1981/03/06 Caterpillar

New Governor Spring Available For Specific Engine Applications


3208 Truck Engines (40S32Y)

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:

1981/03/06 New O-ring Seal Used In Egr (exhaust Gas Recirculation) Control Has Better Resistance To Heat Damage
1981/03/06 Check Oil Level Carefully To Prevent Operation With Too Much Oil In Engine Crankcase
1981/03/06 Two New Exhaust Manifolds Available For Replacement Of Single Rear Manifold To Prevent Broken Studs
1981/03/06 Do Not Adjust The Fuel Setting Or High Idle Higher Than Necessary
1981/03/06 Modification Of Flywheel Prevents Loose Clutch Pilot Bearing
1981/03/06 Later Pistons Have A Smaller Number Of Drain Holes In Oil Ring Groove
1981/03/06 New Turbocharger, Turbocharger Oil Lines Group And Aftercooler Air Lines Group Used
1981/03/06 High Concentration Of Aluminum In Oil Analysis Can Be The Result Of Rocker Arm Support Wear
1981/03/06 List Of Service Publications
1981/03/06 Changes Have Been Made To Caterpillar Service Literature
1981/02/04 New, One-piece Valve Lifter Used
1981/02/04 Inspection And Test Procedures To Follow When Fuel Ratio Control Does Not Operate Correctly
1981/04/09 Low Engine Temperatures: Install Check Valve
1981/04/09 6V4163 Bit And 6V4164 Driver Now Available For Removal Of Bolts For Flyweight Carrier
1981/04/09 Correction To Torque Specification For Locknuts On Valve Clearance Adjustment Screws Of Engines Equipped With Jacobs Engine Brakes
1981/04/09 Special Studs And Nuts Available For Exhaust Manifolds On Engines Used In Heavy Load Conditions
1981/04/09 Two New Oil Filter Assemblies Available; Always Use Correct Oil Filter And Follow Caterpillar Change Intervals
1981/04/09 Cooling System Cleaner Removes Rust And Corrosion
1981/04/09 Correct Refill Capacity For Engine Oil
1981/04/09 6V3197 Spacer, 6V3041 Tool Group Available For Use During Removal And Installation Of Piston Pin Bearings
1981/04/09 Clean Electrical Contacts In Exhaust Gas Recirculation (e.g.r.) Switch Group And Cover Assembly Before Installation
1981/04/09 Electrical Information For Egr (exhaust Gas Recirculation) Systems On 3208 Truck Engines So Equipped
1981/04/09 Improve Use Of Engine Service Manual Microfiche
1981/04/09 List Of Service Publications
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