1994/09/05 Caterpillar

New Radiator Shroud and Support Bracket Improve Service Life{7272,1351}

Usage:

CS-431B (1XF),
CP-433B (1MG),
CS-433B (4FK) Vibratory Compactors

Description of Change: A new radiator shroud and support bracket reduce the possibility of cracking the radiator shroud. The new shroud has an additional plate welded on top for increased strength. The new support bracket is a two-piece design to allow for differences in alignment between the engine and fan shroud. A new shroud mounting tube is also used with the two-piece support bracket.

Adaptable To: The part numbers and effective PINs of the new fan shroud, support components and tube are listed in the chart. The locations of the new parts are shown in Illustration 1.

Illustration 1. Location of New Components

All parts are adaptable to first production for each model listed. It is recommended to replace the shroud, mounting bracket, and tube together to minimize the possibility of cracking the radiator shroud.

When installing the new two-piece mount, adjust the vertical position of bracket (3) to achieve a spacing of 8.0 ± 1.5 mm (.32 ± .06 in) between the bottom of the bracket and the top surface of the radiator shroud. See Illustration 2.

Illustration 2. Adjustment of Bracket. See chart for identification. (A) 8.0 ± 1.5 mm (.32 ± .06 in).

Caterpillar Information System:

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1994/08/29 New Exhaust Manifolds, Longer Mounting Studs And Spacers Used In Exhaust Manifold Groups {1059}

1994/08/29 Oil Drain Assembly Improved To Reduce Thread Interference With Drain Plug {1302}

1994/08/29 Cylinder Head Bolt Tightening Procedure {1100}

1994/08/29 Description And Usage Of The Electronic Programmable Transmission Control II (EPTC II) {3168}

1994/08/29 Improved Automatic Retarder Control (ARC) {3121}

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1994/08/29 Main Power Relay May Not Work Properly {1423}

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

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

1994/09/05 Improved Engine Door Hinge Used{7263}

1994/09/05 Air Cleaner Filter Screens Require Maintenance{1051}

1994/09/05 New Plunger In Fuel Pressure Regulating Valve{1250}

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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}

1994/09/12 Procedure To Bleed And Charge The Rear Suspension {7213}

1994/09/12 New Spring On Fan Belt Tightener Provides Longer Service Life {1358}

1994/09/12 New Fuel Priming Pump Assembly Used In Fuel Priming Pump Group {1258}

1994/09/12 New Seals In Pump Fastener Group And Fuel Injection Pump Group Have Improved Heat Set Resistance {1251}

1994/09/12 Improved Fuel Pump Bonnet Seal Has Better Heat Resistance {1251}