PRODUCT IMPROVEMENT PROGRAM FOR INSTALLING REDUNDANT BRAKE PILOT LINE CIRCUIT ON CERTAIN 794 AC OFF-HIGHWAY TRUCKS
Usage:
TEBE8380-00
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04Jan2019 |
U-4
A-2
D-4
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Safety | PRODUCT IMPROVEMENT PROGRAM FOR INSTALLING REDUNDANT BRAKE PILOT LINE CIRCUIT ON CERTAIN 794 AC OFF-HIGHWAY TRUCKS |
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7755 7554 4257 | PI11199 |
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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 as soon as possible.
When reporting the repair, use "PI11199" as the Part Number and "7751" as the Group Number, "56" as the Warranty Claim
Description Code and "T" as the SIMS Description Code.
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PROBLEM
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Certain 794 AC Off-Highway Trucks do not have a redundant service brake pilot line circuit to enable activation of the service brakes in the event of a single component failure. If a service brake pilot circuit fails a service brake system failure will occur that may, in conjunction with other factors or circumstances, result in a risk of personal injury or death. |
AFFECTED PRODUCT
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Model | Identification Number |
794 AC | HRT00100 MN500052-00056 MT500100-00136 |
PARTS NEEDED
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Qty |
Part Number | Description |
2 | 4D6466 | CLIP |
1 | 6D4246 | CLIP-LOOP |
1 | 6V1889 | CLIP-LOOP |
1 | 6V8554 | NUT-SWIVEL |
4 | 6V8627 | ADAPTER-ELBOW |
2 | 6V8641 | ADAPTER-STR |
1 | 6V8647 | ADAPTER-STR |
1 | 6V8724 | ADAPTER-ELBOW 90 |
1 | 6V8935 | REDUCER |
1 | 6V9835 | ADAPTER-TEE |
1 | 6V9836 | ADAPTER-TEE |
1 | 6V9837 | ADAPTER-TEE |
15 | 7K1181 | STRAP-CABLE |
1 | 8T0151 | ADAPTER-STR |
4 | 8T4121 | WASHER-HARD |
2 | 8T4145 | BOLT-HEX HEAD |
2 | 8T4195 | BOLT-HEX HEAD |
2 | 9X3402 | SOCKET-CONNECTOR |
1 | 0903118 | SPLICE-WIRE |
1 | 1552270 | KIT-PLUG CONN |
4 | 1984775 | WASHER-HARD |
1 | 2147566 | SEAL-O-RING-STOR |
10 | 2147568 | SEAL-O-RING-STOR |
18 | 2287088 | SEAL-O-RING-ORFS |
4 | 2287089 | SEAL-O-RING-ORFS |
3 | 2287090 | SEAL-O-RING-ORFS |
59 | 3314040 | WIRE-BULK (59 DECIMETERS) |
2 | 3445673 | NUT-HEX |
2 | 3445675 | NUT-HEX |
1 | 4323185 | LOCK-NUT |
1 | 4324000 | BODY-STRAIGHT |
1 | 4327482 | BUSHING-SEALING |
1 | 4328142 | VALVE AS |
37 | 4329024 | CONDUIT(37 DECIMETERS) |
1 | 4329051 | SLEEVE |
1 | 4345499 | CAP NUT-CONDUIT |
1 | 4779352 | VALVE GP-MTG |
1 | 5249741 | SFWR GP-A3003 |
1 | 5638135 | HOSE AS |
1 | 5638136 | HOSE AS |
1 | 5638137 | HOSE AS |
1 | 5638138 | HOSE AS |
1 | 5638139 | HOSE AS |
1 | 5638141 | HOSE AS |
1 | 5638142 | HOSE AS |
1 | 5638143 | HOSE AS |
1 | 5638144 | HOSE AS |
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 45% 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 Service Manual if/as necessary and see Special Instruction M0098575, "Procedure to Update the Brake Pilot Circuit on Certain 794 AC Off-Highway Trucks" for the rework procedure. |
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OWNER NOTIFICATION
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Owners in the following countries will receive the attached Owner Notification: US Canada Australia New Zealand |
SERVICE CLAIM ALLOWANCES
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NOTE: This is a 20.0-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. |
MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE. |
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EXAMPLE COPY OF OWNER NOTIFICATION XYZ Corporation 3240 Arrow Drive Anywhere, YZ 99999 SAFETY - PRODUCT IMPROVEMENT PROGRAM FOR INSTALLING REDUNDANT BRAKE PILOT LINE CIRCUIT ON CERTAIN 794 AC OFF-HIGHWAY TRUCKS MODELS INVOLVED - 794 AC Off-Highway Trucks Dear Cat Product Owner: A redundant brake pilot line circuit needs to be installed on the products listed below. These 794 AC Off-Highway Trucks do not have a redundant service brake pilot line circuit to enable activation of the service brakes in the event of a single component failure. If a service brake pilot circuit fails a service brake system failure will occur that may, in conjunction with other factors or circumstances, result in a risk of personal injury or death. . You will not be charged for the service performed. Contact your local Cat dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service. If you are no longer the owner of this product(s), please contact your local Cat dealer so that our records can be updated. You may now search for open Safety Service Letters by entering your product serial number(s). Visit the CAT.COM/SAFETY website and click on SUPPORT, then SAFETY SERVICES for more information. Please refer the dealer to their Service Letter dated 04Jan2019 when scheduling this service. We regret the inconvenience this may cause you, and urge you to have this service performed for your safety and satisfaction. Caterpillar Inc. Identification #(s) Attached to 04Jan2019 Service Letter |
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