-287, 289-290, 292-344, 347-354, 356, 359, 364, 366-368, 370, 372-373 MKM00296-00317 |
| 330CL | JNK00186, 188-212, 214-223, 225-273, 275, 278-280, 282-283, 286, 288-289, 291, 293, 295, 298-302, 304, 307, 314-317, 319-320, 322-325, 327-328, 331-334, 336-337, 339, 341, 350-353 |
| 345BL II | CCC00247, 300-356, 358-362, 364-373, 375-386, 388, 390-405, 407, 410-422, 424-436, 438-443, 445-455, 457-458, 460-464, 466-507, 509-527, 529-558, 560-566, 568-573, 575-589, 591-604, 606-656, 658-685, 687-709, 711-745, 747-772, 774-784, 786-801, 803, 805-811, 813-822, 824-836, 838-879, 881-885, 887-895, 897-904, 906-939, 941-955, 957-983, 985-999, 1001-1013, 1015-1073, 1075-1091, 1093-1130, 1133-1140, 1142-1169, 1171-1195, 1197-1213, 1215-1224, 1226-1239, 1241-1247, 1249-1264, 1266-1267, 1269-1273, 1275-1295, 1297-1331, 1333-1342, 1344-1355, 1357-1361, 1363, 1365-1368, 1370-1371 CDJ00185-00187, 200-201 FEE00222-00302 |
| M325C MH | PAN00243-00343 XJA00202-00292 |
PARTS NEEDED
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Qty |
Part Number | Description |
| 2 | 1227797 | RING |
| 2 | 2930653 | VALVE GP-BASIC |
| 2 | 3J1907 | SEAL-O-RING |
| 2 | 6V5326 | SEAL-O RING |
ACTION REQUIRED
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| See the attached Rework Procedure. |
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SERVICE CLAIM ALLOWANCES
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0-30 mo |
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31-60 mo |
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| NOTE: This is a 4.0-hour job | ||||||
| Maximum 2 hours is allowed for each BLCV. |
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PARTS DISPOSITION
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| Handle the parts in accordance with your Warranty Bulletin on warranty parts handling. |
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| Safety operations before BLCV's rework procedure: I) Place the machine on flat level ground. II) Stop the engine. III) Turn the main disconnect switch to the "0" position. IV) Release the pressure in all hydraulic circuit. Refer to Testing and Adjusting, section "Hydraulic System Pressure - Release" in the Service Manual. |
| The below procedure is explaining the rework for 1 BLCV only. 1) Remove the 222-3347 Valve Group from the BLCV. Be carefull to not loose the pin inside this valve group basic. Picture 1.2.1 is showing the 222-3347 Valve Group section with the pin. |
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| Image1.2.1 |
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| Image1.2.2 |
| 2) With a magnet pen tool, remove the piston and the shims from the internal cavity. Be carefull to not loose the shims. |
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| Image1.3.1 |
| 3) With a magnet pen tool, remove the pin from the guide assembly. |
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| Image1.4.1 |
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| Image1.4.2 |
| 4) With an allen key wrench for internal hexagonal 1/4 inch dimension, dis-assemble the guide from the BLCV body. |
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| Image1.5.1 |
| 5)Assemble a new 3J-1907 Seal-O-Ring on the new 293-0653 Guide Assembly as illustrated on picture. The new 293-0653 Guide Assembly is manufactured with more threads. |
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| Image1.6.1 |
| 6) Assemble the new guide in the BLCV and tighten to a torque of 35 +/- 4 Nm. |
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| Image1.7.1 |
| 7) Assemble the new pin from 293-0653 Guide Assembly with pin groove orientation in accordance with the picture below. |
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| Image1.8.1 |
| 8)Install the shims into the piston between the pin from 293-0653 Guide Assembly and the piston. 9)Replace the old 7M-8484 Seal-O-Ring by a new one into the 222-3347 Valve Group basic. 10)Replace the old 122-7797 Ring by a new one into the 222-3347 Valve Group basic. 11)Check presence of 222-3344 Valve Group basic pin. If not, re-assemble properly. 12)Re-assemble the complete 222-3347 Valve Group basic and tighten to a torque of 215 +/- 25 Nm on the BLCV body. |
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| Image1.9.1 |
| 13)Turn the main disconnect switch to the "1" position and start the engine. 14)Slowly move the joystick to the Boom Up in order to raise boom 1m above the ground and then lower it slowly. 15)Repeat this operation 10 times in order to purge the air. |
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