1990/03/05 Caterpillar

New Piston Pin Retainer Used In 3600 Family Of Engines{1214}

Usage:

Description of Change: A new retainer is used to secure the pin which holds the piston assembly to the rod assembly (see Illustration 1). The design of the new retainer provides for easier assembly and disassembly. The former retainer could restrict rotation of the piston pin in some applications.

Adaptable To: The new 7C1413 Pin Retainer is a direct replacement for the former 7C1848 Piston Pin Retainer which has been canceled. This change is adaptable to all earlier engines.

NOTE: The retainer is designed with one side having a rounded edge (1) with a convex face (3), and the other side having a sharp edge (4) with a concave face (5) (see the chart and Illustration 2). The side with the rounded edge and convex face is stamped or etched with the word "OUT". The CORRECT installation procedure is to install the ring with the sharp edge and concave face toward the piston pin. This will keep the pin from binding. After installation is completed, the piston pin should be rotated by hand to ensure that it is free to turn in the piston.

Illustration 1. Location of the piston pin retainer (A) and the word "OUT" (B).

Illustration 2. Front and side view of retainer.

Caterpillar Information System:

1990/03/05 New Basic Turbocharger Groups And Cartridge Groups With Improved Compressor Seals, Thrust Bearings, And Hollow Shaft For Reduced Heat Soak{1053,1077}

1990/03/05 New Plug Used In Front Housing For Fuel Injection Control Group{1151,1298}

1990/03/05 2N4620 Rubber Drive Block Reinstated For Parts Service{3305}

1990/03/05 Preventive Maintenance (PM) Kits Available For 3116 Truck Engines{7258,0645,1261,1318,1352,7542}

1990/03/05 New Fuel Inlet Fitting Eliminates Breakage; New Screen Used In Inlet Fitting{1250,1252,1261}

1990/03/05 Changing Mounting Position Of 9F3099 And 302266 Magnetic Switches (Relays) May Extend Service Life{1426}

1990/03/05 Do Not Use Lubricant On Sticking Start (Ignition) Switches{1416}

1990/03/05 4C5623 Smoke Candles Can Help Locate Air Leaks in Cab{7301,7325}

1990/02/26 New Inlet/Exhaust Valve With Improved Valve Seat Angle, New Valve Guide, New Cylinder Head Assemblies With New Inlet Valve Seats {1100,1103,1104,1105}

1990/02/26 Welded Crankshafts {1202}

1990/02/26 Improved Head Gasket Used; Service Tips {1124,1216,1221,7568}

1990/02/26 New Water Temperature Regulator Used {1355,1353}

1990/03/12 New Loupe (Magnifier) Available For Inspecting Failed Or Broken Parts{0777}

1990/03/12 New Hand-Held Microfiche Reader Available{0354,0374}

1990/03/12 New Rear Gear Group Has Spur Gears Instead Of Helical Gears For Longer Service Life{1204,1206,1212}

1990/03/12 Shorter Bolt Used To Hold Oil Pan Drain Cover{1302}

1990/03/12 Idle Shutdown Timer Used In Auxiliary Power Applications{1705,1706,4267}

1990/03/12 9W2126 Module (Relay Module){7490}

1990/03/19 New Air Conditioner Thermostatic Switches Used {7337}

1990/03/19 Possible Overvoltage Conditions From Output Of VR3 Voltage Regulator {4467,4474}

1990/03/26 New Oil Control Piston Ring Used In 3300 Family Of Engines {1213,1214,1215}

1990/03/26 New Personality Modules Require New Service Program Modules {1902}

1990/03/26 Caterpillar Announces 460 hp 3406B (5YG) Heavy-Duty Diesel Truck Engine {1000}

1990/04/02 Correct Replacement Of Forward Warning Horns{7402}