1988/12/26 Caterpillar

New Coolant Flow Switch Available {7422,7425}

Usage:

D8L, D9L, 615, 631E, 637E, 651E, 657E, 768C, 772B, 776, 776B, 834B Tractors;
657E Scrapers;
245 Shovels;
769C, 773B, 777, 777B, 785 Trucks;
988B, 992C Loaders

Reference: This article supersedes a similar article in June 30, 1986 issue of Service Magazine.

A new coolant flow switch is available for the above machines. The new switch provides improved reliability.

The new 9W2343 Switch Assembly can be used to replace either 6N5284 or 6T9315 Switch Assembly. The 6V3000 Sure-Seal® Kit is required to install the new switch assembly in place of the 6N5284 Switch Assembly.

The 6N5284 Switch Assembly has one screw that connects to the EMS panel COOLANT FLOW input. The switch is grounded through its case. Installation of the new switch requires the addition of a ground wire.

The 9W2343 and 6T9315 Switch Assemblies are not grounded through the case. They have two wires with a Sure-Seal® connector. The additional wire is the ground.

Therefore, the 6V3000 Sure-Seal® Kit is required to make up the mating connector and ground connector for replacing the 6N5284 Switch Assembly.

Caterpillar Information System:

1988/12/26 New Governor Control Cable Used {1265}

1988/12/26 Be Sure Breathers Are Connected When Winches Are Installed {5163}

1988/12/26 Shorter Bolts Used For Bolt-On Cutting Edges {6801}

1988/12/26 Improved Boom Cylinder Lines {5057,5456}

1988/12/26 New Gas Cylinder Used In Operator's Console {7451}

1988/12/26 Check Bore Length Of Gear And Sleeve Before Assembling In Transmission {3061}

1988/12/26 Enlarge Lower Hook Openings On Three-Point Hitch Quick Coupler Group {7120}

1988/12/26 Check Load Height Before Transporting Machines {7500}

1988/12/26 New Muffler And Pipe Used; Low Idle Increased {1061,1062,1264}

1988/12/19 Twelve Bolts Used In Drum Support Bearing Retainer {8227}

1988/12/19 Operation Of Differential Lock {3264}

1988/12/19 Do Not Use Heli-Coils® To Repair Rocker Arm Assemblies On 5.4" Bore Engines {1123}

1988/12/26 Cylinder Block To Aftercooler Connectors {1063,1201}

1988/12/26 Procedure To Replace Studs In Bottom Wear Plate On VIP Screeds {8225}

1979/01/08 Check The Adjustment Of The Original Tachometer Before A New Tachometer Is Installed{7462}

1979/01/08 A New 6V29 Sleeve Metering Fuel System Pump Roll Pin Tool Is Used To Adjust And Make A Replacement Of Roll Pins In The Fuel Injection Pump Housing{0626}

1979/01/08 New 6V87 Gauge Measures Valve Stem Wear{0653,1105}

1979/01/15 5P9705 Tapered Rod Tool Group Used For Removal And Installation Of Piston Pin Bearings In Tapered Connecting Rods{0622,1214,1218}

1979/01/15 Removal And Installation Of Taper Type Bearings{0622,1214,1219}

1979/01/15 6V83 Emery Polishing Paper{0675}

1979/01/22 Current Chart For Dynamometer Adapters{0651,1000}

1979/01/22 Ether Starting Aid Groups Are Now Available{1456}

1979/01/29 Fuse And Wire Assembly Is Available For Protection Of Earlier 6N5906 Service Meters{7480}

1979/02/05 Federal Law Prohibits Tampering With Noise Control Systems{0116}