PRODUCT IMPROVEMENT PROGRAM FOR REPLACING PLUGS ON CERTAIN 3114, 3116, 3126, AND 3126B ENGINES; 322C, 325C, 325C L MEDIUM EXCAVATORS; 938G II, 950G II, 962G II MEDIUM WHEEL LOADERS, 953C AND 963C TRACK LOADERS, D5N LGP, D5N XL, D6N LGP, D6N-XL, D6N X Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR REPLACING PLUGS ON CERTAIN 3114, 3116, 3126, AND 3126B ENGINES; 322C, 325C, 325C L MEDIUM EXCAVATORS; 938G II, 950G II, 962G II MEDIUM WHEEL LOADERS, 953C AND 963C TRACK LOADERS, D5N LGP, D5N XL, D6N LGP, D6N-XL, D6N X

Usage:

SEBE8685

March 9, 2004
U-63
A-43
D-47
O-51
TT-8
TM-1

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*Priority*	PRODUCT IMPROVEMENT PROGRAM FOR REPLACING PLUGS ON CERTAIN 3114, 3116, 3126, AND 3126B ENGINES; 322C, 325C, 325C L MEDIUM EXCAVATORS; 938G II, 950G II, 962G II MEDIUM WHEEL LOADERS, 953C AND 963C TRACK LOADERS, D5N LGP, D5N XL, D6N LGP, D6N-XL, D6N XL DS TRACK TYPE TRACTORS, AND CS-531D, CS-531D, CS-533C, CP-533D VIBRATORY SOIL COMPACTORS
1306		PI30592

NOTE: This Program must be administered as soon as possible. When reporting the repair, use "PI30592" as the Part number and "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 "PI30592" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

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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COMPLETION DATE	TERMINATION DATE
September 30, 2004	March 31, 2005

PROBLEM

The plugs need to be replaced on certain 3114, 3116, 3126, and 3126B Engines; 322C, 325C, 325C L Medium Excavators; 938G II, 950G II, 962G II Medium Wheel Loaders, 953C and 963C Track Loaders, D5N LGP, D5N XL, D6N LGP, D6N-XL, D6N XL DS Track Type Tractors, and CS-531D, CS-531D, CS-533C, CP-533D Vibratory Soil Compactors. Some engines have been assembled with wrong plugs. The installation of the wrong plug decreases the bypass valve pressure allowing the passage of unfiltered oil into the engine lubricant circuit.

AFFECTED PRODUCT

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Model	Identification Number
3114	2FG7956, 7959, 7960
3116	4TF85314, 85318, 85320-85322, 85324, 85327, 85330, 85332, 85335, 85345, 85347-85348, 85364, 85370, 85372-85373, 85379, 85381 7JL3593-3596, 3598-3607, 3609-3611, 3613, 3616, 3619, 3623-3625, 3629, 3654-3675, 3684, 3697 2MR03563-03572
3126	6MK1823-1832, 1834-1842 9ZF743-761, 765
3126B	DCS569-573, 583, 586, 591, 592, 595, 596, 599, 600, 603, 604, 606-608
322C	EMR262, 263, 267, 269, 282, 283, 285-289 MAR212-227, 229, 232, 233, 235, 237
325C	CSJ880-884, 886, 888-891, 893, 895-898, 913 JLC285 JLD313
325C L	CRB715, 718, 722-725, 729, 733-735, 737, 740, 747, 748, 750, 769, 770
938G II	PHN676-681, 684, 687-694, 697, 699-701, 705-707, 709-730, 755, 760, 762, 763, 765-769, 774-776, 800, 820
950G II	AYB733, 734, 737 AYL1174, 1175, 1177-1183, 1185, 1187-1194, 1196, 1197, 1199, 1200, 1203, 1209, 1210, 1212, 1214, 1215, 1217, 1219, 1239-1244
962G II	AYE555, 557 BAB476, 478-485
953C	BBX268, 272, 273, 275-280, 282, 285, 287, 289, 290, 291, 293, 298-302, 304-306, 330, 336, 338-342, 346, 347
963C	BBD531, 538-541, 543, 544, 546, 547, 549-553, 556, 558, 559, 561, 562, 564, 565, 567-569, 578, 588, 592, 593
D5N LGP	AKD521, 524, 526-528, 532-539, 541-545, 547-552, 572-574, 576, 577, 579-582, 592-595, 601-604, 607
D5N XL	AGG515-541, 543-557, 559, 562, 563, 566, 579, 586-588, 592, 593, 595, 599-605, 607, 611, 614-616, 623, 624, 627, 628, 666
D6N LGP	ALR303, 305-310, 314, 315, 317 ALY584-588, 591-593, 595-603, 607-623, 627, 648, 652-664, 668-676
D6N XL	ALH326, 327, 332, 333, 336, 338-340, 342, 343, 345
D6N XL DS	AKM600, 602, 604-606, 608-610, 612-623, 625, 636, 640-645, 647-651, 655-658, 670
CS-531D	4MZ433, 434, 437
CS-533C	5CZ654, 659, 662
CP-533D	6AZ316
OEM Products*	0EM588, 726, 727

* Partial machines, power trains, etc., sold through Caterpillar OEM Solutions Group. (Reference Warranty Bulletin No. 2.10)

PARTS NEEDED

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Qty	Part Number	Description
2	2M9780	SEAL-O-RING
2	5P8196	PLUG-O-RING

ACTION REQUIRED

See the attached Rework Procedure.

OWNER NOTIFICATION

U.S. and Canadian owners will receive the attached Owner Notification.

SERVICE CLAIM ALLOWANCES

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Caterpillar		Dealer Suggested		Customer Suggested
Parts	Labor Hrs.	Parts	Labor Hrs.	Parts	Labor Hrs.
100%	1.0	0	0	0	0
NOTE: This is a 1.0-hour job. NOTE: U.S. and Canadian Dealers Only - Eligible dealers may enter a Type 2 SIMS Report

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)
(2-Rework Procedure)

COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR REPLACING PLUGS

MODELS INVOLVED - CERTAIN 3116, 3126, AND 3126B ENGINES; 322C, 325C, 325C L MEDIUM EXCAVATORS; 938G, 950G II, 962G II MEDIUM WHEEL LOADERS, 953C AND 963C TRACK LOADERS, D5N LGP, D5N XL, D6N LGP, D6N-XL, D6N XL DS TRACK TYPE TRACTORS, AND CS-531D, CS-531D, CS-533C, CP-533D VIBRATORY SOIL COMPACTORS

Dear Caterpillar Product Owner:

New plugs need to be installed on the products listed below. Some 3116, 3126, and 3126B engines have been assembled with 9S4190 plugs instead of 5P8196 plugs of the oil filter bypass system. The installation of the wrong plug decreases the bypass valve pressure allowing the passage of unfiltered oil into the engine lubricant circuit. You will not be charged for the service performed.

Contact your local Caterpillar dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service. Please refer the dealer to their Service Letter dated March 9, 2004 when scheduling this service.

We regret the inconvenience this may cause you, but urge you to have this service performed as soon as possible to prevent unscheduled downtime.

Caterpillar Inc.

Identification #(s)

Attached to March 9, 2004 Service Letter

Rework Procedure

A) For Commercial Engine

Replace the 9S4190 Plugs with the 5P8196 Plugs on the engine oil filter base at locations (1) and (2) torque to 57+5 Nm (42+4 lb ft). Replace both Old 2M9780 Seals by New One.