1981/02/23 Caterpillar

New Governor Spring Available For Specific Engine Applications{1264,1265}

Usage:

3208 Truck Engines ( 40S, 32Y)

Description of Change: In the U.S.A., a new EPA (Environmental Protection Agency) regulation (rule) is in effect for noise emissions on refuse compaction trucks. The Federal Register, October 1, 1979, (44 FR 56524-56546) shows the EPA noise emission standards for refuse compaction trucks during the compaction cycle as follows:

To keep the maximum noise levels at or below these standards, most operators who use these trucks will use settings of 1000-1200 RPM for the compaction cycle.

A new governor spring is available for 3208 Engines used in refuse compaction trucks. The new spring permits a load of up to 37.285 kW (50 HP) on the engine with no more than 100 RPM change from 1200 RPM. With this spring, the operator can add a governor control system which will give the necessary degree of engine control for the new regulation standard. Adjustment of the high idle rpm must not be changed from the original specifications.

Adaptable To: The new 1W4793 Governor Spring (High Idle) is directly adaptable to 3208 Truck Engines 40S1-up and 32Y1-up. A Special Instruction, Form SMHS7837 is sent with each spring for parts service. The new spring is available only as a parts service item, and will not be installed at the factory.

Caterpillar Information System:

1981/02/16 Different O-Ring Seal Now Used On The Oil Pump Suction Tube{1307,1304}

1981/02/16 New O-Ring Seal Used In EGR (Exhaust Gas Recirculation) Control Has Better Resistance To Heat Damage{1080}

1981/02/16 New Publication: Engine Bearings And Crankshafts{0374}

1981/02/02 New Camshaft Has Improved Profile (Shape) Of Exhaust Cam To Extend Service Life{1210}

1981/02/02 Elbow With Orifice Now Used In Regulator And Housing Groups For Cooling Systems{1355,1361}

1981/02/02 Aluminum Identification Plate No Longer Used On Torque Converters; Identification Numbers Put Directly On Converter Housing{3101}

1981/02/02 Corrected "5.4" 60°V Main Bearing Selection Guide" Is Now Available{0374,1203,1202}

1981/02/02 New, One-Piece Valve Lifter Used{1209}

1981/02/02 New Exhaust Manifold Has Slip-Joint Connections{1059,1061}

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 6V2009 Adapter Group Available To Test Scroll Fuel System On Fuel Injection Test Bench; Additional Parts Are Needed{0652}

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 Do Not Adjust The Fuel Setting Or High Idle Higher Than Necessary{1257}

1981/02/23 6V4163 Bit And 6V4164 Driver Now Available For Removal Of Bolts For Flyweight Carrier{0612,1264}

1981/02/23 Pipe Plug Added To Rear Of Cylinder Block Prevents Oil Leakage Into Flywheel Housing{1201}

1981/02/23 Changes Made To Power Cord Plugs On 5P6532 And 5P6533 Reader Projectors{0160}

1981/03/02 Changes Have Been Made To Some Caterpillar Service Publications{0375}

1981/03/02 High Concentration Of Aluminum In Oil Analysis Can Be The Result Of Rocker Arm Support Wear{1318,1102}

1981/03/02 Two New Exhaust Manifolds Available For Replacement Of Single Rear Manifold To Prevent Broken Studs{1059}

1981/03/02 Modification Of Flywheel Prevents Loose Clutch Pilot Bearing{1155,1156}

1981/03/02 Check Oil Level Carefully To Prevent Operation With Too Much Oil In Engine Crankcase{1316}

1981/03/09 Correct Preparation Is Important To Prevent Damage During Extended Periods Of Storage{7500}