1993/10/18 Caterpillar

Curved Profile Nosing Bars Are Now Used With The VIP Screed {6643}

Usage:

VIP Screeds

SUPPLEMENT: 12/13/93

Service Magazine, October 18, 1993, Pages 9 and 10. "Curved Profile Nosing Bars Are Now Used With The VIP SCREED" for Asphalt Pavers equipped with VIP Screeds. The chart, "Parts Needed For Extensions", has some incorrect part numbers. Insert the following chart in place of the last chart on Page 10.

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

The service parts replacement with the beveled cross section, nosing bars for the former production VIP screeds now have a curved cross section profile. In addition, the main portion of the screed is serviced with three, rather than the former two nosing bars. This configuration is similar to the design used with the current production 10-20B Extend-A-Mat screeds. In some paving applications, the profile change may improve screed performance and wear plate life. The three piece design for the main screed will prevent mat gouging with extreme crowning positions.

The new nosing bars are directly adaptable to all VIP screeds. It is extremely important that NO nosing bar profile mixing occurs during replacement. Mixing configurations (e.g., curved on the main, and beveled on the extenders) will result in adverse screed performance.

The following charts list the new nosing bar part numbers. (One each is required per screed change.)

Caterpillar Information System:

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}

1993/10/18 Bearings Are Used To Prevent Seizure Of Rear Suspension Cylinder Pins {3260,7051,7213}

1993/10/18 Proper Sizing Of Transmission Sleeve Bearing Replacement Necessary For Increased Service Life {3160}

1993/10/18 New Differential Group With Tapered Roller Bearings Used For Improved Product Reliability {3258}

1993/10/18 Torque Converter Stall Speeds On Backhoe Loader {3101}

1993/10/18 New Parking Brake Test Procedure {4267}

1993/10/18 New Pinion Bearing Cone Now Being Used To Prevent Bolt Failure {3280}

1993/10/11 New Connecting Rod Identification Used On Engines {1218}

1993/10/11 New O-ring Seal Used On Cylinder Block Covers {1200}

1993/10/11 New 9U7360 Piston Ring Groove Gauge Group Available {0763,1214,1215}

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

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

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

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

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 Heavy-Duty Seal Kit Availble For Servicing Brake Calipers{4256,4250}

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

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

1993/10/25 New Clips With Grommets Used On Large Water Lines Prevents Wear{1380}

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}