New 3161 Marine Governor Provides Better Low Idle Stability
Usage:
3508 (96Y, 69Z),
3512 (50Y, 66Z),
3516 (29Z, 72Z) Marine Engines
Description of Change: A new 5% fixed droop governor group is used in place of adjustable droop governors. The new governor provides improved stability at low idle rpm and significantly reduces engine rpm "undershoot and overshoot." It also includes components for controlling governor stability when the engine throttle is reduced for maneuvering purposes or emergency reversal purposes.
Adaptable To: The new field replacement 7E4537 Governor Group replaces the former field replacement 9Y2652 Governor Group. The new governor is adaptable to all 3500 Low Speed and High Speed Engines.
Effective serial numbers for the new governor are:
- 3508 HS: 96Y1010
- 3508 LS: 69Z505
- 3512 HS: 50Y854
- 3512 LS: 66Z360
- 3516 HS: 29Z913
- 3516 LS: 72Z392
- 3508 LS: 69Z505
Caterpillar Information System:
1989/11/01 New Water Level Gauge Group For Folded Core Radiators
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1989/11/01 New Shaft Assembly And Lever Assembly Used In Air Shut-Off Group
1989/11/01 New Spacer Used In Attachment Alternator Belt Guard Group
1989/11/01 New Crankshaft Counterweight Bolt And Washer Used
1989/11/01 Exhaust Manifold Gasket Removed From Between Exhaust Sleeve And Manifold Section.
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1989/11/01 New MG507 And MG507A Marine Gear Groups; New Marine Transmission Mounting Group
1989/11/01 New Connecting Rod and Main Bearing Kits Available
1989/11/01 Two Remote Instrument Panels Available: Conventional and EMCP
1989/11/01 Hand Tool List For 3114 And 3116 Engines
1989/11/01 Use Correct Calibration Pin (1U9786) When Calibrating Governor; Do Not Use 1U7305 Insertion Tool
1989/11/01 New Gasket With Stainless Steel Flange Used In Exhaust Manifold Group
1989/11/01 Cylinder Liner Changes
1989/11/01 New Nut For Lifting Eye Bracket
1989/12/01 4C4213 Insulation Tester for Electrical Power Generation
1989/12/01 New Camshaft And Lifter Kits Available For Slipper Type Cam Followers (Valve Lifters)
1989/12/01 Additional Information For Checking Valve Camshaft Timing
1989/12/01 Modification Of 2W1054 Screen Assembly For Use During Dynamometer Testing
1989/12/01 New Flanges Used And Gaskets Added To Water Cooled Turbocharger Exhaust Connections
1989/12/01 Spark Plug Gasket Available
1989/12/01 New Spark Plug Used In Ignition Groups
1989/12/01 Cooling System Drain Valves Available
1989/12/01 Improved Turbocharger Wash Water Lines Group Available On Engines Powered By Residual (Heavy) Fuel