1994/05/30 Caterpillar

Three And Five Piece Wheel Rims Reduce The Possibility Of The Tire Bead Not Seating Correctly{4209,4202}

Usage:

All Caterpillar Products Equipped With Three Or Five Piece Wheel Rim Assemblies

Reference: Special Instruction, SEHS9067, "Dismounting Tires On Caterpillar Machines With Five Piece Rims".

A lock ring safety enhancement feature is incorporated into Caterpillar machines using three-piece and five-piece rims. The improved design insures that the rim components are correctly installed before the tire can be inflated. This feature is accomplished by adding an extension to the flange on a three-piece rim and to the bead seat band on a five-piece rim as shown in the illustrations.

The new design prevents the bead seat from contacting the rim base O-ring seal if the lock ring is not correctly seated. Lack of contact with the O-ring seal prevents the tire from being inflated. This feature eliminates the potential for the lock ring to be expelled due to improper seating.

The new flanges and bead seat bands are in production on all Caterpillar Products.

Tire tools and adapters for existing tools are available from tool suppliers for disassembly and assembly of the new design. See the reference material for information on service tools for five-piece rims.

Illustration 1. Five Piece Rim Assembly That Is Not Assembled Correctly. (1) Flange. (2) Band. (3) Rim Assembly. (4) O-ring seal. (5) Ring. (A) Gap between band and O-ring Seal.

Illustration 2. Correctly Assembled Five Piece Rim. (1) Flange. (2) Band. (3) Rim Assembly. (4) O-ring seal. (5) Ring.

Illustration 3. Correctly Assembled Three Piece Rim. (1) Flange Assembly. (2) Rim. (3) O-ring seal. (4) Lock Ring.

Caterpillar Information System:

1994/05/23 Date Code On 7000 Series Fuel Injection Nozzles; New Seals Used In 7000 Series Fuel Injection Nozzles{1254}

1994/05/16 Fuel Dilution In The Engine Oil{1290,1318}

1994/04/25 Service Tools For Electronic Controls {0781,0782}

1994/04/25 Lubricant Will Ease Installation Of Secondary Radial Seal Air Filter Element {1054}

1994/04/11 Speed Sensor Available With Improved Reliability{1907}

1994/04/04 Identification Of Intake And Exhaust Valves That May Be Used In Remanufactured Direct Injected 3400 Cylinder Heads{1105}

1994/03/28 Improved 1R-0712 Fuel Filter Provides Improved Sealing{1261}

1994/03/21 The Ninth Edition Of The Lubricating Oils Data Book Is Available From The Engine Manufactures Association (EMA) {1318}

1994/03/21 New Seal Used In Air Lines Group {1058}

1994/03/14 Articles Pertaining To Commercial Engines Or Truck Engines {0374}

1994/02/28 New Turbocharger Models Have Left-Hand Threads On Compressor Nut And Turbine Shaft {1053,1052}

1994/02/28 New Retaining Compound Is Available {0649}

1994/06/20 Installation Procedure For 1R-0716 Engine Oil Filter{1318}

1994/06/27 New Assembly Procedure For Hydraulic Pump Groups With Double Shaft Seals And A Weep Hole Between The Seals Helps Prevent Contamination Through The Weep Hole{5073}

1994/07/04 New Cylinder Head Gasket, Spacer Plate And Head Bolts Used; New Cylinder Liner Projection Measurement Method; New Cylinder Head Torque Sequence; Improved Coolant Flow (Cylinder Heads) {1124,1221,1216,1101}

1994/07/11 Different Fuel Filter Available To Prevent Premature Wear On Fuel Injection Pump Plungers And Barrels{1261,1251}

1994/08/08 SOS Allowable Soot Level Changed{1318}

1994/08/15 Switches With Screw Terminal And Sure Seal® Connector Replaced By Switches With A DT Connector{1400,7400}

1994/08/22 Lubrication Change On Twin Disc Power Take-Off's (PTO's){3055}

1994/08/22 New Fuel Priming Pump And Improved Gasket Used{1258}

1994/09/05 Fan V-Belt Part Number Has Changed For Certain Models With The 3204 Engine{1357}

1994/09/05 Use Of 4C-4377 Stress Plate Group In 3114 And 3116 Cylinder Block Reconditioning{0672,0673,1201}

1994/09/05 Remanufactured 3400 Cylinder Heads Now Use Intake And Exhaust Valves With Chrome Plated Valve Stems{1105}

1994/09/05 New Water Seals Used In Cylinder Head Assemblies{1124}