1993/10/25 Caterpillar

New Clips With Grommets Used On Large Water Lines Prevents Wear{1380}

Usage:

777C (4XJ),
785B (6HK),
789B (7EK),
793B (1HL) Trucks;
994 (9YF) Loaders

Description of Change: New clips used on large water lines now have rubber grommets to protect the tubes from wear by the metal clamps.

Adaptable To: The new and former components are identified in the charts. The changes are in effect as follows:

777C Truck 4XJ272

785B Truck 6HK183

789B Truck 7EK178

793B Truck 1HL54

994 Loader 9YF59

The changes are adaptable to earlier production.

Illustration 1. Location of components on 7W0486 and 9Y8928 Water Bypass Lines Group.

NOTE: The above change can be adapted to 777B, 785, and 789 Trucks; earlier 994 Loaders.

NOTE: The above change can be adapted to 793 Trucks.

Illustration 2. Location of components on 1W5222 Lower Water Lines Group.

NOTE: The above change is adaptable to earlier 785 and 785B Trucks.

Illustration 3. Location of components on 2W3706 and 1030888 Lower Water Lines Group.

NOTE: The above change is adaptable to earlier 789 and 789B Trucks; 994 Loaders.

Illustration 4. Location of components on 9Y8906 Lower Water Lines Group.

NOTE: The above change is adaptable to earlier 793 and 793B Trucks.

Caterpillar Information System:

1993/10/25 Pre-Strikeoff Plates With Angled Deflector Available For VIP Screeds{6646}

1993/10/25 Stronger Drive Chains Available For Parts Service{3261}

1993/10/25 Heavy-Duty Seal Kit Availble For Servicing Brake Calipers{4256,4250}

1993/10/25 Change In The Assembly Procedure Of The Damper In The Parking And Service Brake Group Provides Greater Reliability{4151,4267}

1993/10/25 New Fan Guards Used In Suction Fan Group{1360}

1993/10/18 Longer Bolts Required With New Spacer Block {1124}

1993/10/18 New Cylinder Head, Spacer Block, And Head Gasket Available {1101,1124,1221}

1993/10/18 24V Fog Lamp Now Available {1400}

1993/10/18 Curved Profile Nosing Bars Are Now Used With The VIP Screed {6643}

1993/10/18 Checking Tightening Torque Of Wheel Assembly Bolts No Longer Necessary At Predelivery {4202}

1993/10/18 Procedure For Tightening Tapered Vertical Hitch Pins {7113,7100}

1993/10/18 Optional Dash Decal Offers English Text Instead Of International Symbols {7405}

1993/10/25 New Bracket Replaces Heat Shield In Turbocharger Support Group For Additonal Strength{1050,1073}

1993/11/01 New Thicker Front Wheel Castings Are Used To Increase Wheel Life{4201}

1993/11/01 New Precharge Pressures For Trucks With Two Steering Accumulators{4331}

1993/11/01 Serviceable Parts Available For Tilt Cylinder Load Control Valve Groups{5104,5117,5123,5127}

1993/11/01 Serviceable Parts For Water Spray Pump{5614}

1993/11/01 High Pressure Wash Kit Replaces High Pressure Pump To Improve Service Life{5614}

1993/11/01 Check Valves Now Used In Hydraulic Steering Circuit To Prevent Steering Kickback{5067}

1993/11/01 Sealant Replaces A Gasket In Oil Pan Groups{1302,7555}

1993/11/09 Effort Needed To Depress And Hold The Foot Accelerator Pedal Can Be Reduced{1265,1250}

1993/11/09 Rear Axle Lubricant Now Being Offered{3278}

1993/11/09 Improved Window Seals And Sealing Procedure Used On Most Caterpillar Machines{7300,7310}

1993/11/09 New Cylinder Block Groups Have Additional Material Added To The Camshaft Bore Area{1201}