LINK AS 4779855 - Caterpillar

Table 1
Required Tools    
Part Number    Part Description    Qty    
1U-7431     Adjusting Tool     1    The following procedures are used in order to functionally check a Type VI governor. The housing cover plug and the seal for the throttle stop do not need to be removed. This check is intended as an aid to determine if a governor is functioning correctly. Use the following steps to check the governor.Note: The Type VI governor is similar to the Type V governor. An additional assembly has been added to the Type VI governor in order to create the Dual Horsepower feature.
Install the governor on the calibration bench. Refer to the Testing and Adjusting, "Installation Of Governor On 1U7326 Governor Calibration Bench" section in this manual.Note: Do not install an oil supply to the Dual Horsepower mechanism. The oil supply is not needed to check the governor.
To check the High Horsepower, proceed with the checking procedure for the Type V governor. Refer to the Testing and Adjusting, "Governor (Types I, II, IV, And V) - Check" section in this manual.
To check the Low Horsepower setting, proceed with Step 4.
Illustration 1 g00660040
(1) 1U-7431 Adjusting Tool
Remove the threaded plug from the dual horsepower adjustment port.
Install 1U-7431 Adjusting Tool (1) into the dual horsepower adjustment port. This will actuate the Low Horsepower setting.Note: Thread Tool (1) into the housing until the Tool bottoms out. This will ensure that the Low Horsepower feature is fully engaged.
Adjust the calibration bench to the "LOAD STOP ADJ" rpm that is specified in the TMI. Slowly move the throttle to the "LOW IDLE ADJ" position and back to the "THROT STOP ADJ" position. Do not move the throttle again during this checking procedure.
Check the governor output dimension. The governor output dimension should be within the "DUAL POWER STOP ADJ" dimension.Note: The governor is operating correctly and the governor can be used again without any adjustment if the performance of the governor is acceptable according to the tolerance checks.Note: If the governor fails any of the above tests, follow the procedures toward the end of the checking procedure in the Testing and Adjusting, "Governor (Type V) - Adjust".Note: If the governor fails only the Low Horsepower test, follow the procedures in the Testing and Adjusting, "Governor (Type VI) - Adjust" section of this manual.