2009/07/27 Caterpillar


New Software Released in order to Reduce Harsh Transmission Shifting {7620}

Usage:

966H A6D
Wheel Loader:
950H (S/N: N1A1-UP; M1G1-UP; K5K1-UP)
962H (S/N: N4A1-UP; M3G1-UP; J6J1-UP; K6K1-UP)
966H (S/N: A6D1-UP; A6G1-UP; A6J1-UP)
972H (S/N: A7D1-UP; A7G1-UP; A7J1-UP)

Description of Change: A new software has been released in order to activate closed loop modulation on the above listed Medium Wheel Loaders. The software also adds load compensation on speed shifts. The new software will provide smoother shifting and better propulsion while the machine climbs a grade with a load.

Adaptable To: The new 348-3277 Power Train Software Gp has been released in order to provide smoother shifting and load compensation on speed shifting. The software is adaptable to all Series H machines.

The new software is adaptable to the following machines.

  • 950H (S/N: K5K1-2804; M1G1-UP; N1A1-3139)

  • 962H (S/N: J6J1-UP; K6K1-436; M3G1-UP; N4A1-1236)

  • 966H (S/N: A6D1-2380; A6G1-3854; A6J1-UP)

  • 972H (S/N: A7D1-840; A7G1-1226; A7J1-UP)

The new software is effective with the following machines.

  • 950H (S/N: K5K2805-UP; N1A3140-UP)

  • 962H (S/N: K6K437-UP; N4A1237-UP)

  • 966H (S/N: A6D2381-UP; A6G3855-UP)

  • 972H (S/N: A7D841-UP; A7G1227-UP)

Note: An interim software was released to production which contained the enhancements for the software. The serial numbers are listed below. Do not reflash the following machines:

  • 950H (S/N: K5K2805-2900; N1A3140-3206)

  • 962H (S/N: N4A1237-1257; K6K437-466)

  • 966H (S/N: A6D2381-2245; A6G3855-3920)

  • 972H (S/N: A7D841-887; A7G1227-1260)

Caterpillar Information System:

2010/01/18 New O-Ring Seals Are Used on the Front Housings of 3500 Engines {1151, 1162, 1166, 1206, 1207}
Procedure to Improve the Starting Capability on 627G and 637G Wheel Tractor-Scrapers{0645, 1456, 1920, 7620} Procedure to Improve the Starting Capability on 627G and 637G Wheel Tractor-Scrapers{0645, 1456, 1920, 7620}
2010/02/03 A New "B" Pin Bearing Has Been Designed for the Bucket of Medium Wheel Loaders that Are Used As Steel Mill Machines Working in Severe Applications {6107, 7000}
2009/07/27 A New Procedure Is Used for Improving the Starting Capability on 627G and 637G Wheel Tractor-Scrapers {0645, 1456, 1920, 7620}
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C9.3 Engines for Caterpillar Built Machines Soot Antenna - Remove and Install
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D6T Track-Type Tractor Camera - Clean/Adjust
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966M and 972M Wheel Loaders Power Train, Steering, Braking, Hydraulic & Machine Systems Check Valve (Brake Accumulator)
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966H and 972H Wheel Loaders Declaration of Conformity
IT38H Integrated Toolcarrier and 938H Wheel Loader Declaration of Conformity
C9.3 Engines for Caterpillar Built Machines Fumes Disposal Filter - Remove and Install
C9.3 Tier 4 Final Engines Diesel Particulate Filter Has High Ash Load
D7E Track-Type Tractor Hydraulic, HVAC, and Electrical Systems Implement Droops Before Raising
2009/09/28 A New Slip Joint Group Improves Service Life of the Drive Shaft {3251}
953D, 963D and 973D Track-Type Loaders Hydraulic System Hesitates
966H Wheel Loader and 972H Wheel Loader Power Train Bypass Switch (Power Train Oil Filter)
2009/07/20 Improved Linkage Bearings Are Now Used on 988G and 988H Wheel Loaders {6501}
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