1996/03/25 Caterpillar


Hydraulic Valve Groups Use New Implement Quick Couplers{6129,5057,5051}

Usage:


Challenger 35 (8DN),
Challenger 45 (1DR),
Challenger 55 (7DM) Agricultural Tractors

SUPPLEMENT: 06/10/96

Service Magazine; March 25, 1996; Page 1; "Hydraulic Valve Groups Use New Implement Quick Couplers"for Challenger 35, Challenger 45, and Challenger 55 Agricultural Tractors. Disregard this article and see article with the same title in this issue.

--------------- END SUPPLEMENT ---------------

Description of Change: New quick couplers are being used on the hydraulic valve groups. The new coupler components reduce leakage, keep the coupler cleaner, and require lower coupling and uncoupling forces.

Adaptable To: The new quick couplers are effective with Challenger 35 (8DN0544), Challenger 45 (1DR1093), and Challenger 55 (7DM1) Agricultural Tractors. The new quick couplers are adaptable to all earlier Challenger 35, and Challenger 45 Agricultural Tractors.

The following chart shows the new serviceable part numbers and the quantities required for each of the groups.

See the following illustrations for part locations.


Implement quick couplers for 4-valve group.


Implement quick couplers.

Caterpillar Information System:

1996/03/18 Parts Manual Fuel Filter Lines Group Illustration Corrections {1262}
1996/03/18 Hose Cleaner Group And Tool Operating Manual Is Available {0600,5057}
1996/03/18 Special Instruction SEHS9824 Available For Cab Window Service Procedure {7310}
1996/03/18 New Governor Return Spring Improves Service Life {1265}
1996/03/18 Kits Available For Servicing 111-7087 Air Starting Motor Group {1451}
1996/03/18 New Body Pad Installation Procedure For Off-Highway Trucks {7258}
1996/03/18 New Screen Assembly Is Used To Prevent Contamination Of Steering Flow Control Valve Group {4307,5051}
1996/03/18 Special Instruction SEHS9931 Available for Improving Sound Reduction on "C" Series Challenger Agricultural Tractors {7329,7261,1062}
1996/03/18 New Track Alignment Procedure {4198}
1996/03/18 Belt Tensioner Cylinder Nitrogen Precharge Pressure Increased {4197}
1996/03/11 Working Load Limits For Forcing Screws, Puller Bolts and Studs{0700}
1996/03/11 Speed Sensor Group Contains New Gear Mesh Adjuster Parts For Feet Per Minute Encoder{7495}
1996/03/25 New Front Park/Turn Lamp Available And Now Used On "D" Series Trucks{1430}
1996/03/25 Off-Highway Trucks VIMS Software{7490,7601}
1996/03/25 Service Parts Available For Rear Signal Lamp Groups{1430,1432}
1996/03/25 Possible Sources of High Crankcase Blowby From Breather Tube{1317}
1996/03/25 Fuel Injection Pump Barrel Sealing Face Reconditioning{1251}
1996/03/25 Larger Air Compressors Available{1803}
1996/04/01 Rubber Hose Replaces Steel Tube In The Fuel Filter Lines Group {1256,1274}
1996/04/01 Improved Air Seat Group Now Used {7307,7312,7324}
1996/04/01 Procedure For Setting Articulation Sender {4806}
1996/04/01 Improved Scarifier Control Valve Group Provides Stable Function {5214}
1996/04/01 Drawbar Reinforcement Plate Prevents Cracking In Severe Work Applications {6153}
1996/04/01 Two Service Kits Are Available For The Fan Clutch In Machine Engines {1359}
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