PRODUCT SUPPORT PROGRAM FOR REPLACING THE BLOCK ASSEMBLY ON THE PUMP HEAD GROUP ON CERTAIN 374F AND 390F EXCAVATORS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPLACING THE BLOCK ASSEMBLY ON THE PUMP HEAD GROUP ON CERTAIN 374F AND 390F EXCAVATORS

Usage:

TEBE8931-01

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04Apr2019

(Revised 19Apr2019)

U-205

A-176

D-181

O-186

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Before/After	PRODUCT SUPPORT PROGRAM FOR REPLACING THE BLOCK ASSEMBLY ON THE PUMP HEAD GROUP ON CERTAIN 374F AND 390F EXCAVATORS
5455		PS46210

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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 "PS46210" 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 04Apr2019 Service Letter. Changes have been made to the Affected Product and Rework Procedure, Pump 2 Rework Procedure, Step 3.

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TERMINATION DATE

30Apr2021

PROBLEM

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The existing block assembly can fail on certain 374F and 390F Excavators. If the existing block assembly fails, it can cause pump calibration errors.

AFFECTED PRODUCT

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Model	Identification Number
*****Group 1*****
374F	AP400231-00243 AT200148-00160 MFL00029, 205-207, 210-244, 246-252, 255-256, 259-272, 275-296, 10001-10073, 20001-20105 NFJ00121, 124-125, 129-132, 137-139, 141-144, 152-168, 10003-10010, 10025-10027, 10033, 10039, 10041-10043, 10045-10048, 10050-10052, 10086-10090, 10093, 10095-10103, 10106-10112, 10114, 20001, 20003, 20008-20009, 20017-20021, 20027-20029, 20034-20037, 20047-20057, 20060-20081, 20083-20108
374F L	DNM00201-00501, 10001-10018 EBF00111-00114, 10001-10050, 10053-10060, 10062-10098, 20001-20086, 20088-20131, 20133-20140, 20143-20278 P4L90204 XWL00131-00143
374F OEM	DP400101-00105, 10001-10002 DPE00101-00114 FH900103, 90200 H2500101-00110, 129-133, 142-144
390F	GAY00160-00223, 10001-10069, 10071-10101, 20001-20136 HJD00231-00235, 237, 10008, 10011-10014, 10025-10028, 10035-10036, 10054, 10060, 10062, 10066-10067, 10070-10071, 10075-10076, 20068, 20084-20087, 20101, 20104-20108, 20110-20113, 20116-20118, 20123-20152, 20154, 20156-20226 HSM00281-00306 TYE00131-00223
390F L	FEH00211-00214, 10001-10070, 20001-20056, 20058-20062, 20064-20077 HNG00171-00333 MGF00151-00359, 10001-10015 P4J00101-00102, 90201 YHT00271-00276
390F L OEM	N6400101, 103, 105, 90200
390F MH OEM	H2790228
390F OEM	EXB00101-00106 PT700101-00102 PYE10101

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*****Group 2*****
374F	MFL00201-00204, 208-209, 245, 253-254, 257-258, 274 NFJ00122-00123, 126-128, 133-136, 140, 145-151, 169-170, 10001-10002, 10011-10024, 10028-10032, 10034-10038, 10040, 10044, 10049, 10053-10085, 10091-10092, 10094, 10104-10105, 10113, 20004-20007, 20010-20016, 20022-20026, 20030-20033, 20038-20046, 20058-20059
374F L	EBF10051-10052, 10061 P4L00101, 103, 90102, 90200-90203, 90205-90218
374F OEM	FH900101-00102 H2500111-00128
390F	GAY00156-00159 HJD00236, 238, 10001-10007, 10009-10010, 10015-10024, 10029-10034, 10037-10053, 10055-10059, 10061, 10063-10065, 10068-10069, 10072-10074, 10077-10078, 20001-20067, 20069-20083, 20088-20100, 20102-20103, 20109, 20114-20115, 20119-20122
390F L	P4J90200
390F L OEM	N6400102, 104
390F MH OEM	H2790200-90224

PARTS NEEDED

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Qty	Part Number	Description
*****Group 1*****
1	4649758	GASKET
2	5763073	BLOCK AS
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 16% 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	4649758	GASKET
2	5763073	BLOCK AS
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 16% 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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Note: Parts will be on CPI Freeze, please use Future dated orders (FDO) to stock for all planned repairs.

Ensure that all safety information, warnings, and instructions are read and understood before any operation or any maintenance procedures are performed. Refer to the Operation and Maintenance Manual "Safety Section".

Refer to the Service Manual if/as necessary.

Refer to the Operation and Maintenance manual, for your machine, in order to release system pressure.

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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*****
0-8000 hrs, 0-36 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
8001-10000 hrs, 37-48 mo	53.0%	67.0%	0.0%	0.0%	35.0%	33.0%
10001-12000 hrs, 49-60 mo	33.0%	50.0%	0.0%	0.0%	50.0%	50.0%

NOTE: This is a 4.0-hour job for Group 1

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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*****
0-8000 hrs, 0-36 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
8001-10000 hrs, 37-48 mo	53.0%	67.0%	0.0%	0.0%	35.0%	33.0%
10001-12000 hrs, 49-60 mo	33.0%	50.0%	0.0%	0.0%	50.0%	50.0%

NOTE: This is a 4.0-hour job for Group 2

PARTS DISPOSITION

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

Rework Procedure

Pump 1 Rework Procedure:

1. Install Tooling (A) onto the hydraulic tank. Attach an air supply to Tooling (A). Apply 345 +/- 69 kPa (50 +/- 10 psi) of air. This procedure will pull a vacuum on the hydraulic system. Refer to Images1.1.1 and 1.1.2.

Image1.1.1

Image1.1.2

2. Label the hoses on Pump 1 before disconnecting. Disconnect the following hoses: Cross-sensing, NFC and Powershift, on the controller. Refer to Image1.2.1.

Image1.2.1

3. Loosen the four Allen screws of the head group and remove the head group. Retain bolts for later reuse. Refer to Image1.3.1.

Image1.3.1

4. Remove existing four bolts (B) and block assembly (C) from the head group. Retain bolts for later reuse. Refer to Image1.4.1.

Image1.4.1

5. Install new 576-3073 Block Assembly (1) and 464-9758 Gasket to the head group. Reinstall four bolts (B) and tighten to a specified torque of 6.1 N.m (4.5 ft.lb). Refer to Images1.5.1 and 1.5.2.

(D) Circle groove identifying PCA part

Image1.5.1

Image1.5.2

6. Reposition the head group on the pump. Ensure that the lever is inserted into the hole of the actuator piston pump. Then, move the head group to the position opposite the mounting holes. Refer to Image1.6.1 that shows (E) then (F). Be careful not to damage the contact face on the pump. Refer to Image1.6.1.

Image1.6.1

7. Reinstall the mounting bolts crosswise by hand and then tighten the bolts to a specified torque of 15.5 N.m. Refer to Image1.7.1.

Image1.7.1

8. Reconnect the hoses and check the routing. Refer to Image1.8.1.

Image1.8.1

Pump 2 Rework Procedure:

1. Remove hose assembly (G) from the block assembly of the head group on Pump 2. Retain bolts for later reuse. Refer to Image1.9.1.

Image1.9.1

2. Remove existing four bolts (H) and block assembly (J) from the head group. Retain bolts for later reuse. Refer to Image1.10.1.

Image1.10.1

3. Install new 576-3073 Block Assembly to the head group. Reinstall four bolts (H) and tighten to a specified torque of 6.1 N.m (4.5 ft.lb). Refer to Images1.11.1 and 1.11.2.