PRODUCT SUPPORT PROGRAM FOR REPLACING THE COOLANT SHUNT TANK ON CERTAIN 336E/F, 349E/F, 352F, 374F, AND 390F EXCAVATORS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE COOLANT SHUNT TANK ON CERTAIN 336E/F, 349E/F, 352F, 374F, AND 390F EXCAVATORS

Usage:

TEBE5222-03

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31Oct2016

(Revised 24Mar2017)

U-575

A-409

D-485

O-482

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Before/After	PRODUCT SUPPORT PROGRAM FOR REPLACING THE COOLANT SHUNT TANK ON CERTAIN 336E/F, 349E/F, 352F, 374F, AND 390F EXCAVATORS
1354 1377		PS45266

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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 "PS45266" 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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NOTE:	This Revised Service Letter replaces the 31Oct2016 (Revised 31Jan2017) Service Letter. Changes have been made to the Rework Procedure in order to clarify Step 5.

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TERMINATION DATE

31Oct2018

PROBLEM

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The existing coolant level sensor can leak on certain 336E/F, 349E/F, 352F, 374F, and 390F Excavators. If the existing tank or sensor fails, it can allow the coolant to leak into the wiring harness. The pressure of the coolant in the tank can push the coolant through the wiring harness possibly causing corrosion of the connector at the cab and the engine ECM. The corrosion may cause electrical faults and could cause the engine not to run.

AFFECTED PRODUCT

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Model	Identification Number
*****Group 1*****
374F	AP400231-00243 AT200148-00160
374F L	DNM00201-00450
374F OEM	DP400101-00104
390F	HSM00281-00306 TYE00131-00223
390F L	MGF00151-00329
390F OEM	PT700101-00102

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*****Group 2*****
336E	CMR00287-00393 KED00305-00354
336E H	HDW00200-00240
336E L	BZY02543-02673, 2675-2691 GTJ00166-00200 TEG00209-00235 YCE00767-00780 YEP00543-00549
336E L H	JEA00161-00180 RZA01031-01060
336E L OEM	T3Z00252-00256
336E LN	TMZ00433-00439
336E LN H	SSL00181-00183
336F L	NBS00231-00369 RKB00241-01910, 1912-1917, 1919, 1921-1923 SSN00198-00449 TZA00161-00507 WTZ00151-00250 ZBJ00141-00145
336F L H	KGH00157, 160 LTP00182-00244, 246-252
336F L OEM	B3500101-00104, 106-108 B3900101-00107, 90107, 90116-90117
336F LN	KFT00261-00308 RBC00191-00249
336F LN H	MTW00164-00178
336F LNXE	YBH00121-00143
336F LXE	DFY00133-00258
336F OEM	B3400101-00124
340F	YBF00261-00266
349E	FJB00198-00204 RGH00196-00222
349E L	KFX00632-00702 SPG00227-00249 WHZ00147-00149
349E OEM	FKF00104-00108 S3P00215-00218
349F L	BZ200151-00387, 389-767, 769 HPD00101-00696, 698 KEA00165-00176
349F LXE	RAX00105-00106 SFG00114-00115
352F	XAL00121-00124
352F (VG)	KBP00201-00389 YEG00201-00244
352F VG	A9J00251-00278
352F XE-VG	SD200201-00211

PARTS NEEDED

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Qty	Part Number	Description
*****Group 1*****
1	5050524	TANK GP-COOLANT
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 7% 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.
*****Group 2*****
1	3980877	TANK GP-COOLANT
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 7% 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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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%
*****Group 1*****
0-3000 hrs, 0-24 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
3001-6000 hrs, 25-36 mo	100.0%	50.0%	0.0%	50.0%	0.0%	0.0%

NOTE: This is a 1.0-hour job for Group 1
Note: An additional 3.0 hours is allowed for removal of the hood group, if required.

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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%
*****Group 2*****
0-3000 hrs, 0-24 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
3001-6000 hrs, 25-48 mo	100.0%	50.0%	0.0%	50.0%	0.0%	0.0%

NOTE: This is a 2.0-hour job for Group 2
Note: An additional 3.0 hours is allowed for removal of the hood group, if required.

PARTS DISPOSITION

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

Rework Procedure

Inspect the coolant shunt tank, coolant level sensor connector, and wiring harness, for signs of coolant leakage onto or into the wiring harness.

1. Disconnect the harness connector between the coolant level sensor harness and main harness (1). Inspect the connector for the presence of coolant. Refer to Image1.2.1.

2. If there is coolant present in the harnesses or there is corrosion on the connectors, the harnesses must be replaced.

Image1.2.1

3. If there is coolant present at connector (1), follow the harness to 70 pin engine ECM connector (2). Inspect the connector on the harness and on the ECM for signs of corrosion or the presence of coolant. Refer to Image1.3.1.

4. If there is corrosion on the ECM connector or there is coolant on the ECM connector, inspect the ECM for proper operation.

5. If the tank level sensor is leaking coolant, ensure that Step 2 is completed, the harnesses will need to be replaced. Replace the existing tank with a new tank (can be either BEFORE FAILURE or AFTER FAILURE).