New, One-Piece Valve Lifter Used{1209}
Usage:
3208 ( 90N48669-Up, 75V6743-Up, 32Y48035-Up, 79V7760-Up ) Industrial, Marine, Truck And Vehicular Engines;
3204 ( 10X1-Up ) Vehicular Engines
Description of Change: Starting with the above Serial Numbers, new valve lifters of a different design are used in U.S.-built 3208 Industrial, Marine, Truck and Vehicular Engines and 3204 Vehicular Engines.
The new valve lifters are of a one-piece, solid design.
Adaptable To: The new 9N5786 Valve Lifter is a direct replacement for the former 9L9630 Tappet Assembly for all 3200, 3100 and 1100 Series Engines.
Also, the new 9N5786 Valve Lifters can be used together with the former 9L9630 Tappet Assembly in an engine.
Caterpillar Information System:
1981/02/02 New Exhaust Manifold Has Slip-Joint Connections{1059,1061}
1981/02/02 Changes Made To Exhaust Manifold Group And Cylinder Head Group{1059,1101}
1981/02/02 6V3129 Nozzle Puller Group And FT1533 Nozzle Assembly Adapter Can Be Used To Remove Fuel Nozzles{0621,1254}
1981/01/26 Use 2P2333 Manifold Sealer On Exhaust Manifold Slip Joints (Junction) During Assembly{1059}
1981/01/26 Use Scheduled Oil Sampling To Find Change Intervals For Hydraulic Oil{5068}
1981/01/26 Washers Added To Prevent Broken Bolts In Stabilizer Rod Joints (Connections) On Rear Axle Housing{3260,3268}
1981/01/26 6V3150 Engine Pressure Group And 6V3121 Multitach Group Are Available For Testing Engines{0650,1000}
1981/01/26 Improved Tach Drive Adapter Has Step In Shaft To Keep Coupling Engaged{0651,0653}
1981/01/26 Ways To Prevent Damage To Spark Ignited Industrial Engines When Hydrogen Sulfide Is Present In The Fuel{1000,1280,1318,1350}
1981/01/19 Be Sure You Assemble The Turbocharger Lubrication Valve Correctly{1309,1052,1300}
1981/01/19 Green Dye (Color) Added To Transmission Oil For Easier Identification Of Leaks{3004,3067,3179}
1981/01/19 New Sure Seal Electrical Connectors Used In Electrical Wiring Harnesses; Use 6V3000 Seal Repair Kit To Repair Sure Seal Electrical Connectors{0611,1408}
1981/02/02 Corrected "5.4" 60°V Main Bearing Selection Guide" Is Now Available{0374,1203,1202}
1981/02/02 Aluminum Identification Plate No Longer Used On Torque Converters; Identification Numbers Put Directly On Converter Housing{3101}
1981/02/02 Elbow With Orifice Now Used In Regulator And Housing Groups For Cooling Systems{1355,1361}
1981/02/02 New Camshaft Has Improved Profile (Shape) Of Exhaust Cam To Extend Service Life{1210}
1981/02/09 Slip Clutches Now Available On Circle Drive Group{5058,5237,5207,6154}
1981/02/16 New Publication: Engine Bearings And Crankshafts{0374}
1981/02/16 Different O-Ring Seal Now Used On The Oil Pump Suction Tube{1307,1304}
1981/02/23 Conversion Of Earlier Machines To Use Water-Cooled Aftercoolers{1063}
1981/02/23 Later Pistons Have A Smaller Number Of Drain Holes In Oil Ring Groove{1214,1213}
1981/02/23 Two New Oil Filter Assemblies Available; Always Use Correct Oil Filter And Follow Caterpillar Change Intervals{1318}
1981/02/23 New Sequence And Pressure Control Valve Has Reducing Valve With Modulation{3167,1359}
1981/02/23 Increased Force Used For Installation Of Steering Clutch Flange On Final Drive Input Pinion To Prevent Oil Leakage{4057,4091,4052}