Follow Recommendations Given In Special Instructions For Modification Of Rollover Protective Structures (ROPS) At All Times{7323,7325}
Usage:
Several states in the United States have enacted and are enforcing strict noise control laws. In order to comply with these laws, customers and users have had to add sound suppression material to the Rollover Protective Structures (ROPS) on machines not equipped with sound suppression cabs. This addition can involve welding. Indiscriminate welding on ROPS for any reason can weaken the structure and nullify the ROPS certification. To prevent this possibility, we recommend that, if any customers ask you to weld on the ROPS of their machines, you check the Special Instructions, Form SEHS6929, "Repair And Maintenance Of Rollover Protective Structures" before attempting this work.
Caterpillar Information System:
1979/09/03 Only One Dowel Pin Is Now Used To Hold The Thrust Bearing In The Correct Position{1053,1052}
1979/09/03 Use Caution To Prevent Damage To Plastic Check Valve In Hydraulic Oil Tank And Transmission Oil Tank Drain{5056,3177}
1979/08/27 New Design Thrust Plate Used In Crankshaft Group{1201,1202,1203}
1979/08/27 New Rocker Arms And Rocker Arm Shaft Have Improved Lubrication{1102}
1979/08/27 Engine Oil Viscosity Changed To SAE 10W/30 For Shipment From All U. S. Factories{1318}
1979/08/27 Hardened Washers And Increased Torque Are Now Used On The Bolts Which Fasten The Circle Drive Group To The Circle Drawbar{5207,6153}
1979/08/27 6V190 Clamp Is Available For Use On Sleeve Metering Fuel Systems{0626,1250}
1979/08/27 New Governor Housing Assembly Used In Governor And Fuel Injection Pump Group{1253,1264}
1979/08/27 Steering System Improvements Prevent Possible Damage To Steering Cylinder Sockets{4303,4304,4305,4322}
1979/08/27 New Seal For Precombustion Chamber Has More Resistance To Heat And Steam{1106}
1979/08/27 Why Engines Are Damaged By Fuel Sulfur{1104,1216,1280,1318,1215}
1979/08/20 New Rear Cover And Gasket Used On Water Pump{1361,1350}
1979/09/03 Important: Use Only 8N4029 Fan On 769C Trucks And 768C Tractors{1356}
1979/09/03 Quick Disconnect Coupling On Optional Modification Of 5P4150 Nozzle Tester Permits Faster Exchange Of Adapters{0651,1254}
1979/09/03 Improved Wire Assembly For Glow Plugs{1403}
1979/09/03 Improved Hardware Now Used To Fasten Front Suspension Cylinder To Frame{7201}
1979/09/10 Insulation Sleeve For 5P7360 Tach Generator Now Available {7462}
1979/09/10 Stronger Bolt Now Used With Exhaust Manifold {1059,1307}
1979/09/10 6V2055 High Vacuum Grease Gives Better Oil Seal {1052,1053,1077,0682}
1979/09/10 Undercarriage Disassembly And Assembly Procedures And Specification Charts Are Available {4150,4159,4154,4171,4180}
1979/09/10 New Gasket Used In Water Lines Group For Aftercooler {1380,1063}
1979/09/10 Gasket Added To Rear Wheel Spindle Housing For A Better Seal {4205}
1979/09/10 Different Grease Fitting Now Used In Fan Drive Group {1359}
1979/09/10 Recommendation For Use Of A FLEX-HONE On 1100, 3100 and 3200 Series Engines {1201}