PRODUCT SUPPORT PROGRAM FOR INSPECTING, AND POSSIBLY REWORKING, THE HYDRAULIC SUCTION 474-3243 TUBE ON CERTAIN 563D, 573D, 2570D, AND 2670D WHEEL FELLER BUNCHERS Caterpillar

PRODUCT SUPPORT PROGRAM FOR INSPECTING, AND POSSIBLY REWORKING, THE HYDRAULIC SUCTION 474-3243 TUBE ON CERTAIN 563D, 573D, 2570D, AND 2670D WHEEL FELLER BUNCHERS

Usage:

TEBE8980-00

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25Mar2019

U-176

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Before/After	PRODUCT SUPPORT PROGRAM FOR INSPECTING, AND POSSIBLY REWORKING, THE HYDRAULIC SUCTION 474-3243 TUBE ON CERTAIN 563D, 573D, 2570D, AND 2670D WHEEL FELLER BUNCHERS
5057		PS46194

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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 Program must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS46194" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

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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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TERMINATION DATE

31Mar2021

PROBLEM

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The existing hydraulic suction 474-3243 Tube can contact the frame on certain 563D, 573D, 2570D, and 2670D Wheel Feller Bunchers. If the existing suction tube remains in contact with the frame, it can result in a leak.

AFFECTED PRODUCT

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Model	Identification Number
2570D	D2500100-00122
2670D	D2600200-00225
563D	D6300100-00191
573D	D7300200-00255

PARTS NEEDED

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No parts needed for this program

ACTION REQUIRED

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Refer to the attached Rework Procedure.

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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%
0-4000 hrs, 0-24 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%

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NOTE: This is a 2.0-hour job

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PARTS DISPOSITION

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Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Rework Procedure

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The purpose of this Inspection/Rework Procedure is to ensure sufficient space between the end of the hydraulic pump inlet suction tube and the frame.

Inspection Steps:

1. Open the hydraulic pump compartment doors, refer to Image1.1.1, noting the gap between the end of the suction tube and the frame. This is noted in Image1.1.1 by the double arrow between the end of the suction tube and the frame. The goal is to ensure adequate clearance (approx 1/2in) is present.

2. Note the position of the constant torque clamps on the vertical hose from the suction tube to the fan pump during the inspection, as these may need to be adjusted to just behind the barbs if adequate clearance is already present.

3. If the suction tube is contacting the frame, and/or the constant torque clamps are not directly behind the barbs, you will need to complete the following Rework Procedure.

The following steps will eliminate the possibility of the suction tube settling down on the frame in the future.

Image1.1.1

Rework Procedure if Contact is Present and/or Clamps Need to be Adjusted:

Note: If the suction tube was in contact with the frame it should be inspected to ensure there is no leak present.

1. Pull a vacuum on the hydraulic tank to limit oil loss.

2. Lower the belly pan and loosen the U-clamp holding the suction tube at the pump drive bracket to allow for movement. Refer to Image1.2.1.

3. Remove the side screen and locate the constant torque clamps on the front side of the suction tube. Loosen only enough to allow for movement, if needed. Refer to Image1.2.2. This step may NOT be necessary to allow the rework to be completed.

4. Loosen both constant torque clamps on the hose from the suction tube to the fan pump, and move the fan pump suction hose as far upward as possible. Refer to Images1.1.1 and 1.2.3.

5. Locate the barb on the fan inlet tube and secure the constant torque clamp just behind the barb. The barb should visibly show in the hose. Refer to Image1.2.3 for the approximate length of the tube and location of the barb. This will eliminate the possibility of the hose moving downward.

6. Raise the suction tube as far as possible until the bottom of the hose is making contact with the suction tube.

7. Locate the barb on the outlet end of the suction tube and secure it as close as possible on the back side of the barb. These steps limit the vertical movement of the metal suction tube.

8. Inspect the elbow hose between the suction tube and the propel pump ensuring it is not kinked by the previous process steps. If the elbow hose shows any sign of bending, it is acceptable to remove up to 1/2in off the end of the elbow hose, allowing you to move it downwards on to the outlet tube. Refer to the location in Image1.2.3. The style of hose used makes it possible to remove a section with a knife or box cutter.

9. Reinstall the constant torque clamp to the new hose length. Positioning of this clamp should be behind the barb, but is not as important since it does not control movement.

10. Tighten the clamp at the pump drive securing the tube rotation, the hose under the cooling package if loosened, and ensure all other hoses are tight, and then test for leaks.