1999/11/15 Caterpillar


Improved Air Breather Available For Certain Off-Highway Trucks {3260,4257}

Usage:


784C (2PZ) Tractors;
785C (1HW),
785C HAA (5AZ),
789C (2BW),
793C (4GZ) Off-Highway Trucks

Description of Change: A larger paper element breather is now available for certain Off-Highway Trucks. The new breather extends the service interval to 500 hours. The element is used in different locations and may require additional parts when the element is installed. Use the following chart for parts requirement for your application.


Illustration 1.
Typical installation of the breather on the front service brakes.


Illustration 2.
Typical installation of the breather on the rear axle housing.

Effective With: The new breathers are effective with 784C (2PZ84), 785C (1HW100), 785C HAA (5AZ107), 789C (2BW122), 793C (4GZ129) and adaptable to earlier models.

Caterpillar Information System:

1999/11/15 Engine Oil Scavenge Pumps Use New Hardened Shaft Assemblies {1312}
1999/11/15 Temperature Sensor Changes Improve Reliability {1906,3290}
1999/11/15 Implement Valve Kit Incorporates Improved Flow Limiters And Compensators {5051}
1999/11/08 Download Flash Files By Using The Caterpillar Service Information System (SIS) Or SIS Web {1901,1920}
1999/11/08 New Feed Roller Wheel Group And Nuts Used {6328}
1999/11/08 Individual Components Of The Rolling Hoses Are Available As Separate Service Parts {5057}
1999/11/08 Low Idle Settings For New, Emission Engines {1264,1000}
1999/11/08 New Remote Bogie Axle Fill Tube Used {4192}
1999/11/08 New Solenoid Valve (Cold Start) Used {5050,5479}
1999/11/08 New Water Pumps Are Now Being Used On Certain Asphalt And Pneumatic Compactors {5614}
1999/11/08 A Special Instruction For Installing A Water Spray Kit On A Pickup Broom Is Now Available {5612}
1999/11/08 A Special Instruction For Installing A Water Spray Kit On A Cold Planer Is Now Available {5612}
1999/11/15 Procedure To Relocate The Sensor For The Steering Pressure On The 793C Off-Highway Truck {7601}
1999/11/15 Alternate Torque Values For The Wheel Rim Mounting Bolts For The Small Off-Highway Trucks {4201}
1999/11/15 New Engine Breather Tube For Harvesters And Forwarders {1317}
1999/11/15 New Cable Anchor Assembly Improves Cable Retention {5401}
1999/11/15 Correction To Schematic, Electrical System, 950G And 962G Wheel Loaders, IT62G Integrated Toolcarriers, SENR1393-01 {0374,7566}
1999/11/15 New High Strength Piston Bolts For Threaded Gland Cylinders {5101,5102,5104,5106}
1999/11/22 New Resolver Valve Has Backup Ring To Prevent Seal Extrusion {5051}
1999/11/22 Features Changed In Challenger Technician (CT) 2.3 {5990,7620}
1999/11/22 New Lamps For Instrument Panel Have Improved Service Life {1429,7451}
1999/11/22 New Spacer For Hydraulic Filter And Rod Assembly In Hydraulic Tank And Filter Now Available {5056}
1999/11/22 Maintaining Motor Grader Circle Improves The Pinion Service Life {5207,6153,6154,6155}
1999/11/22 Constant Torque Hose Clamp Now Available {7550,7553}
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