09130-01972 GOVERNOR ASSY, MEC Denso Cross

Introduction
The information in this instruction is for the on-fuel injection test bench adjustment of a 3161 Governor for the 3500 Family of Engines.This instruction is NOT written as a troubleshooting guide. This instruction is used in order to check a 3161 governor on a fuel injection test bench. This instruction is also used in order to adjust the governor to the original Woodward specifications.For commercial governors, the original Woodward specifications may not match the specifications for the engine's application.The High Idle, Low Idle and the Pneumatic Speed Control (PSC) must be set to the engine specifications with the governor on the engine for commercial governors. When the engine's specifications are known, the governor's specifications can be calculated. The governor settings can be made while the governor is on the fuel injection test bench.The commercial engines have two engine to governor speed ratios. (Engine speed rpm × ratio = governor speed).
The ratio for both the high speed engines and the mid-speed engines is 0.7619.
The ratio for low speed engines (1200 rpm and lower) is 1.143.
The ratio for the engine on the 994 Wheel Loader is 0.7807.The 3161 Governor Test, NEHS0545 lists only the rpm for the Mid-speed engines and the High speed engines. The governor speed to drive speed ratio is identical for Low speed, High speed, and Mid-speed applications.The specific tools that are required for the adjustment procedure are listed in Table 1.This entire Special Instruction should be read and understood before beginning work on the governor.Reference: Consult the 3161 Governor Test, NEHS0545 and the Tooling To Allow Bench Testing And Adjusting Of The Woodward 3161, NEHG3611 for additional information.Required Tools
Table 1
Required Tools    
Part Number    Description    
4C-8980     Governor Test and Adjust Tool Group    
4C-6907     Governor Test Bench Drive Group    
4C-8740     Air Supply and Test Tool Group    
4C-6100     Torque Control Tool Group    
4C-9054     Battery Charger (110 Volt 60 Hz)    
4C-9055     Battery Charger (230 Volt 50 Hz)    
6V-3075     Dial Indicator    
6V-2057     Contact    
1U-7308     Shim Adjustment Tool    
2A-4781     Bolt    
4B-5269     Washer    Setting Up The Test Bench
Illustration 1 g00370861
Position the 4C-6907 Governor Test Bench Drive Group (1) on the mounting rails. Loosely install the 6V-6103 Clamp Screw Assembly (3) and the 6V-9138 Clamp (4) .
Connect the lube oil's supply line (2). See the Illustration.
Illustration 2 g00370864
Install the 6V-6099 Shield (6) .
Engage the drive shaft with the coupling on the test bench. Tighten the coupling's jaws.
Tighten the 6V-6103 Clamp Screw Assembly (3) .
Install four 3P-0647 O-Ring Seals (5) .Installation Of The Governor
Plug the Fuel Air Ratio Control (FARC), the Pneumatic Speed Control (PSC), and, if equipped, the Pressure Shutdown ports.
Determine the type of oil that is used in the governor. If the governor is not a self-contained governor, the oil will be engine oil from the engine which is being regulated. Self-contained governors