PRODUCT SUPPORT PROGRAM FOR INSTALLING A HARNESS AND RELAY ON CERTAIN 303E AND 303E CR MINI HYDRAULIC EXCAVATORS, EQUIPPED WITH THE MSS (MACHINE SECURITY SYSTEM) Caterpillar


PRODUCT SUPPORT PROGRAM FOR INSTALLING A HARNESS AND RELAY ON CERTAIN 303E AND 303E CR MINI HYDRAULIC EXCAVATORS, EQUIPPED WITH THE MSS (MACHINE SECURITY SYSTEM)

Usage:



TEBE0587-00

03Feb2014


D-48

 

Before/After

  
  

PRODUCT SUPPORT PROGRAM FOR INSTALLING A HARNESS AND RELAY ON CERTAIN 303E AND 303E CR MINI HYDRAULIC EXCAVATORS, EQUIPPED WITH THE MSS (MACHINE SECURITY SYSTEM)

1403 1408
PS44177
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 "PS44177" 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.

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

29Feb2016

PROBLEM

The glow lamp may illuminate when the hydraulic locking lever is lowered at key on, on certain 303E and 303E CR Mini Hydraulic Excavators. The glow lamp may illuminate due to the key on signal flowing to the controller through MSS when the hydraulic locking lever is lowered. This failure will occur only on machines equipped with the MSS system.

AFFECTED PRODUCT

Model Identification Number
303E  SMG00108, 115-120, 125-129, 139-140, 144-146, 152-158, 160-162
303E CR  CR700106-00109, 115-116, 126-127, 129-130

PARTS NEEDED

Qty

Part Number Description
3 3S2093 STRAP-CABLE
1 2391182 RELAY AS
1 4449953 HARNESS AS
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 10% 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

Add a new 444-9953 Harness Assembly and 239-1182 Relay Assembly between 156-6155 MSS Control Group and the 389-0761 Control Assembly in order to cut the weak voltage (key on signal). Refer to the attached Rework Procedure.

SERVICE CLAIM ALLOWANCES

Product smu/age whichever comes first
Caterpillar
Dealer Suggested
Customer Suggested
Parts %
Labor Hrs%
Parts %
Labor Hrs%
Parts %
Labor Hrs%
0-1270 hrs,
0-12 mo 
100.0%
100.0%
0.0%
0.0%
0.0%
0.0%
 NOTE: This is a 1.0-hour job



PARTS DISPOSITION

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


Rework Procedure


 
Important: This Rework Procedure should only be completed on machines equipped with the MSS (Machine Security System).

This procedure should NOT be completed for the machines that do NOT have a MSS.

1. Open the access door under the seat to access the electrical components. Refer to Image1.1.1.
Image1.1.1
 
2. Disconnect the 250-2048 Interlock Relay from the 422-2930 Harness Assembly. Refer to Image1.2.1.
Image1.2.1
 
3. Connect the 239-1182 Relay Assembly to the 444-9953 Harness Assembly (non-branched side connector). Refer to Image1.3.1.
Image1.3.1
 
4. Connect the 444-9953 Harness Assembly to the 250-2048 Interlock Relay and the 422-2930 Harness Assembly that were disconnected in Step 1. Refer to Image1.4.1.
Image1.4.1
 
5. Tighten the 444-9953 Harness Assembly to each of the three cables using three 3S-2093 Cable Straps. Refer to Image1.5.1.
Image1.5.1
 
6. Close the access door.
 
 

Caterpillar Information System:

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