1982/08/16 Caterpillar

Lubrication Of Input Shaft Bearings In Final Drive{4091}

Usage:

235 ( 32K ) Excavators and 235 ( 81X ) Front Shovels, 227 Loggers

SUPPLEMENT: 10/11/82

SERVICE MAGAZINE, AUGUST 16, 1982, PAGE 14. In the article, "Lubrication Of Input Shaft Bearings In Final Drive," add 227 Loggers to the subtitle. Also, change the last paragraph to read: "Make a note of this article in the Disassembly And Assembly Manuals for 235 Excavators And Front Shovels And 227 Loggers."

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

Reference: Service Magazine, February 5, 1973, Page 4. The article "Adding Oil After Final Drive Disassembly ..." is about the same subject as this article, but it is for 225 Excavators.

Any time the final drives for 235 Excavators or 235 Front Shovels and 227 Loggers are disassembled then assembled, oil must be added to the input shaft cavity in each final drive before the machine is put back into operation. This will prevent a possible failure of the input shaft bearings.

The input shaft cavities hold approximately 1 liter (1 quart) of oil. This is the same kind of oil used in the final drives. See the Lubrication And Maintenance Guide. Add the oil to the input shaft cavities through the hole for the 8K3584 Relief Valve. See the illustration.

After the input shaft cavities are filled, fill the remainder of the final drives with oil according to the instructions in the Lubrication And Maintenance Guide.

Make a note of this article in the Disassembly and assembly Manual for 235 Excavators and Front Shovels.

Location of 8K3584 Relief Valve.

Caterpillar Information System:

1982/08/16 New Latch Used In Cab Door Groups{7308}

1982/08/16 Modification Of 2P8315 Bracket Assembly{0652,1286}

1982/08/16 Improved Circle Tooth Segment{6152}

1982/08/16 New Exhaust Manifold Permits Expansion To Prevent Cracks{1059}

1982/08/16 Use Only Correct Parts To Fasten Drive Gears To Winch Drums{5401,5402}

1982/08/16 New Engine Oil Filter Group Uses Spin-On Type Filter Assemblies; Conversion Group Available{1306,1307,1318}

1982/08/16 Turbocharger Lubrication Valve Removed; Conversion Group Available{1309,1307}

1982/08/16 New Rear View Mirrors Available{7319}

1982/08/16 New Compression Ring Available For Control Of Excessive Oil Consumption{1215}

1982/08/16 New Hardened Gears Used In Engine Camshaft Assemblies And Accessory Drives{1207,1212}

1982/08/16 Make Set Point Measurements Easier With The 6V4060 Engine Set Point Indicator{0651}

1982/08/09 New Torque Specification For Fuel Injection Pump Bushing{1251,1253}

1982/08/16 Output Transfer Gear Case Bearings Have More Capacity{3159,3176}

1982/08/23 New Thrust Washer Can Prevent Wrong Oil Sample Readings{1102}

1982/08/23 Parts Service Identification Of O-Ring Seal Used In Dry Chemical Agent Valve And Cylinder Group{7401}

1982/08/23 Increased Torque Values For Hardware In Service And Parking Brake Groups{4251,4267}

1982/08/23 New Mechanical Switches Are Available For Parts Service{7332,1400}

1982/08/23 Repair Kit For The 5P9700 Hose Cutter Is Available{0623,1380}

1982/08/23 New Time Delay Conversion Groups Available{7400}

1982/08/30 Added Methods To Decrease The Effects Of High Sulfur Fuels{1355,1280,1318,1000}

1982/08/30 New Radiator Core Assembly Has Full-Frame Reinforcement Plate For Longer Service Life{1353}

1982/08/30 Make Sure Generator Leads Do Not Move Against Frame{4459}

1982/09/06 Vacuum Tester Checks For Leaks Between Valve Face and Seat{0651,1103,1105}

1982/09/06 Repair Kits For Service Brakes Now Available{4260,4261,4262,4251}