PSP FOR INCORRECTLY ADJUSTED AIR FUEL RATIO CONTROL ON CERTAIN 3208 TRUCK ENGINES - MAILED US AND CANADA, TRUCK TEPS
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PSP FOR INCORRECTLY ADJUSTED AIR FUEL RATIO CONTROL ON CERTAIN 3208 TRUCK ENGINES - MAILED US AND CANADA, TRUCK TEPS
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.
U-64 TT-4 1278 PS4231 NOTE: 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 "PS4231" as Part Number and "7755" as Group Number.
Termination Date
April 30, 1989
Problem
The air fuel ratio control on certain 3208 Truck Engines may have been incorrectly adjusted.
Affected Product
Model Identification Number 3208 2Z36385, 36445, 38473, 38521, 38572, 38623, 38624, 38676, 38729, 38766, 38808, 38848, 38889, 38897, 38918, 38979, 39041, 39134, 39174, 39175, 39225, 39277, 39332, 39333, 39368, 39369, 39379, 39380, 39403, 39413, 39440, 39441, 39450, 39509, 39571, 39602, 39640, 39693, 39741, 39788, 39834, 39920, 40016, 40069, 40114, 40124, 40132, 40138, 40144, 40157, 40165, 40170, 40175, 40179, 40183, 40200, 40209, 40216, 40221, 40224, 40227, 40241, 40269, 40327, 40330, 40342, 40349, 40363, 40374, 40404, 40419, 40443, 40450, 40453, 40465, 40473, 40498, 40544, 40597, 40606, 40648, 40702, 40713, 40752, 40753, 40755, 40758, 40759, 40768, 40771, 40776, 40779, 40794, 40795, 40798-40800, 40812, 40813, 40823, 40824, 40831, 40832, 40848, 40849, 40851, 40854, 40857, 40866, 40869, 40872, 40875, 40877, 40889, 40901, 40902, 40904, 40907, 40909, 40918, 40921, 40924, 40927, 40929, 40932, 40944, 40953, 40964, 40971, 40985, 40993, 41006, 41007, 41010, 41012, 41023, 41058, 41059, 41061, 41065, 41066, 41068, 41075, 41078, 41083, 41106, 41107, 41109, 41112, 41114, 41119, 41124, 41128, 41155, 41157, 41158, 41161-41163, 41168, 41171, 41174, 41178, 41182, 41206, 41207, 41209, 41210, 41217, 41218, 41225, 41226, 41231, 41232, 41236, 41239, 41242, 41245, 41248, 41250, 41252, 41254, 41256, 41258, 41260, 41262, 41264, 41266, 41274, 41275, 41277, 41282, 41286, 41292, 41296, 41298, 41300, 41319, 41320, 41322, 41325, 41326, 41332, 41335, 41336, 41340, 41343, 41346, 41349, 41351, 41370, 41372, 41375, 41376, 41382, 41384, 41387, 41388, 41393, 41395, 41398, 41403, 41406, 41410, 41420-41422, 41424, 41427-41429, 41432, 41434, 41437, 41440, 41443, 41447, 41450, 41451, 41454, 41470, 41472, 41475, 41479, 41482, 41483, 41487, 41490, 41493, 41496, 41498, 41507, 41518, 41520, 41524, 41525, 41531, 41533, 41536, 41537, 41539, 41540, 41544, 41545, 41549, 41550, 41554, 41565, 41570, 41571, 41573, 41576, 41583-41585, 41588, 41592, 41593, 41597, 41598, 41601, 41602, 41605, 41608, 41622, 41624, 41627, 41635, 41640, 41645, 41646, 41649, 41677, 41679, 41688, 41727, 41744, 41770-41773, 41797, 41798, 41808, 41809, 41816, 41822, 41824, 41841, 41854, 41855, 41857, 41868, 41876, 41882, 41905, 41909, 41910, 41911, 41920, 41921, 41924, 41927, 41932, 41934, 41937, 41963, 41965-41967, 41972, 41975, 41977, 41982, 41989, 42001-42004, 42008, 42012-42015, 42017, 42020, 42021, 42024, 42027, 42031, 42034, 42043, 42046, 42048, 42056-42059, 42060, 42067-42069, 42074, 42075, 42079, 42086, 42087, 42091, 42099, 42100, 42103, 42107, 42112, 42113, 42115, 42122-42124, 42129, 42133, 42136, 42147, 42152, 42153, 42167 -42171, 42180-42182, 42188, 42189, 42200, 42204, 42207, 42213-42215, 42218, 42222, 42227-42229, 42231, 42237, 42246, 42261, 42265, 42267, 42269, 42273, 42277-42279, 42281, 42284, 42288-42290, 42297, 42304, 42309, 42313, 42317, 42321, 42326-42329, 42331, 42334, 42335, 42339, 42340, 42341, 42343-42345, 42349, 42350, 42351, 42353, 42354, 42360, 42361, 42366, 42367, 42372, 42373, 42376, 42379, 42381, 42385, 42387, 42390, 42391, 42393, 42397, 42401, 42402, 42404, 42412, 42414, 42418, 42421, 42422, 42424, 42427, 42433, 42439, 42444, 42448, 42452, 42457, 42458, 42461, 42469, 42470, 42473, 42480, 42481, 42484, 42492, 42516, 42524, 42525, 42528, 42536, 42537, 42540, 42548, 42549, 42551, 42559, 42561, 42581, 42584, 42592, 42594, 42599, 42604, 42608, 42610, 42612, 42616, 42619, 42629, 42630, 42632, 42633, 42638, 42667, 42670, 42672, 42673, 42677, 42678, 42682, 42683, 42685, 42686, 42688, 42689, 42691, 42692, 42694, 42695, 42697, 42698, 42700, 42701, 42703, 42704, 42706, 42707, 42709-42712, 42715, 42719, 42724, 42727, 42728, 42732, 42733, 42736, 42740, 42743, 42746, 42750, 42752, 42755, 42757, 42758, 42762, 42776, 42777, 42787, 42788, 42793, 42794, 42799, 42804, 42805, 42809, 42810, 42814, 42815, 42817, 42818, 42820, 42821-42829, 42895, 42898, 42905-42907, 42909, 42915, 42921-42923, 42933, 42937, 42939, 42945
Parts Needed
1 - 6L5766 Gasket
Action Required
Adjust the air fuel ratio control to 2.85 mm as follows: Remove the three bolts that hold the air fuel ratio control valve in place. Rotate the cover counterclockwise 120 deg. and install the bolts. Seal the control valve. After the air fuel ratio control has been adjusted stamp "8A" on the front cover.
Service Claim Allowances
Product Caterpillar Dealer Suggested Customer Suggested smu/age Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs. whichever (C/L) (Cost) (C/L) (Sell) comes first 0-100,000 100% 1 0 0 0 0 0-12 mo NOTE: This is a 1-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Caterpillar Information System:
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