9687 Mercruiser PISTON AND PISTON PIN (.030 O.S.)

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 Program can be administered either before or after a failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS4357" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.
This Revised Service Letter replaces the June 21, 1998 Service Letter. Changes have been made to the Affected Product.
Termination Date
June 30, 1999Problem
Some 1182070 GSC+ (Generator Set Control+) Modules, change level 08 or earlier, used in the EMCP II+ control panels may have a microprocessor interupt which may result in shutting down the generator set. No fault code is logged for this problem. Improved software needs to be installed using the Caterpillar "ET" Service Tool.
Affected Product
Model & Identification Number
3208 (5YF3418, 5YF3419, 5YF3522, 5YF3524-3525, 5YF3729, 30A6801-6802, 30A7031, 30A7081, 30A7096, 30A7098, 30A7100-7101, 30A7142-7143)
3304 (83Z10194, 83Z10238, 83Z10244, 83Z10246, 83Z10284, 83Z10614)
3306B (9NR1614-1615, 9NR1619-1620, 9NR1622, 9NR1647, 9NR1651, 9NR1699, 9NR1730-1731, 9NR1852, 9NR1875, 9NR1909, 9NR1915, 9NR1926, 9NR1930, 9NR1935, 9NR1938-1939, 9NR1943, 9NR1951, 9NR2004, 9NR2006-2007, 9NR2009, 9NR2011, 9NR2027, 9NR2038-2039, 9NR2089, 9NR2106, 9NR2108, 9NR2158, 9NR2170, 9NR2174, 9NR2180, 9NR2216, 9NR2225, 9NR2310, 9NR2345, 9NR2354, 9NR2382, 9NR2396, 9NR2412, 9NR2421, 9NR2423-2324, 9NR2453, 9NR2456, 9NR2465, 9NR2489, 9NR2523, 9NR2529, 9NR2530-2533, 9NR2535-2536, 9NR2542, 9NR2586, 9DS388, 9DS418, 9DS433, 9DS458, 9DS471, 9DS504, 9DS506, 9DS511, 9DS526, 9DS535-536, 9DS568, 9DS695, 9DS726, 9DS739, 9DS753, 9DS756, 9DS778, 9DS785, 9DS839, 9DS841-843, 9DS849, 9DS851, 9DS875,9DS878, 1CZ189, 1CZ207, 1CZ248, 1CZ271, 1CZ303, 1CZ316, 1CZ400, 1CZ414-415, 1CZ434, 1CZ446, 1CZ467, 1CZ605, 1CZ608, 1CZ729, 1CZ735, 1CZ739-740, 1CZ933, 1CZ974)
3406C (4ZR2056-2058, 4ZR2126, 4ZR2300, 4ZR2302, 4ZR2323, 4ZR2346, 4ZR2351, 4ZR2354, 4ZR2356, 4ZR2375, 4ZR2405, 4ZR2416, 4ZR2418, 4ZR2436, 4ZR2441, 4ZR2443, 4ZR2447-2449, 4ZR2452, 4ZR2454, 4ZR2467, 4ZR2475-2476, 4ZR2499, 4ZR2503-2504, 4ZR2512-2514, 4ZR2526-2528, 4ZR2652, 4ZR2716, 4ZR2722-2723, 4ZR2736, 4ZR2792, 4ZR2809, 4ZR2817, 4ZR2819, 4ZR2823-2824, 4ZR2826-2827, 4ZR2836, 4ZR2842, 4ZR2846, 4ZR2855, 4ZR2859, 4ZR2877-2878, 4ZR2880-2881, 4ZR2892, 4ZR2916, 4ZR2951, 4ZR2955, 4ZR2964, 4ZR2997, 4ZR3024, 4ZR3060, 4ZR3080, 4ZR3090, 4ZR3105, 4ZR3120, 4ZR3130, 4ZR3138, 4ZR3145, 4ZR3158, 4ZR3188, 4ZR3212, 4ZR3221, 4ZR3232, 4ZR3234, 4ZR3241, 4ZR3246, 4ZR3251-3252, 4ZR3257, 4ZR3324, 4ZR3330, 4ZR3356, 4ZR3376, 4ZR3442-3443, 4ZR3457, 4ZR3475-3476, 4ZR3484-3486, 4ZR3490-3492, 4ZR3494-3497, 4ZR3514, 4ZR3547, 4ZR3550, 4ZR3560, 4ZR3606, 4ZR3611, 4ZR3615, 4ZR3623, 4ZR3637-3641, 4ZR3653, 4ZR3660, 4ZR3683, 4ZR3686, 4ZR3708, 1LS390, 1LS409-411, 1LS413-418, 1LS450-455, 1LS470, 1LS541, 1LS543-550, 8FS536, 8FS568, 8FS573, 8FS577, 8FS593, 8FS647, 8FS678, 8FS694, 8FS702, 8FS752, 8FS790, 8FS792, 8FS795, 8FS847, 8FS850, 8FS853-854, 8FS876, 8FS882, 8FS886, 8FS902, 8FS904, 8FS940, 8FS942, 8FS951, 8FS978, 8FS1011, 8FS1018, 8FS1026, 1DZ106-107, 1DZ152, 1DZ186, 1DZ196, 1DZ209, 1DZ211, 1DZ222, 1DZ239, 1DZ257, 1DZ266, 1DZ268, 1DZ315, 1DZ318, 1DZ427, 1DZ435, 1DZ470, 1DZ476, 1DZ479, 1DZ503, 1DZ522, 1DZ524, 1DZ527, 1DZ532, 1DZ556, 1DZ572, 1DZ575, 1DZ588, 1DZ937)
3412 (2WJ1082-1083, 2WJ1103-1104, 2WJ1129-1130, 2WJ1133, 2WJ1160, 2WJ1244-1245, 2WJ1250-1255, 2WJ1257-1258, 2WJ1275, 2WJ1279, 2WJ1281-1282, 2WJ1307-1309, 2WJ1321, 2WJ1325, 2WJ1340, 2WJ1354-1359, 2WJ1366, 2WJ1371, 2WJ1380, 2WJ1389-1390, 2WJ1400, 2WJ1410, 2WJ1412, 2WJ1442, 2WJ1448-1449, 2WJ1463, 2WJ1469, 2WJ1472-1473, 2WJ1499, 2WJ1501, 2WJ1561, 2WJ1573, 2WJ1575-1578, 2WJ1581, 2WJ1583, 2WJ1587, 2WJ1592, 2WJ1594, 2WJ1597, 2WJ1606, 2WJ1621, 2WJ1629, 2WJ1632, 2WJ1641-1642, 2WJ1679, 2WJ1681, 2WJ1686, 2WJ1705, 1EZ218, 1EZ233, 1EZ245, 1EZ249, 1EZ263, 1EZ289, 1EZ409-410, 1EZ417, 3FZ319, 3FZ330, 3FZ351, 3FZ467, 3FZ536, 3FZ566, 81Z20413, 81Z20562, 81Z20617, 81Z20660, 81Z20688-20700, 81Z20705, 81Z20710, 81Z20714-20715, 81Z20720, 81Z20790, 81Z20796, 81Z20798, 81Z20807, 81Z20820, 81Z20829, 81Z20863, 81Z20880, 81Z20891, 81Z20913, 81Z20971, 81Z20974, 81Z21011, 81Z21025, 81Z21032, 81Z21075, 81Z21093-21094, 81Z21129, 81Z21151, 81Z21161, 81Z21168, 81Z21179, 81Z21191-21192, 81Z21208, 81Z21219, 81Z21227, 81Z21229, 81Z21232, 81Z21297, 81Z21404, 81Z21408, 81Z21412, 81Z21419, 81Z21441, 81Z21482-21483, 81Z21532, 81Z21538, 81Z21562, 81Z21567, 81Z21573, 81Z21581, 81Z21619, 81Z21621, 81Z21675, 81Z21679, 81Z21696, 81Z21699, 81Z21712, 81Z21714, 81Z21730, 81Z21734, 81Z21748, 81Z21792, 81Z21827, 81Z21837, 81Z21879, 81Z21887, 81Z21901, 81Z21912, 81Z21917, 81Z21919, 81Z21922, 81Z21926, 81Z21928, 81Z21931, 81Z21937, 81Z21940-21941, 81Z21946, 81Z21964, 81Z21979, 81Z21988-21991, 81Z22028, 81Z22051, 81Z22062, 81Z22069, 81Z22072, 81Z22078, 81Z22081, 81Z22097, 81Z22112, 81Z22116, 81Z22204, 81Z22206, 81Z22246, 81Z21964, 81Z21979, 81Z21988-21991, 81Z22028, 81Z22051, 81Z22062, 81Z22069, 81Z22072, 81Z22078, 81Z22081, 81Z22097, 81Z22112, 81Z22116, 81Z22204, 81Z22206, 81Z22246, 81Z22278, 81Z22306, 81Z22309, 81Z22321, 81Z22351, 81Z22368, 81Z22395, 81Z22425)
3508 (3LS197, 1JZ132, 23Z6877, 23Z6914, 23Z6934-6935, 23Z6942, 23Z6952, 23Z6978, 23Z6985, 23Z6996, 23Z6998, 23Z7000, 23Z7021, 23Z7043, 23Z7048-7050, 23Z7067, 23Z7069-7072, 23Z7074-7075, 23Z7079, 23Z7089-7090, 23Z7096, 23Z7102, 23Z7114-7114, 23Z7149, 23Z7151, 23Z7180, 23Z7188)
3508B (4GM225, 4GM278, 4GM284, 4GM298, 6PN373, 6PN400, 6PN404, 1FZ150, 1FZ215, 1FZ221, 1FZ252)
3512 (, 6PM29, 1KZ124, 1KZ127, 1KZ129, 1KZ136, 1KZ139, 1KZ152, 1KZ159, 1KZ219, 1KZ231, 24Z7772, 24Z7913, 24Z7922, 24Z7948, 24Z7960, 24Z7975, 24Z8020, 24Z8029, 24Z8083, 24Z8130, 24Z8133, 24Z8138, 24Z8145, 24Z8148-8149, 24Z8154, 24Z8157, 24Z8162, 24Z8180, 24Z8215, 24Z8287, 24Z8300, 24Z8309, 24Z8312, 24Z8326, 24Z8366, 24Z8391-8392, 24Z8396, 24Z8398-8399, 24Z8401, 24Z8404, 24Z8407, 24Z8415, 24Z8445-8447, 24Z8450, 24Z8457, 24Z8459, 24Z8465-8466, 24Z8471-8472, 24Z8474, 24Z8478, 24Z8481, 24Z8484, 24Z8492, 24Z8503, 24Z8508, 24Z8529, 24Z8535, 24Z8551-8552, 24Z8561-8562, 24Z8565, 24Z8570, 24Z8573, 24Z8581-8582, 24Z8584, 24Z8588, 24Z8592, 24Z8614, 24Z8624-8625, 24Z8636, 24Z8656, 24Z8672, 24Z8682, 24Z8705, 67Z1454-1456, 67Z1495, 67Z1499)
3512B (6WN147-148, 6WN152, 6WN163, 6WN177-178, 6WN183, 6WN195, 1GZ142-143, 1GZ207)
G3512 (7NJ300)
3516 (5SJ545, 5SJ552, 5SJ554, 5SJ560-561, 5SJ601-602, 5SJ605-606, 5SJ612, 3NS214, 4XF688-689, 4XF704-706, 4XF712, 4XF717, 4XF721, 4XF723, 4XF731, 4XF733, 25Z5530, 25Z5552, 25Z5588, 25Z5592-5593, 25Z5598, 25Z5625, 25Z5629-5630, 25Z5634, 25Z5636, 25Z5641-5642, 25Z5669, 25Z5682, 25Z5700-5701, 25Z5703, 25Z5705-5709, 25Z5718, 25Z5720, 25Z5726, 25Z5731, 25Z5747, 25Z5749, 25Z5751, 25Z5776, 25Z5813, 25Z5819, 25Z5821, 25Z5824, 25Z5827-5828, 25Z5832-5833, 25Z5837, 25Z5839, 25Z5841, 25Z5847, 25Z5858, 25Z5860, 25Z5867, 25Z5873, 25Z5879-5881, 25Z5899, 25Z5903, 25Z5907, 25Z5960, 25Z6002, 25Z6017, 25Z6028, 25Z6038, 73Z800-801, 73Z814, 73Z818, 73Z861-862, 73Z)
3516B (6HN160-161, 6HN173-174, 6HN185, 6HN193, 6HN209, 6HN216-217, 6HN219, 6HN224, 7RN516-517, 7RN522-524, 7RN531, 7RN552, 7RN559, 7RN566-568, 1HZ139)
Parts Needed
1 - 1527143 Cable Assembly (for use with service tool)1 - 1633348 Software GroupAction Required
See the attached rework procedure.
Service Claim Allowances
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Attach.(1-Rework Procedure)Rework Procedure
Tools Needed
7X1701 - Caterpillar Communication Adapter7X1425 - Cable Assembly (PC to Communication Adapter)7X1570 - Cable Assembly (1394166 Cable Assembly may be used)1527143 - GSC+ Data Adapter Cable (connects the Service Tool cable to EMCP II+ terminal strip using spades) - PC capable of running Caterpillar Electronic Technician (ET) software version 2.0 or later. Connections for GSC+ mounted in an EMCP II+ panel with 24VDC power available to the