1999/11/22 Caterpillar


Constant Torque Hose Clamp Now Available {7550,7553}

Usage:


120H (6TM, 5FM, 9FN, 4MK, 2AN, 6NM, 9YR),
135H (7MM, 8WN, 3YK, 7PM),
12H (5ZM, 4ER, 4XM, 8MN, 2WR, 2LR, 2GS),
140H (8JM, 5HM, 2ZK, 9TN, 9ZN, 8KM, 3AS),
143H (1AL),
160H (9JM, 2FM, 9EJ, 3GM, 6WM, 2HS),
163H (5AK) Motor Graders

Description of Change: A constant torque hose clamp is available for the above listed machines. Due to the extreme temperature changes, a hose will heat set which causes the hose clamps to loosen resulting in leaks. The new, constant torque hose clamp can be used in place of any standard hose clamp.

Adaptable To: The new 8T-4983 Hose Clamp directly replaces the former 9M-2904 Hose Clamp. The changes to the 8W-6235 Transmission Oil Lines Group and the 8W-6215 Transmission Oil Lines Group are adaptable back to earlier machines.


Illustration 1.
The new 8T-4983 Hose Clamp. Tighten to a torque value of 10 to 12 N·m (7.4 to 8.8 lbs ft).


Illustration 2.
Right Side View of a typical transmission oil lines group.


Illustration 3.
View A-A from Illustration 2. Typical location of the new 8T-4983 Hose Clamp (Item 1).

Caterpillar Information System:

1999/11/22 Maintaining Motor Grader Circle Improves The Pinion Service Life {5207,6153,6154,6155}
1999/11/22 New Spacer For Hydraulic Filter And Rod Assembly In Hydraulic Tank And Filter Now Available {5056}
1999/11/22 New Lamps For Instrument Panel Have Improved Service Life {1429,7451}
1999/11/22 Features Changed In Challenger Technician (CT) 2.3 {5990,7620}
1999/11/22 New Resolver Valve Has Backup Ring To Prevent Seal Extrusion {5051}
1999/11/15 New High Strength Piston Bolts For Threaded Gland Cylinders {5101,5102,5104,5106}
1999/11/15 Correction To Schematic, Electrical System, 950G And 962G Wheel Loaders, IT62G Integrated Toolcarriers, SENR1393-01 {0374,7566}
1999/11/15 New Cable Anchor Assembly Improves Cable Retention {5401}
1999/11/15 New Engine Breather Tube For Harvesters And Forwarders {1317}
1999/11/15 Alternate Torque Values For The Wheel Rim Mounting Bolts For The Small Off-Highway Trucks {4201}
1999/11/15 Procedure To Relocate The Sensor For The Steering Pressure On The 793C Off-Highway Truck {7601}
1999/11/15 Improved Air Breather Available For Certain Off-Highway Trucks {3260,4257}
1999/11/22 New Cage And Adapter Assemblies Available For Power Take Off (PTO) Drives {1207}
1999/11/22 New Auxiliary Drive Adapter Assembly And Shaft Assembly Available {1207}
1999/11/22 Special Instruction, REHS0521, Available For Converting Off-Highway Trucks From A Tu-Flo 750 Air Compressor To A Tu-Flo 1000 Air Compressor {1803}
1999/11/22 Special Instruction Available For Correct Installation Of 170-1601 Signal & Pressure Reducing Valve {4337}
1999/11/22 Correct Installation Of Steps {7254}
1999/11/22 Procedure To Tighten Bolts And To Shim The Rear Drive Axle Is Available {3278}
1999/11/22 Cylinder Head Bolt Re-torque Not Necessary For 3003, 3013, 3014, And 3024 Engines (All Applications) {1100}
1999/11/22 Transmission Oil Pump Has Internal Air Bleed Orifice {3066}
1999/11/22 Improved Brake Piston Eases Installation {4250}
1999/11/22 Improved Hydraulic Filter Provides Increased Filtration {5068}
1999/11/22 Hydraulic System Pressure And Engine Idle Settings For Telehandlers {5050,1000}
1999/11/22 Access Platform Schematics For Telehandler {7566,5050}
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