1998/08/17 Caterpillar

Improved Pilot Valve Group Now Available {4805}

Usage:

980G (2KR, 2SR, 9CM),
Wheel Loader, 824G (4SN),
Wheel Tractor, 825G (6RN),
Soil Compactor, 826G (7LN) Landfill Compactor

SUPPLEMENT: JANUARY 25, 1999

Service Magazine SEPD0430, Article 14, Page 18, August 17, 1998; "Improved Pilot Valve Group Now Available".

Disregard this article. See Service Magazine SEPD0453, Article 31, Page 21 titled "Improved Solenoid Valve Group Available".

--------------- END SUPPLEMENT ---------------

Reference: Service Manual Module, SENR5891, "Electronic Implement Control System".

Description of Change: An Improved pilot solenoid valve group is now available. This valve group features a robust molded coil for improved moisture integrity and vibration resistance.

Adaptable To: The new 152-6761 Pilot Valve Group is a direct replacement for the 129-4023 Valve Group.

Refer to the chart for a list of service repair parts for the new 152-6761 Valve Group.

NOTE: Effective serial numbers for the introduction of the new valve group are currently not available.

Caterpillar Information System:

1998/08/17 Use 123-4588 Plate Gauge To Measure Shim Pack Thickness {4314}

1998/08/17 Remanufactured Wheel Stations And Wheel Station Components For Off-Highway Trucks {3001,4051}

1998/08/17 Use 150-2505 Maintenance Tool Group For Pipelayer Maintenance {0600}

1998/08/17 New Integral Seal Replaces Gasket In Engine Water Lines Groups {1380}

1998/08/17 New Service Meter Increases Reliability {7480}

1998/08/17 Belt Selection, Bolt Torque, And Special Application Drive Wheel Scraper Maintenance Recommendations {4199}

1998/08/10 Use 147-1758 Filter Element, 134-5901 Spares Kit, 135-6547 Auxiliary Filter, and 1R-0712 Fuel Filter to Perform Maintenance for Hartridge AVM Test Bench {1250,0782}

1998/08/10 Use Recommended Repair Parts for Torque-Turn Track Wrench 5000 {4172,0602}

1998/08/10 Use 146-1738 Borescope for Internal Inspection of Caterpillar Products {0777}

1998/08/10 Use Hydraulic Torque Wrenches and Accessories for High Torque and/or Low Clearance Applications 132-8112 HY-1XLT 132-8119 HY-3XLT 132-8126 HY-5XLT 132-8133 HY-10XLT 1U-6221 HY-2XLCT 132-8159 HY-4XLCT 132-8183 HY-8XLCT 132-8206 HY-4ULC 132-8223 Power

1998/08/10 Heavy-Duty 151-0968 Variable Speed, Inch, Reversing Drill now available {0600}

1998/08/10 Foot Rests Can Be Added To Certain Asphalt Compactors {7253,7312}

1998/08/17 Service Code May Be Logged If Implement Levers Are Moved Prior To Start Up {5737,6116,7490}

1998/08/17 Correction To Operational Check And Zero Check For LSI (Type 2 System) {7455,7400,1706,1408}

1998/08/17 Use 125-0201 Guide Assembly For Camshaft Installation {1202}

1998/08/17 Use 150-3992 And 150-3993 Timing Pins For Fuel Injection Pumps {1251,1251,1000}

1998/08/17 Use 136-3113 Timing Gauge To Time Engines With Bosch Pump {1251}

1998/08/17 Use 146-2597 Rocker Arm Bearing Installation Tool To Hold Push Rods In Place {1208}

1998/08/17 Service Manual And Parts Manual Literature Available {0374,0375}

1998/08/17 Heavy Duty, High Intensity Flashlights 149-8322 Flashlight 149-8331 Flashlight 149-8333 Flashlight 149-8334 Flashlight 149-8335 Flashlight 149-8327 Helmet Light Holder {0701}

1998/08/17 Use 148-9610 Personal Computer Cart To Hold PC, Monitor, Printer, And Data View Hardware {7600}

1998/08/24 New Custom Product Support Literature Is Available For 785B Off-Highway Trucks Equipped With 4Z-6509 Wiggins Service Center (Factory Installed) {0374,7513}

1998/08/24 Wheel Bearing Adjustment Procedure For 789 Cast Wheel And High Capacity Bearings {4051,4066,4208}

1998/08/24 Supplement To Correct Front Drive Shaft Group Torque {3250}