ELECTRONICS GP-MONITOR 2418722 - Caterpillar

Adjusting the Governor Actuator Linkage
Table 1
Tools Needed     Quantity    
4C-6594 Timing and Fuel Setting Tool     1    
6V-3075 Dial Indicator     1    
5P-4814 Collet Clamp     1    
5P-7263 Indicator Contact Point     1    The governor actuator linkage must be adjusted in order to synchronize the actuator travel with the travel of the engine fuel control linkage.Note: Before the adjustment of the actuator linkage is made, the fuel injectors must be correctly synchronized. Refer to System Operation, Testing and Adjusting, "Fuel Injector Synchronization".
Illustration 1 g01346033
Governor actuator linkage (1) Synchronizing pin (2) Governor actuator (3) Governor terminal shaft (4) Governor control housing (5) Shaft (6) Rod (7) Lever (A) Location for Synchronizing pin (B) Location for dial indicator (C) Angle of installation
Remove the two plugs from location (A) and from location (B) on governor control housing (4) .
Remove synchronizing pin (1) from the storage location in the governor control housing. Install the synchronizing pin in the governor control housing at location (A) without the spacer.Tighten the synchronizing pin to the following torque. ... 10 2 N m (7 1 lb ft)
Rotate shaft (5) in the "Fuel On" direction until the flat surface of the fuel stop lever contacts synchronizing pin (1). Hold the shaft in position. Dead weights are recommended.
For the 4C-6594 Timing and Fuel Setting Tool, install the 5P-4814 Collet Clamp in the threaded hole at location (B). Slide the 6V-3075 Dial Indicator with the 5P-7263 Indicator Contact Point into the 5P-4814 Collet Clamp. When the contact point seats against the fuel stop lever, slide the indicator inward or slide the indicator outward until the indicator dial reads +5.00 mm (+0.197 inch). Tighten the collet in order to hold the indicator in position. The indicator is now ready to be used.
Remove synchronizing pin (1) from the governor control housing and install the pin into the storage location. Install the plug in the threaded hole at location (A) .
Remove rod assembly (6) .
Rotate governor terminal shaft (3) to the minimum fuel position. Then hold the governor terminal shaft in place.
Install lever (7) on shaft (3) so the centerline of the lever is 40.7 degrees from the vertical centerline. This is shown by angle (C) .
Adjust rod assembly (4) between the control housing lever and the actuator lever (3). Use the appropriate procedure that follows.
If the 4C-6594 Timing and Fuel Setting Tool is being used, adjust the rod assembly until the 6V-3075 Dial Indicator displays a reading of −4.50 mm (−0.177 inch). Secure the rod assembly in place with the locknuts. Ensure that each rod end on the rod assembly has the same amount of thread engagement.
Personal injury or death can result from flying objects generated by engine overspeed. The engine could overspeed as a result of improper linkage assembly, adjustment, or governor deadband. Be prepared to stop the engine by activating the engine air shut-off or closing the air off to the air inlets.
The definition of governor deadband is the total amount of