PRODUCT SUPPORT PROGRAM FOR INSTALLING VARIABLE SPEED FAN ON CERTAIN 785D OFF-HIGHWAY TRUCKS Caterpillar

PRODUCT SUPPORT PROGRAM FOR INSTALLING VARIABLE SPEED FAN ON CERTAIN 785D OFF-HIGHWAY TRUCKS

Usage:

TEBE7593-04

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16Apr2018

(Revised 03Dec2018)

V266
V27E

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Containment - Before/After (Limited distribution)	PRODUCT SUPPORT PROGRAM FOR INSTALLING VARIABLE SPEED FAN ON CERTAIN 785D OFF-HIGHWAY TRUCKS
1356 1359 1350		PS90874

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NOTE:

Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.

NOTE:

This Containment Program can be administered either before or after a failure occurs. In either case the decision whether to apply the Program is made by the dealer and service rep. Obtain the service reps Goodwill Approver Code before completing the repair. EAME dealers should use their standard Industry Group specific goodwill approval codes. The Goodwill Approver Code must be included when submitting the claim.

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NOTE:	When reporting the repair, use "PS90874" as the Part Number and "7777" as the Group Number. If administered before failure, use "56" as Warranty Claim Description and "T" as the SIMS Description Code. If administered after failure, use "96" as Warranty Claim Description Code and use "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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NOTE:	This Revised Service Letter replaces the 16Apr2018 (Revised 02Nov2018) Service Letter. Changes have been made to the Parts Needed.

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TERMINATION DATE

30Apr2020

PROBLEM

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The existing direct drive fan on certain 785D Off-Highway Trucks can cause engine overcooling when operating in ambient temperature below 0C degrees. If the engine continuously operates overcooled it may cause excessive sedimentation of hard abrasive soot on the engine piston pack parts. This leads to increased abrasive wear of piston pack and premature engine overhaul.

AFFECTED PRODUCT

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Model	Identification Number
785D	MSY00686, 688, 690-691, 696, 705-706, 708, 732-734, 741-747

PARTS NEEDED

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Qty	Part Number	Description
9	0S1588	BOLT
1	0T0102	BOLT
8	1D4566	BOLT
2	2A4639	BOLT
4	2S8926	BOLT-HEX HEAD
1	4B5006	FITTING-HYD
2	4F0411	BOLT
2	4L9337	BOLT-HEX HEAD
1	4P7581	CLIP-LADDER
2	5M2894	WASHER-HARD
1	5P2231	ADAPTER-STR THD
2	5P8167	BOLT
8	5P8245	WASHER-HARD
4	5P8248	WASHER-HARD
2	6I3996	GASKET
1	6V8626	ADAPTER-ELBOW
4	6V8627	ADAPTER-ELBOW
4	8C6857	BOLT
1	8M7066	GASKET
2	8N3248	GASKET AS
1	8S9191	BOLT
1	8T0120	ADAPTER-ELBOW
1	8T1686	ADAPTER-ELBOW
2	8T1887	CLIP
2	8T1888	CLIP
2	8T1889	CLIP-2 PIECE
2	8T1890	CLIP-2 PIECE
2	8T2501	BOLT
1	8T6764	PLUG-NPTF
1	9M3116	GASKET
4	9S1374	BOLT
6	9X6772	STRAP-CABLE
1	9Y5010	ADAPTER-GREASE
3	0919035	SPACER-HARD
1	1007603	ADAPTER-ELBOW
1	1008028	PULLEY-FAN
2	1044764	HOSE AS
1	1044766	HOSE AS
1	1054302	GASKET
1	1196346	TEE-RUN (STOR
1	1204512	BRACKET
1	1435123	HARNESS AS
1	1632592	DRIVE GP-FAN
1	1749366	SPACER-FAN
1	1902758	SPACER
1	1927139	VALVE GP-MTG
1	2147567	SEAL-O-RING-STOR
4	2147568	SEAL-O-RING-STOR
6	2287088	SEAL-O-RING-ORFS
2	2287090	SEAL-O-RING-ORFS
2	2287091	SEAL-O-RING-ORFS
1	2287097	SEAL-O-RING-STOR
1	2385080	SEAL-O-RING-STOR
1	2385081	SEAL-O-RING-STOR
1	2385082	SEAL-O-RING-STOR
4	2923198	WASHER-HARD
1	3198058	BRACKET AS
2	3446323	SPACER
1	3537953	GROMMET
1	3537954	GROMMET
2	3537957	GROMMET
1	5107285	SPIDER AS-FAN
1	5112219	SPACER
1	5112220	SPACER
1	5165915	BRACKET
1	5197785	HOSE AS-OIL
1	5197786	HOSE AS-OIL
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 32% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.

ACTION REQUIRED

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Remove direct drive fan and install variable speed fan.

Refer to:
KENR8314 - 785D Off-Highway Truck Engine Supplement Disassembly and Assembly.
M0082070 - Procedure to Improve the Fan Drive Group on Certain 785C and 785D Off-Highway Trucks.

Note: The 381-9503 Spacer listed in Special Instruction M0082070 (version -02) is now serviced by a 091-9035 Hard Spacer. The 091-9035 Hard Spacers are listed in the Parts Needed section.

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SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-12000 hrs, 0-24 mo	53.0%	0.0%	0.0%	100.0%	35.0%	0.0%