MAINTENANCE OF GENERATOR ASSEMBLY
AND FRAME ASSEMBLY
Section I. GENERATOR ASSEMBLY
8-1. General (Model MEP-018A)
General. The generator is attached to the engine
by a coupling on the rotor shaft which
connects to the drive hub mounted
Disconnection of the coupling from
the drive hub permits removal of the
generator as a unit.
se the setscrew for securing the coupling. This setscrew is
used to prevent end play of the key only.
sembling the split flange coupling to generator rotor shaft,
back off the setscrew to clear the key,
secure the flange by tightening the machine
stance measurements, together with their tolerances
contained herein, should be used only as a
general guide. Take into consideration the
accuracy of the instrument used, test lead
resistance, and ambient temperature at the
instrument such as a Kelvin or Wheatstone
between the suspected component and a
like item that is known to be good.
Disconnect the plug connector from
the rear of the control box.
Use a multimeter set on RX 1 scale
and test between pins 3 and 6, 8 and
12, 7 and 10, 1 and 4, 2 and 5, 11
and 13, and 9 and 14. If continuity is
not indicated in all tests the stator is
defective and should be removed for
further testing or replacement.
Removal. To remove the generator and engine as
an assembly, refer to paragraph 6-2.
proceed with step 1,.
Remove battery. Refer to paragraph
Remove control cabinet assembly,
refer to paragraph 6-1.
Remove 4 nuts and lockwashers and
remove upper frame from skid.
Remove ventilating screen and unit
Remove lower support bracket and
Remove two remaining bolts that
secure generator housing to the
Remove two drive coupling bolts.
Remove two generator mounting
Attach a lifting device to the generator
lifting eyes located inside the tool box
and remove generator from engine.
Remove two bolts and nuts holding
drive coupling assembly together and
separate the two coupling halves.
Remove the setscrew (1, Figure 8-1)
from the drive coupling assembly
support, loosen alien bolt on drive
coupling assembly support, and slip
support (2) off the rotor shaft (33).
Remove the coupling and shaft
machine key (6).
Loosen and remove the nut (3) and
the key washer (4) securing the fan
to the generator housing and rotor
assembly and remove the fan (5).
Change 8 8-1