Improvements Made To Push Frame; Instructions To Make Reinforcements On Earlier Push Frames Available{6225}
Usage:
633D Scrapers
Description of Change: Improvements are made to the push frame of the 633D Scrapers with Serial Number 19W557-up. Some of the push frames on earlier machines have cracked in the areas shown in the illustration. Reinforcements are added to the push frame at these locations to prevent cracks. The part number of the bowl assembly did not change.
Arrows show crack locations.
Reinforcements can be added to the earlier push frame. Special Instructions Form No. SMHS7251 gives information on how to make and install the reinforcements.
Caterpillar Information System:
1978/02/13 Several Improvements Made To Lines Group In Area Of The Hitch{5057,5077}
1978/02/13 Complete Set Of Contact Points For Dial Indicators Is Now Available In One Group{0653}
1978/02/13 Replacement Seal Group For Water Pump Impeller Now Has All The Seal Parts Plus An Installation Tool{1361,0622}
1978/02/06 Probable Causes Of Low Fuel Delivery During Testing On Fuel Injection Test Benches{0650,1250}
1978/02/06 New Water Temperature Regulator Opens At 180°F (82°C){1350,1355,7304}
1978/02/06 Successful Engine Service-3208 Engine Booklet Is Available{1000}
1978/02/06 Stronger Clutch Housing Used In Variable Capacity Torque Converter{3102}
1978/02/06 Add New Measurement And Identification To FT904 Backlash Indicator{0653,3258}
1978/02/06 Adjustment Of Track Tension On Machines With One Carrier Roller Per Side{4150}
1978/02/06 Silicone Sealant Is Now Used To Keep Water Out Of The Steering Clutch Case{4059,4100,4106,4115}
1978/01/30 Air Line For Air Compressor Governor Now Connected To Outlet For Wet Air Tank{4272,1065,4278}
1978/01/30 Retaining Ring Of A New Design Now Used In Torque Converter Group{3100}
1978/02/13 Strip Added Under The Hinge For The Front Windshield On ROPS Cabs{7325}
1978/02/13 Check Degree Number On Timing Fixture Plate Assemblies{0650}
1978/02/20 New Transmission Valve Groups Increase Winch Line Pull When Transmission Is In Neutral{3150,3152,3157,3167,3100}
1978/02/20 Separate Parts Of Tire Valve Group Now Available For Parts Service{4202}
1978/02/20 Reinforcements For Front Frame{7051}
1978/02/20 Improved Lift Arm And Service Brace Now Used{0643,5102,6119}
1978/02/20 Muffler Mounting Group Now Used To Give More Support To Muffler{1062}
1978/02/27 Use New Thickness Gauge To Check For Reusability Of Transmission Disc Assemblies Made From F37 Clutch Friction Material{0653,3155}
1978/02/27 New Hose Assembly Used In Oil Lines Group For Brake Cooling{3154,4100}
1978/02/27 New Oil Specifications For Gearmatic Winches{5163}
1978/02/27 New Seal Assembly With Longer Ferrule Prevents Damage To Ferrule During Cylinder Head Installation{1100,1101,1300}
1978/02/27 Higher Capacity Bearing Used On Final Drive Pinion; Gives Increased Service Life{4091}