New Rocker Arm Adjustment Screw Used To Adjust Valve Clearance{1123,1100}
Usage:
3406 (92U),
3406B (7FB, 8TC, 4MG, 5YG, 3ZJ),
3406C (5KJ, 4CK),
3408/3408B (28V) Truck Engines
Description of Change: A new rocker arm adjustment screw is use in the valve rocker arm groups. The new adjustment screw has an improved manufacturing and inspection process. The new adjustment screw can be identified by flat top in the area of the screw driver slot, while the former adjustment screw had a rounded top in the area of the screw driver slot.
Adaptable To: The new 108-5603 Rocker Arm Adjustment Screw is a direct replacement for the former 1A-2935 Rocker Arm Adjustment Screw.
Caterpillar Information System:
1994/06/24 New Intake And Exhaust Valves Used{1105,1100}
1994/05/31 New Oil Cooler And Filter Base Assembly And New Oil Cooler And Filter Base Group Have Stronger Mounting Flanges {1378,1306}
1994/05/31 Date Code On 7000 Series Fuel Injection Nozzles; New Seals Used In 7000 Series Fuel Injection Nozzles {1254}
1994/04/22 Service Tools For Electronic Controls{0781,0782}
1994/04/22 Final Control Group (Personality Module) Update{1902}
1994/04/22 Fuel Injection Pump Improvements{1251}
1994/04/22 Identification Of Intake And Exhaust Valves That May Be Used In Remanufactured Direct Injected 3400 Cylinder Heads{1105}
1994/04/22 New Air Compressor Drive Gear Used In Accessory Drive Group{1207}
1994/04/22 New Power Steering Pump Drive Gear Used In Accessory Drive Group{1207}
1994/03/01 The Ninth Edition Of The Lubricating Oils Data Book Is Available From The Engine Manufactures Association (EMA) {1318}
1994/03/01 Electromagnetic Fan Clutch Available{1359}
1994/03/01 Improved Ceramic Turbocharger Group Used{1052}
1994/06/24 New Valve Lifter Assembly Provide Improved Lubrication Of Lifter Roller And Camshaft Lobes{1209,1210}
1994/06/24 Procedure For Lapping Sealing Surfaces Of Fuel Injection Pump Barrels And Bonnets{1251}
1994/06/24 Installation Procedure For 1R-0716 Engine Oil Filter{1318}
1994/07/01 Be Sure To Use The Correct Reverse Flow Check Valve{1251}
1994/07/01 Fuel Injection Nozzle Spray Orifice Plugging{1254}
1994/08/30 Changes To 3116 Truck Engine For 1994{0374}
1994/08/30 Use Of 4C-4377 Stress Plate Group In 3116 Cylinder Block Reconditioning{0672,0673,1201}
1994/08/30 Service Procedure For 40 Pin Connector Seal{1901}
1994/08/30 December 1993 FLASH File Update And Fan Control Logic{1902}
1994/08/30 New 310A Jake Brake® Available{1119}
1994/08/30 New Oil Pressure Regulating Valve Used In Oil Filter Group{1315}
1994/08/30 False Logging Of Diagnostic Codes 100-01 (FC46) "Low Oil Pressure" And 100-11 (FC46) "Very Low Oil Pressure"{1902}