1979/12/24 Caterpillar

New Linkage Kits With Improved Parts Are Available For Repair Of Front Power Takeoff Clutches{3055,3059}

Usage:

3408 And 3412 Marine Engines Equipped With A Front Power Takeoff Clutch

Description of Change: New linkage kits with improved parts are available for repair of Twin Disc front power takeoff clutches used on 3408 and 3412 Marine Engines. The new kits have linkage that is held together with rivets and shoulder bolts. Formerly, pins and cotter pins were used in the linkage. Also, the clutch engagement levers in the new kits are made of a stronger material than formerly.

Adaptable To: The new 5N6453 Clutch Kit is adaptable to single-plate and the 5N6454 Clutch Kit is adaptable to double-plate Twin Disc front power takeoff clutches used on 3408 and 3412 Marine Engines. The front and rear pressure plates are not a part of these kits. They must be ordered separately.

Caterpillar Information System:

1979/12/24 Too Much Clearance For Exhaust Valves Can Cause Wear To The Camshaft Lobes And Valve Lifters{1105,1210,1209}

1979/12/24 Track-Excited Vibration{4121}

1979/12/24 Crankcase Capacity Increased; New Dimensions For Marks On Oil Level Gauge{1318,1302}

1979/12/17 General Information -- Diesel Fuels In Cold Temperature Operation{1280}

1979/12/17 Fuel Sulfur-Your Diesel's Silent Enemy{0375,1280}

1979/12/10 New Cylinder Heads Are More Rigid And Stronger{1100}

1979/12/10 Improvements Made To Fuel Injection Pump And Governor Group{1253,1281}

1979/12/10 Improved 6V2012 Micrometer Depth Gauge Set Has Increased Range To Permit Deeper Measurement{0653,5070}

1979/11/26 Fabricated Tester For Regulator-Exciter Control Assemblies Used On SR-4 And SRCR Generators{0652,4451,4452,4454,4467}

1979/11/26 Former Oil Pump Group Is Now Used Again{1304}

1979/11/26 New Cylinder Block Has More Material Around Liner Seat Area{1201}

1979/11/26 Batteries Can Be Damaged If Too Much Vacuum Is Used During Electrolyte Fill{1401}

1989/01/09 Indexes For Special Instruction Microfiche Libraries{0374}

1989/01/09 New Special Instruction Available - "Storage Procedure For Caterpillar Products"{1000,7000}

1989/01/16 Improved Rod Seal Combinations Used In Hydraulic Cylinders{4303,5100,5200,5300,5450,5550}

1989/01/16 High Performance Maintenance Free Battery Available{1401}

1989/01/23 Be Sure Battery Charger Connections Are Correct{1406}

1989/01/23 New Crankshaft Seal Adapter O-Ring Seal Is Made Of Higher Temperature Material{1160,1161}

1989/01/23 New Procedures To Adjust Woodward EGB29P Governor/Actuator Linkage{1265}

1989/01/30 Do Not Weld Rods To Eyes, Straighten Rods, Or Build Up Rods With Weld On Any Steering Cylinders, Scraper Bowl Lift Cylinders, Or Truck Suspension Cylinders{4303,5303,7201}

1989/01/30 New Head Gasket Available; Head Gasket Replacement Guidelines{1124,1216,1221}

1989/02/13 New Publication Available-"Coolant And Your Engine"{1395,0374,0375}

1989/02/13 Cold Start Procedures For 3406 (PEEC) Truck Engines{1705}

1989/02/13 New Nut In Fresh And Raw Water Pumps Has More Corrosion Resistance{1371}