PRODUCT SUPPORT PROGRAM FOR REPLACING THE BRAKE FILTER GROUP ON CERTAIN 793D, 793F, 795F, AND 797F OFF-HIGHWAY TRUCKS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE BRAKE FILTER GROUP ON CERTAIN 793D, 793F, 795F, AND 797F OFF-HIGHWAY TRUCKS

Usage:

REBE8952-02

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04Oct2012

(Revised 09Nov2012)

U-522

A-413

D-445

O-479

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After Failure Only Parts stock action needed	PRODUCT SUPPORT PROGRAM FOR REPLACING THE BRAKE FILTER GROUP ON CERTAIN 793D, 793F, 795F, AND 797F OFF-HIGHWAY TRUCKS
5068 7750		PS52304

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NOTE:

This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS52304" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

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NOTE:

When submitting claim for Parts Stock Action, Use the appropriate 99Z as the s/n, the appropriate Service Letter Program Number as the Part number in the Part Causing Failure field, "7755" as the Group Number, "56" as the Description Code.

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NOTE:

Although this Program is to be administered as described above on the Affected Product, parts should be removed from parts stock as soon as possible.

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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 04Oct2012 (Revised 11Oct2012) Service Letter. Changes have been made to the Parts Needed and Action Required.

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TERMINATION DATE

31Oct2014

PROBLEM

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The existing 290-2567 or 3350980/">335-0980 Brake Filter Group check valve can loosen on certain 793D, 793F, 795F, and 797F Off-Highway Trucks. If the existing poppet fails, it can cause low brake pump pressure events and allow the filter to bypass.

AFFECTED PRODUCT

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Model	Identification Number
793D	FDB00147, 150, 705
793F	SSP00112-00719
793F AC	EMD00075-00077, 100
793F CMD	RBT00111-00139
793F XQ	SND00100-00121
795F AC	ERM00151-00263
797F	LAJ00141-00382
797F XQ	WSP00100-00116

PARTS NEEDED

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Qty	Part Number	Description
1	6V9008	ADAPTER-ELBOW (If Required)
1	8C6515	ADAPTER-TEE (If Required)
2	2287093	SEAL-O-RING-ORFS (If Required)
2	2385084	SEAL-O-RING-STOR (If Required)
1	3350980	FILTER GP-OIL -D
1	3714188	VALVE GP-CONT(U)
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 1% 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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****Parts Stock ****

Remove all 290-2567 Brake Filter Groups from dealer parts stock.

Remove all 3350980/">335-0980 Brake Filter Groups from dealer parts stock with lot numbers prior to 207824.

****Affected Product****

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The brake filter group check valve is considered failed if the check valve poppet is loose or failed.

Visually inspect the filter head during a filter change. No threads for the check valve should be visible inside the filter base (see Image 1 and Image 2). If the filter head on the 290-2567 or 3350980/">335-0980 Brake Filter Group shows exposed threads, the check valve is loose and should be replaced with a new 3350980/">335-0980 Brake Filter Group.

If the valve has loosened sufficently to allow the poppet to dislodge (see image 3), the poppet will flow downstream to the brake pump unloader valve (See Image 4). The machine may see E526 system event (BkPmp Prs NoRsp). The brake pump unloader valve should also be replaced if the poppet is found in the brake pump unloader.

The 290-2567 was replaced by the 3350980/">335-0980 to improve serviceability of the machine.

Improved staking of the 3350980/">335-0980 Brake Filter Group check valve happened on lot #207824 from the supplier. Additional machines not included on the service letter built with parts from lots prior to #207824 have been reworked at the factory by the supplier. The lot number is printed on the film applied to the filter head.

The 6V-9008 adapter, 8C-6515 adapter, 228-7093 seals, and 238-5084 seals are required to update from machines equipped with a 290-2567 Brake Filter Group to a 3350980/">335-0980 Brake Filter Group. The 6V-9008 replaces the 6V-9008 adapter and 8C-6516 adapter replaces the 8C-4082 adapter.

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Image1

Image2

Image3

Image4

SERVICE CLAIM ALLOWANCES

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****Parts Stock****

Submit one claim for all parts removed from dealer parts stock.

****Affected Product****

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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%
0-21000 hrs, 0-36 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%