ARMY TM 9-6115-639-13
AIR FORCE TO 35C2-3-386-51
MARINE CORPS TM 10155A-13/1
4-54. GOVERNOR ACTUATOR MAINTENANCE - cont.
11. Check the no load to rated load operation by opening and closing the CIRCUIT INTERRUPTER switch
and observing the actuator magnet and plate (19, Figure 4-51). If the actuator magnet makes contact with
the plate during the on/off load operation, reduce gain slightly by rotating GAIN pot (2, Figure 4-50)
clockwise.
NOTE
When applying rated load the engine speed should increase without a large initial drop in engine
speed. When removing load the engine speed should decrease without a large initial surge in
speed.
12. At no load, lift actuator lever (4, Figure 4-51) and lock it in the manual start position. The PMA
frequency shall be 317 Hz (3800 RPM) or the voltage shall be 219 +/-2 volts AC.
13. Shutdown generator set and disconnect multimeter. Close and lock control panel.
B. REMOVAL.
1.
Unlock main access cover latches and lift cover to open.
2.
Disconnect electrical plug (1, Figure 4-51) from governor actuator (2).
3.
Disconnect ball joint (3) on engine linkage from lever (4) on governor actuator by removing screw (5),
washer (6), and locknut (7).
4.
Remove governor actuator (2) by removing two screws (8), lockwashers (9), and washers (10).
C. DISASSEMBLY.
1.
Remove lever (17, Figure 4-51) from lever (4) by removing screw (11), washer (12), and nut (13).
2.
Release lever (4) from governor actuator (2) by loosening screw (14), washer (15), and nut (16).
3.
Remove screw (18), plate (19), washer (20), and nut (21) from lever (17).
4. Remove ball joint (3) from linkage rod (22). Remove nuts (23, 26, 27) and spherical washer (24). Remove
link bracket (25) from engine only if replacement is required.
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Change 1
