PLATE 4834287 - Caterpillar

Table 1
Required Tools    
Part Number     Part Name     QTY    
128-8822 (1)     Fuel System and Governor Tool Gp     1    
( 1 ) This Tool Group replaces the former 1U-6680 Fuel System and Governor Tool Gp .This is an on engine test that is used to determine if the Fuel Ratio Control (FRC) is set properly. If the FRC is set properly, no additional procedures will be required. If the FRC is set incorrectly, the governor must be removed and the governor must be adjusted. The governor is adjusted according to the procedures that are covered in Service Manual, SENR6454, " 3114, 3116, and 3126 Engine Governors".To determine the Fuel Ratio Control setting, complete the following steps:
Install the 128-8822 Fuel System and Governor Tool Gp. Refer to Systems Operation Testing and Adjusting, "Unit Injector - Adjust" for the instructions on the installation of the 128-8822 Fuel System and Governor Tool Gp .Note: A digital indicator is recommended for the following test procedures.
Illustration 1 g00700472
Typical Governor (1) Fuel Ratio Control (FRC) (2) Port (boost line) (3) Low idle screw (4) High idle screw
Disconnect the boost line from port (2) for the boost line. Apply air to the port, once the boost line is disconnected.Note: A regulated air supply of 140 to 210 kPa (20 to 30 psi) MUST be used in order to avoid damage to the FRC.
While the engine is operating at low idle, quickly actuate the throttle to the high idle position.
Record the maximum reading that is observed on the digital indicator as the engine's speed increases to high idle. This