PRODUCT IMPROVEMENT PROGRAM FOR SETTING THE HYDRAULIC FAN SPEED ON CERTAIN 794 AC, 796 AC, AND 798 AC OFF-HIGHWAY TRUCKS Caterpillar


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PRODUCT IMPROVEMENT PROGRAM FOR SETTING THE HYDRAULIC FAN SPEED ON CERTAIN 794 AC, 796 AC, AND 798 AC OFF-HIGHWAY TRUCKS [UEBE0010]
HYDRAULIC SYSTEM
PUMP GP
PRODUCT IMPROVEMENT PROGRAM FOR SETTING THE HYDRAULIC FAN SPEED ON CERTAIN 794 AC, 796 AC, AND 798 AC OFF-HIGHWAY TRUCKS
UEBE0010-02

16Dec2019
(Revised 11May2020)


U-760
A-596
D-661

 

Priority

  
  

PRODUCT IMPROVEMENT PROGRAM FOR SETTING THE HYDRAULIC FAN SPEED ON CERTAIN 794 AC, 796 AC, AND 798 AC OFF-HIGHWAY TRUCKS

1356 5070 5073
PI33116
NOTE:

AVSpare’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 AVSpare.

NOTE:

This Program must be administered as soon as possible. When reporting the repair, use "PI33116" as the Part Number and "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. Exception: If the repair is done after failure, use "PI33116" as the Part Number, "7751" as the Group Number, "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 AVSpare product analyst.

 
NOTE:

This Revised Service Letter replaces the 16Dec2019 (Revised 06Jan2020) Service Letter. Changes have been made to the Affected Product.


COMPLETION DATE

TERMINATION DATE

30Jun2020 31Dec2020

PROBLEM

The fan over-speed setting needs to be inspected on certain 794 AC, 796 AC and 798 AC Off-Highway Trucks. If the setting of the fan over-speed is too high, it can cause the spider assembly and related components to fail.

AFFECTED PRODUCT

Model Identification Number
794 AC HRT00100-00102

MN500052-00056

MT500100-00118, 126-128
796 AC  HRZ00501-00502
798 AC  ST700400-00401

PARTS NEEDED

No parts needed for this program

ACTION REQUIRED

Inspect the fan over-speed setting and ensure it is set to 620 rpm. Refer to UENR2267, Testing and Adjusting, "Piston Pump (Hydraulic Fan) Pressure - Test and Adjust", for additional information.

OWNER NOTIFIAVSION

Owners in the following countries will receive the attached Owner Notification:
US
Canada

SERVICE CLAIM ALLOWANCES

AVSpare
Dealer Suggested
Customer Suggested
Parts %
Labor Hrs%
Parts %
Labor Hrs%
Parts %
Labor Hrs%
100%
100%
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.
 
 
MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.
 
 
 
EXAMPLE COPY OF OWNER NOTIFIAVSION

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR SETTING THE HYDRAULIC FAN SPEED

MODELS INVOLVED - CERTAIN 794 AC, 796 AC, AND 798 AC OFF-HIGHWAY TRUCKS

Dear Cat Product Owner:

The fan over-speed setting needs to be inspected on the products listed below. If the setting of the fan over-speed is too high, it can cause the spider assembly and related components to fail. 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. Please refer the dealer to their Service Letter dated 16Dec2019 when scheduling this service.

We regret the inconvenience this may cause you, and urge you to have this service performed as soon as possible to prevent unscheduled downtime.



AVSpare Inc.

Identification #(s)



Attached to 16Dec2019 Service Letter

Information System:

PRODUCT SUPPORT PROGRAM FOR INSPECTING AND REWORKING FRONT WHEEL BEARING RETAINER BOLTS ON CERTAIN 794 AC, 796 AC, AND 798 AC OFF-HIGHWAY TRUCKS
Product Link PL121SR (P/N 263-9088) May Remain in Power Mode 3
725, 730 & 730 EJECTOR Articulated Trucks, Loss of Positioning of Valve Spool and Overheating of Hydraulic Oil Eliminated by New Plug in Hoist Control Valve
System Malfunctions Related To The Injection Actuation Pressure Sensors In Excavators, Wheel Loaders, Engines, Track-Type Tractors and Track Loaders
Premature Wear of the Accessory Drive Thrust Washer on 793 Off Highway Truck Engines
Incorrect Seal Used to Repair Leaking Pilot Valves On Integrated Toolcarriers, Track Type Tractors, Wheel Dozers, and Wheel Loaders
THE 216-6195 LINK CAN RUB ON THE LIFT CYLINDER PIN ON SOME SKID STEER LOADERS & MULTI TERRAIN LOADERS
Impact of the Hurricanes on Fuel Supplies and Caterpillar Engines
740 EJECTOR Articulated Truck, Addition of Spacer Plates Avoids Contact Between Ejector Carriages and End Plates
Steering Column Harness Assembly Kinking on G/GII Medium Wheel Loaders
725, 730, 730 EJECTOR & 735 Articulated Trucks, Pinion Locknut for Field Service
Product Link PL121SR (P/N 263-9088) May Remain in Power Mode 3
PRODUCT SUPPORT PROGRAM FOR REPLACING THE BRAKE CHARGE\BRAKE COOLING PUMP GROUPS
PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REWORKING THE SERVICE BRAKE HOSE LINES ON CERTAIN 966M AND 972M MEDIUM WHEEL LOADERS
PRODUCT SUPPORT PROGRAM FOR REPLACING THE HEUI PUMP ON CERTAIN 773E OFF-HIGHWAY TRUCKS
PRODUCT SUPPORT PROGRAM FOR REWORKING THE REAR PUMP DRIVE LINES GROUP ON CERTAIN 994K WHEEL LOADERS
PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE EMISSIONS LABEL AND CORRECTING THE FLS SETTING ON CERTAIN C18 GENERATOR SETS
PRODUCT SUPPORT PROGRAM FOR INSPECTING BEVEL GEAR BOLTED JOINTS ON CERTAIN 797, 797B, AND 797F OFF-HIGHWAY TRUCKS
PRODUCT SUPPORT PROGRAM FOR INSTALLING PRODUCT LINK PL542 OR PL240B CELLULAR RADIO SYSTEMS ON CERTAIN CATERPILLAR PRODUCTS AND NON-CATERPILLAR PRODUCTS
PRODUCT SUPPORT PROGRAM FOR REPLACING INPUT TRANSFER GEAR CASE ON CERTAIN 793F, 793F CMD, AND 793F XQ OFF-HIGHWAY TRUCKS
PRODUCT SUPPORT PROGRAM FOR INSTALLING PRODUCT LINK PL542 OR PL240B CELLULAR RADIO SYSTEMS ON CERTAIN CATERPILLAR PRODUCTS
PRODUCT SUPPORT PROGRAM FOR UPDATING OR INSTALLING PRODUCT LINK PL641 CELLULAR RADIO SYSTEMS ON CERTAIN CATERPILLAR PRODUCTS
PRODUCT SUPPORT PROGRAM FOR INSTALLING PRODUCT LINK PL542 OR PL243 CELLULAR RADIO SYSTEMS ON CERTAIN CATERPILLAR PRODUCTS AND NON-CATERPILLAR PRODUCTS
PRODUCT SUPPORT PROGRAM FOR INSTALLING PRODUCT LINK PL542 OR PL243 CELLULAR RADIO SYSTEMS ON CERTAIN CATERPILLAR PRODUCTS