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PRODUCT SUPPORT PROGRAM FOR INSTALLING A NEW PUMP DRIVE SHAFT SEAL AND IMPROVED CASE DRAIN LINES ON CERTAIN M300C WHEELED EXCAVATORS Caterpillar


PRODUCT SUPPORT PROGRAM FOR INSTALLING A NEW PUMP DRIVE SHAFT SEAL AND IMPROVED CASE DRAIN LINES ON CERTAIN M300C WHEELED EXCAVATORS

Usage:

SEBE9084

February 27, 2005
U-62
A-45
D-52
O-53


 
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After failure only

PRODUCT SUPPORT PROGRAM FOR INSTALLING A NEW PUMP DRIVE SHAFT SEAL AND IMPROVED CASE DRAIN LINES ON CERTAIN M300C WHEELED EXCAVATORS
5058, 5057, 5070
PS50913
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 "PS50913" 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.

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.

TERMINATION DATE

February 28, 2007

PROBLEM

Numerous root causes for main pump shaft leakage have been identified and eliminated for production machines. In addition to the handling of the pumps and cleansing before assembly, an improved pump case drain line routing has been developed to reduce the case drain back pressure. This reduces premature wear of the seal lip surface.

AFFECTED PRODUCT

***Group 1***
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Model Identification Number
M313C BDR88-616
                   ***Group 2***
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Model Identification Number
M315C BDM312-718
        ***Group 3***
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Model Identification Number
M316C BDX90-777, 779-795
***Group 4***
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Model Identification Number
M318C BCZ211-922

BEB197-256
***Group 5***
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Model Identification Number
M322C BDK122-415

BDY234-366

PARTS NEEDED

      ***Group 1***
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Qty

Part Number

Description
1
9X7454
 Seal O-Ring
3
3D2824
 Seal O-Ring
1
8U0198
 Filter AS
1
2466167
 Hose AS
4
6V9746
 Seal O-Ring
1
6V9846
 Tee-Swivel
1
6V8640
 Connector-Seal
1
2M9780
 Seal O-Ring
1
2501656
 Hose AS
1
6V8637
 Connector-Seal
2
 
2291997
 Ring-Retaining
1
1307804
 Shaft
1
1261420
 Seal-Shaft
      ***Group 2***
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Qty

Part Number

Description
1
9X7454
 Seal O-Ring
3
3D2824
 Seal O-Ring
1
8U0198
 Filter AS
1
2466167
 Hose AS
4
6V9746
 Seal O-Ring
1
6V9846
 Tee-Swivel
1
6V8640
 Connector-Seal
1
2M9780
 Seal O-Ring
1
2501656
 Hose AS
1
6V8637
 Connector-Seal
2
 
1838452
 Ring-Retaining
1
1838453
 Ring-Seal
1
1175762
 Shaft GP

      ***Group 3***
 

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Qty

Part Number

Description
1
9X7454
 Seal O-Ring
3
3D2824
 Seal O-Ring
1
8U0198
 Filter AS
1
2031926
 Hose AS
4
6V9746
 Seal O-Ring
1
6V9846
 Tee-Swivel
1
6V8640
 Connector-Seal
1
2M9780
 Seal O-Ring
1
2501656
 Hose AS
1
6V8637
 Connector-Seal
2
 
1838452
 Ring-Retaining
1
1838453
 Ring-Seal
1
1175762
 Shaft GP

      ***Group 4***
 

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Qty

Part Number

Description
1
9X7454
 Seal O-Ring
4
3D2824
 Seal O-Ring
1
8U0198
 Filter AS
1
2031926
 Hose AS
4
6V9746
 Seal O-Ring
1
6V9846
 Tee-Swivel
1
6V8637
 Connector-Seal 
1
2501656
 Hose AS
1
6V8637
 Connector-Seal
2
 
1838452
 Ring-Retaining
1
1838453
 Ring-Seal
1
1175762
 Shaft GP
  ***Group 5***
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Qty

Part Number

Description
1
9X7454
 Seal O-Ring
2
3D2824
 Seal O-Ring
1
8U0198
 Filter AS
1
2031926
 Hose AS
4
6V9746
 Seal O-Ring
1
6V9846
 Tee-Swivel
1
6V8637
 Connector-Seal
1
2501656
 Hose AS
1
6V8716
 Connector-Seal
1
 
7M8485
 Seal O-Ring
1
 
2089670
 Ring-Retaining
1
8T7567
 Ring
1
2138401
 Seal ? Lip Type
1
1453772
 Shaft GP

ACTION REQUIRED

Remove and replace the main pump shaft seal (including the shaft if necessary) and the case drain hydraulic hoses. Please note the attached Rework Procedure.

SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first
Caterpillar
Dealer Suggested
Customer Suggested
 
Parts
Labor Hrs
Parts
Labor Hrs
Parts
Labor Hrs
0-6000
0-60 mos
100%
5.0
0
0
0
0
NOTE: This is a 6.0?hr job for M313C.

PARTS DISPOSITION

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

Attach. (1-Rework Procedure)

Rework Procedure

  1. Remove swing pump according to the Disassembly and Assembly manual for each model.
  2. Remove main pump according to the Disassembly and Assembly manual for each model. Set main pump on end, with shaft pointing up, to ease serviceability.
  3. Remove the following parts from the machine:

    4.  

     

    8U-0198 Filter AS

    148-8444 Tee AS

    130-8233 Hose AS

    148-8328 Connector AS

    194-7844 Hose AS

    148-8328 Connector AS

    9S-8008/112-4630 Plug (Pos g; Hold this plug; it will be installed in the old drain line port)

    Figure 1: Old hose routing
  4. Remove shaft snap-ring, seal cover, and shaft seal. (See Fig 3)
  5. Clean the pump shaft in the seal location. Note: If the shaft surface is not free of debris in the seal location, the seal will not function properly.
  6. Install new o-ring, shaft seal, and seal cover (all supplied in the kit), specified for each model. As seal orientation is critical, note seal orientation detailed below. (Fig. 5)
  7. Re-install shaft snap ring.
  8. Clean pump face, and engine flywheel housing.
  9. Re-install main pump, using Loc-tite 518 or similar on the pump face and the inspection plate.
  10. Install shaft coupling to main pump shaft.
  11. Re-Install swing pump.
  12. Install the following parts as shown in the drawing:

    13. a. 9S-8008/112-4630                 Plug AS with 3D-2824/7M8485 O-Ring in T2
    b. 8U-0198 Filter AS with
                            9X-7454 O-Ring
                            3D-2824 O-Ring
    c. 203-1926/246-6167                Hose AS
      d. 250-1656                         Hose AS with 3D-2824 Seal O-Ring, 6V-8637
                                          Connector?Seal  and 6V-9746 Seal O-Ring
    e. 150-4033                             Tee AS (6V-9846 Tee and 6V-9746O-rings)with
                                            3D-2824/2M9780 Seal O-Ring,6V-8637/6V-8640
                                            Connector - Seal and 6V-9746 Seal O-Ring
Figure 2: New hose routing
Figure 3: Lock ring removal
 
 

Figure 4: Cut-away view of pump with location of the shaft seal
 
 

Figure 5: Correct orientation of seal


Note: The seal will leak if not properly oriented.

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