12127 Mariner SPARK PLUG

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 must be administered as soon as possible. When reporting the repair, use "PI3080" as the Part Number, "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description Code. Exception: If the repair is done after failure, use "PI3080" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.
Refer to your Warranty Bulletin for detailed information with regard to Product Improvement Programs.
This Revised Service Letter replaces the January 17, 1998 Service Letter. Changes have been made to the Action Required.
Completion Date
July 31, 1998Termination Date
January 31, 1999Problem
Some 3412 Engines with the deep sump oil pan were shipped with the wrong oil dipstick. The wrong dipstick indicates only 19 gallons. The correct dipstick indicates 36.5 gallons of oil.
Affected Product
Model & Identification Number
3412C (9BR00550-00576)
3412 (81Z15501, 81Z15506, 81Z15535, 81Z15549, 81Z15799, 81Z15817, 81Z15822, 81Z15823 , 81Z15843, 81Z15845, 81Z15884, 81Z15886, 81Z15887, 81Z15995, 81Z16061 , 81Z16190, 81Z16196, 81Z16240, 81Z16306, 81Z16324, 81Z16327, 81Z16378 , 81Z16379, 81Z16442, 81Z16446, 81Z16451, 81Z16453, 81Z16504, 81Z16506 , 81Z16511, 81Z16542, 81Z16543, 81Z16551, 81Z16553, 81Z16605, 81Z16620 , 81Z16645, 81Z16683, 81Z16687, 81Z16713, 81Z16715-16718, 81Z16751 , 81Z16830, 81Z16851, 81Z16926, 81Z16935, 81Z16984, 81Z17052, 81Z17071 , 81Z17075, 81Z17076, 81Z17078, 81Z17129, 81Z17155, 81Z17173, 81Z17174 , 81Z17193, 81Z17201, 81Z17217, 81Z17258, 81Z17266, 81Z17268, 81Z17273 , 81Z17407, 81Z17409, 81Z17515, 81Z17519, 81Z17591, 81Z17659, 81Z17739 , 81Z17742, 81Z17787, 81Z17798, 81Z17802, 81Z17855, 81Z17888, 81Z17901 , 81Z17902, 81Z17968, 81Z18022, 81Z18025, 81Z18049, 81Z18072, 81Z18177 , 81Z18190, 81Z18208, 81Z18209, 81Z18229, 81Z18248, 81Z18301, 81Z18395 , 81Z18400, 81Z18455, 81Z18475, 81Z18477, 81Z18493, 81Z18506, 81Z18871 , 81Z18899, 81Z18917, 81Z18973, 81Z18974, 81Z18994, 81Z19000, 81Z19002 , 81Z19011, 81Z19015, 81Z19025, 81Z19071, 81Z19076, 81Z19098, 81Z19105 , 81Z19109, 81Z19113, 81Z19154, 81Z19169, 81Z19230, 81Z19233, 81Z19236 , 81Z19320, 81Z19329, 81Z19331, 81Z19390, 81Z19400, 81Z19404, 81Z19449 , 81Z19490, 81Z19535, 81Z19542, 81Z19550, 81Z19552, 81Z19557, 81Z19584 , 81Z19649, 81Z19655, 81Z19694, 81Z19704, 81Z19706, 81Z19715, 81Z19729 , 81Z19778, 81Z19781, 81Z19791, 81Z19797, 81Z19811, 81Z19818, 81Z19827 , 81Z19830, 81Z19912, 81Z19978, 81Z19980, 81Z19983, 81Z19985, 81Z19987-19989 , 81Z19994, 81Z20005, 81Z20013, 81Z20018, 81Z20034, 81Z20064 , 81Z20098, 81Z20138, 81Z20143, 81Z20145, 81Z20152, 81Z20208, 81Z20232 , 81Z20238, 81Z20253, 81Z20261, 81Z20263, 81Z20265, 81Z20266, 81Z20327 , 81Z20339, 81Z20342, 81Z20347, 81Z20428, 81Z20436, 81Z20449, 81Z20474 , 81Z20513, 81Z20518, 81Z20548, 81Z20551, 81Z20554, 81Z20555, 81Z20609 , 81Z20611, 81Z20647, 81Z20653, 81Z20662, 81Z20746, 81Z20802, 81Z20849 , 81Z20866, 81Z20869, 81Z20871, 81Z20873, 81Z20875, 81Z21001, 81Z21021 , 81Z21023, 81Z21046, 81Z21173, 81Z21220, 81Z21225, 81Z21231, 81Z21234 , 81Z21236, 81Z21238, 81Z21253, 81Z21259, 81Z21261, 81Z21271, 81Z21275 , 81Z21280, 81Z21282, 81Z21284, 81Z21293, 81Z21341, 81Z21354, 81Z21357 , 81Z21360, 81Z21383, 81Z21390, 81Z21397, 81Z21400, 81Z21417, 81Z21432 , 81Z21496, 81Z21564, 81Z21572, 81Z21580, 81Z21590, 81Z21593, 81Z21595 , 81Z21602, 81Z21611, 81Z21620, 81Z21647, 81Z21652, 81Z21662, 81Z21663 , 81Z21667, 81Z21671, 81Z21697, 81Z21705, 81Z21715, 81Z21744, 81Z21750 , 81Z21763, 81Z21769, 81Z21779, 81Z21782)
Parts Needed
1 - 4P0841 Gage Assembly17.5 Gallons of Oil Maximum (As Required)Action Required
Remove the 2W9202 Dipstick and install the 4P0841 Dipstick.
Check the oil and bring it up to the full mark, if needed.
This is only for certain arrangement numbers 9Y1473-6, 1316204, 1315410, 1501177-82.
Owner Notification
U.S. and Canadian owners will receive the attached Owner Notification.
Service Claim Allowances
This is a 1-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.
Attach.(1-Owner Notification)Copy Of Owner Notification For U.S. And Canadian Owners