0584204 JOHNSON RECTIFIER & REGULATOR ASSY.

January 20, 2004
(Revised February 2004)
U-10
O-9
PriorityParts stock action needed PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE ENGINE COOLING HOSES IN THEWATER LINES GROUP ON CERTAIN D6R II TRACK TYPE TRACTORS
1380 PI30575
This Program must be administered assoon as possible. When reporting the repair, use "PI30575" as the Partnumber and "7751" as the Group Number, "56" as the Warranty Claim DescriptionCode and "T" as the SIMS Description Code. Exception: If the repair isdone after failure, use "PI30575" as the Part Number, "7751" as the GroupNumber, "96" as the Warranty Claim Description Code, and "Z" as the SIMSDescription Code. The information supplied in this serviceletter may not be valid after the termination date of this program. Donot perform the work outlined in this Service Letter after the terminationdate without first contacting your Caterpillar product analyst. This Revised Service Letter replacesthe January 20, 2004 (Revised February 2004) Service Letter. Changes havebeen made to remove a note from the Parts Needed.
COMPLETION DATE
TERMINATION DATE
July 31, 2004 January 31, 2005PROBLEM
The engine cooling hoses in the water lines groupneed to be replaced on certain D6R II Track Type Tractors. If the hosesfail, coolant loss will cause overheating resulting in engine damage.AFFECTED PRODUCT
Model Identification Number
D6R II BLT1-169
BLE1-173
D6R II L BNC1-253
D6R II X BMJ1-129BMY1-256
DAE1-128PARTS NEEDED
Qty
Part Number Description
1 1850844 Hose
16 2056611 Coolant
1 2131724 HoseACTION REQUIRED
***** Parts Stock *****Remove all 1850844 and 2131724 Hoses (withthe circle "A", as shown in Illustration 2 of the Rework Procedure) fromparts stock.***** Affected Product *****See the attached Rework Procedure.OWNER NOTIFICATION
U.S. and Canadian owners will receive the attachedOwner Notification. SERVICE CLAIM ALLOWANCES
***** Parts Stock *****Submit one claim for all 1850844 and 2131724Hoses removed from parts stock.***** Affected Product *****
Caterpillar Dealer Suggested Customer Suggested
Parts Labor Hrs Parts LaborHrs Parts LaborHrs
100% 2 0 0 0 0
This is a 2-hour job.PARTS DISPOSITION
Handle the parts in accordance with your WarrantyBulletin on warranty parts handling.MAKE EVERY EFFORT TO COMPLETE THIS PROGRAMAS 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 99999PRIORITY ? Replace The Engine Cooling HosesIn The Water Lines GroupMODELS INVOLVED - D6R II Track Type TractorsDear Caterpillar Product Owner:The engine cooling hoses in the water linesgroup need to be replaced on certain D6R II Track Type Tractors. If thehoses fail, coolant loss will cause overheating resulting in engine damage.New hoses need to be installed on the products listed below. You will notbe charged for the service performed.Contact your local Caterpillar dealer immediatelyto schedule this service. The dealer will advise you of the time requiredto complete this service. Please refer the dealer to their Service Letterdated January 20, 2004 when scheduling this service.We regret the inconvenience this may causeyou, but urge you to have this service performed as soon as possible toprevent unscheduled downtime.Caterpillar Inc.
Identification #(s)Attached to January 20, 2004 Service LetterRework Procedure
Remove the front belly guard and drain the enginecoolant.
Remove the 1850844 and 2131724 Hoses and replacewith new hoses of the same parts number. See Illustration 1 to locate thehoses on the machine. The parts number did not change but the supplierchanged. Install hoses from the new supplier only. See Illustration 2 toidentify the hoses from the new supplier.
Install clips and clamps as shown on Illustration1 and tighten the 8T4984 Clamps at 11 N.m. Be sure there are no interferencebetween the hoses and others parts.