1997/08/18 Caterpillar

New Constant Torque Hose Clamps Improve Heating And Air Conditioning System {1808,1812}

Usage:

824G (4SN) Wheel Tractors, 825G (6RN) Soil Compactors, 826G (7LN) Landfill Compactors, 980G (2KR, 9CM, 2SR) Wheel Loaders

Description of Change: New constant torque hose clamps reduce leaks and cab glass fogging by providing a tight, consistent seal on the air conditioner and heater lines. The former clamps could loosen under heavy vibration conditions, allowing small amounts of water to leak and condense on the cab window glass. The new hose clamps should be tightened to 4.5 ± .5 N·m (3.31 ± .37 lb ft).

If the water hose is damaged, the hose can be replaced with 136-1953 Bulk Hose.

Adaptable To: The new 9X-2488 Hose Clamps replace the former 5D-1026 Hose Clamps (not canceled) which are part of 115-0627 Air Conditioner Group, 115-0628 Heater Group, and 110-8138 Heater Lines Group. The new 9X-2488 Hose Clamps are effective with the 824G (4SN347-Up) Wheel Tractors, 825G (6RN314-Up) Soil Compactors, 826G (7LN275-Up) Landfill Compactors, and 980G (2KR1132-Up) Wheel Loaders. The new hose clamps are adaptable to first production for the machines listed.

Caterpillar Information System:

1997/08/18 Implement Control Levers Must Be Centered To Start Machine {5000,5063}

1997/08/18 Improved Elbow Design For Draining Oil Filters {1308}

1997/08/18 New Clamps And New Hose Now Used for Water Heater Lines To Improve Service Life {1383,1812}

1997/08/18 New Transmission Control Group Improves Operator Comfort {3065}

1997/08/18 Changes To VIMS Truck Payload System {7601}

1997/08/18 New Engine Arrangements For High And Low Altitude Applications {1000}

1997/08/18 Information Is Corrected On The 793C Engine Information Plate {1000,7557}

1997/08/18 Four Wheel Drive All-Wheel-Steer Dead Engine Brake Inspection {4250,4265}

1997/08/18 New Flagpin Retention Method Improves Torsional Strength {7120}

1997/08/18 Improved High Ambient Cooling Configuration Available {1205,1350,1357,1384}

1997/08/18 Improved Three-Point Hitch Rockshaft Seal And Wear Ring Prevents Dirt Packing {7120}

1997/08/11 Improved Switches Now Used To Prevent Open Contacts{1423}

1997/08/18 Lubricity Limit Added To Preferred Distillate Fuel Recommendation {1280,7568}

1997/08/18 Use Separate Sampling Pump For Oil and Coolant {7542,7577}

1997/08/18 "Date Updated" Displayed In Parts Manuals On The Service Information System (SIS) {7567}

1997/08/25 Torque Increased For Piston Retaining Nut In Swing Cylinder Groups{5105,7562}

1997/08/25 New Loader Pin For Some B-Series Backhoe Loaders{6118,6119}

1997/08/25 Extended Life Coolant Now Used To Increase Service Life{1352}

1997/08/25 New Duo-Cone Seal Retainers Resist Rotation{4201,7561}

1997/08/25 Revised Service Manual Content Pages Available{0374}

1997/08/25 Correct Procedure For Installing Hydraulically Actuated Electronic Unit Injectors (HEUI){1290}

1997/08/25 New Parts Manual Format Used For Certain Caterpillar Products{0374}

1997/09/01 New Cap Retaining Bolts Used In The Rear Suspension Group To Improve Reliability {7217,7215}

1997/09/01 New Midshaft Bearing Assemblies Now Used To Increase Service Life {7551,3253,4056}