1997/09/29 Caterpillar

Gussets Are Added To Oil Pan Assemblies{1302}

Usage:

784B (5RK) Off-Highway Tractors;
785 (8GB),
785B (6HK),
789B (7EK),
793B (1HL),
793C (4AR) Off-Highway Trucks;
994 (9YF) Wheel Loaders;
5230 (7LL) Excavators

Reference: Service Magazine; October 14, 1996; Page 26, "New Integral Seal Used In Oil Pan "Tee" Joint And New Oil Pan Sections Help Prevent Oil Leaks";

Service Magazine; April 7, 1997; Page 12, "New Integral Seal And Oil Pan Sections Reduce Possibility Of Oil Leaks At Oil Pan "Tee" Joint"

Description of Change: The front oil pan in the above machines powered by 3512, 3516, and 3516B Engines is improved. Gussets have been added to the rear edges of the front oil pan. The gussets improve the strength of the oil pan and provide better resistance to cracking.

Adaptable To: The improved 133-5924 Oil Pan Assembly is used in the above 789B and 793B Off-Highway Trucks, the 994 Wheel Loaders, and the 5230 Excavators. The improved 133-5929 Oil Pan Assembly is effective with the above 793C Off-Highway Trucks.

The 133-5974 Oil Pan Assembly is effective with the above 784B Off-Highway Tractors and the 785 and 785B Off-Highway Trucks.

NOTE: The oil pan assembly part numbers did not change.

Typical view of the improved oil pan assembly. (1) Gusset.

Caterpillar Information System:

1997/09/29 New Metal Guards Prevent Debris From Entering Into Cab{7310}

1997/09/29 New Hoist Cylinder Seals And End Cap Now Available For Service Repair{5102}

1997/09/29 Sensor Group-Suspension Control Is Improved With Increased Reliability And Moisture Resistance{1400}

1997/09/29 Service Manual Modules; SENR8609, "Schematic 769D Truck And 771D Quarry Truck Electrical Schematic". SENR1418, "Schematic 773D Truck And 775D Quarry Truck Electrical Schematic". These Service Manual Modules Are Found In Service Ma

1997/09/29 Hose Assembly Change To The Front Brake Breather Lines Group{4257}

1997/09/29 Torque Converter Tubing Improvement Provides Clearance {3103}

1997/09/29 Improvement To Air Conditioning Lines Group In The 793C Off-Highway Trucks For Reduced Engine Removal And Installation Time{1808,1809}

1997/09/29 New Cylinder Groups And Tube Assemblies For Stabilizers With Flip Over Pads{5468}

1997/09/29 New Flushing Valve Group Eliminates Possible Shut-Down Of All Wheel Drive System{5050}

1997/09/29 Strap Added To Retain Torsion Spring In Steering Control Group{4343}

1997/09/22 New Piston Crown Improves Service Life{1214}

1997/09/22 Improved Piston Crown Assembly Used In The Rod And Piston Group{1214}

1997/09/29 Bumper Spring Prevents Over Travel Of Handle For Pilot Valve Group{5059}

1997/09/29 Handling Instructions For Water Pumps{1361}

1997/10/06 Fuel Tank Filler Screen Available{1273,1710}

1997/10/06 Higher Capacity Fan Belts Now Used{1350,1356,1359}

1997/10/06 New Cab Mount Reduces Vibration{1710}

1997/10/06 New Fan Drive Absorber Increases Service Life{1358}

1997/10/06 New 100 Amp Alternator Now Available{1405}

1997/10/06 Shaft Seal Leaking In Implement Pump Groups{5070}

1997/10/06 Rotated Cylinder Cap Changes Location Of Hydraulic Line To Protect Line On Blade Lift Cylinder Group{5057,5102}

1997/10/06 New Cab Positioning Procedure For 24H Motor Graders{7301}

1997/10/06 New Differential Lock/Unlock Indicator Light Now Used With H-Series Update{7450,3264,3270}

1997/10/06 Improvements Made To H-Series Motor Graders{7475,1408,1429,3073,7304,7309,7450,7451}