PRODUCT SUPPORT PROGRAM FOR REWORKING THE MUFFLER EXHAUST OUTLET ON CERTAIN 345D EXCAVATORS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REWORKING THE MUFFLER EXHAUST OUTLET ON CERTAIN 345D EXCAVATORS

Usage:

REBE6611-00

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22Feb2011

U-71

D-63

O-66

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*After Failure Only*	PRODUCT SUPPORT PROGRAM FOR REWORKING THE MUFFLER EXHAUST OUTLET ON CERTAIN 345D EXCAVATORS
1061 1062 7750		PS51991

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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 "PS51991" 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:

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

28Feb2013

PROBLEM

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Certain 345D Excavators may have been built with the incorrect muffler exhaust outlet length. The additional outlet length could cause excessive soot buildup in the engine compartment. If soot contamination is found in the affected machines, the muffler exhaust outlet should be shortened to reduce soot contamination.

AFFECTED PRODUCT

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Model	Identification Number
345D	NEG00179-00569, 574-575
345D L	BYC00146-00161 PBT00168-00483, 486-524 RAE00142-00151 RGD00141-00149
345D LC-VG	NLM00231-00246
345D OEM	L5R00100-00147 P5D00101-00158

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%
0-6000 hrs, 0-36 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 muffler exhaust outlet needs to be measured to ensure it is 160 mm (6 inches) or less. Use the following rework instructions to complete the procedure.
1. Remove the four 8T-4139 Bolts that secure the 255-2891 Exhaust Pipe Extension from the engine hood assembly.

Image1.1.1

2. Measure the exhaust outlet from the highest point on the muffler assembly as shown in Image 1.2.1. If the exhaust outlet is greater than 160 mm, proceed to Step 3. If the exhaust outlet is less than 160 mm, proceed to Step 5.

Image1.2.1

3. Measure up from the top of the muffler body and mark the exhaust outlet at 152 +0/-5 mm (6 +0/-0.2 inches) as shown in Image 1.3.1. Mark the exhaust tube to ensure a straight cut.

Image1.3.1

4. Cut and remove the excess length of the muffler exhaust outlet. Use tools as shown in Image 1.4.1 and Image 1.4.2.

Image1.4.1

Image1.4.2

5. Reinstall the 255-2891 Exhaust Pipe Extension (1) to the engine hood assembly with the four 8T-4139 Bolts (2) and the four 8T-4223 Washers (3) that were previously remove. Tightening torque of the Bolt is 100 +/- 20 Nm.