1984/07/02 Caterpillar


New Seals Help Prevent Leakage In Axial Piston (Slipper) Pumps And Motors{3201,3203,4351,5058,5070}

Usage:


215, 225, 245 Excavators;
227 Loggers;
120G, 130G, 140G, 14G, 16G Motor Graders

SUPPLEMENT: 08/20/84

SERVICE MAGAZINE, JULY 2, 1984, PAGE 5. Put a mark through the article "New Seals Help Prevent Leakage In Axial Piston (Slipper) Pumps And Motors". The 8T1142 and 8T1143 Seals are not available.

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

Description of Change: Two new lip-type seals are used in axial piston (slipper) pumps and motors for the above excavators and motor graders. The new seals have a rubber coating on the outside diameter. The rubber coating helps the seals conform to the housing bore. The new seals will help prevent leakage between the seal and the housing bore.

Adaptable As: The new 8T1142 Seal is a direct replacement for the former 4T2759 Seal. The new 8T1143 Seal is a direct replacement for the 1U1655 Seal. The new seals are adaptable to all earlier listed excavators and motor graders. See the illustration for location and installation of the seal.


Location and installation of seal.

Caterpillar Information System:

1984/07/02 Procedure Changed To Test Engines Out Of Chassis{1202,1205}
1984/07/02 New Crankshaft, Cylinder Block And Camshaft Used{1202,1201,1210}
1984/07/02 Modification To FT1488 Exciter Tester Group Allows Testing Of All Small Frame SR4 Generators{0785,4450,4467}
1984/07/02 Procedure To Clean Oil Passages In Crankshafts And Cylinder Blocks{0622,0675,1201,1202}
1984/06/25 New Rear Crankshaft Seal Group Used {1161}
1984/06/25 Improved Discs Used In No. 5 Rotating Clutch Of Transmission {3155,3150}
1984/06/25 New Cylinder Head Has Larger Mounting Holes For The Lifting Brackets {1100,1101}
1984/06/25 Oil Recommendations For Power Shift Transmissions {3179}
1984/06/25 New Transmission Center Shaft Improves Lubrication And Cooling To Sleeve Bearing {3150}
1984/06/25 New Vibration Damper Assembly Has Better Heat Resistance {1205}
1984/06/25 New Wheel Bearing Adjustment Procedure {4208}
1984/06/25 New Ammeter And Ammeter Calibrator Group Available {0651}
1984/07/02 Surface Grinding Of Compacted Graphite Iron Cylinder Heads{1101}
1984/07/02 Testing For Leaks In Oil Coolers With Removable Cores{1365,1366}
1984/07/09 New Disassembly And Assembly Tools Available For Fuel Ratio Controls{0600,1278}
1984/07/09 Modifications Can Be Made To Improve Distribution Of Exhaust Through The Truck Dump Body Ribs{7258,1059,1061,1062}
1984/07/16 New Relief Valve Guide Used In Oil Pump{1315}
1984/07/16 Alternator Available For General Use{1405}
1984/07/16 Use Caution When Handling Components That Contain Asbestos{0353}
1984/07/16 Toric Ring Seals Available For Duo-Cone Seals In Service And Parking Brake Group{4208,4250}
1984/07/16 New Mechanical Service Meter Used{7478}
1984/07/16 FT1886 Valve Spring Compressor Group Available{0600,1108}
1984/07/16 Use Vacuum Tester For Quality Control Check Of Water Pump Seal{0768,1361}
1984/07/16 Temporary Control Support Group For Machine Maintenance Is Available As A Service Tool{7253}
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