Onan MDKBH Series, Service Manual

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6-9
Assembly / Disassembly
Stator: Remove the front and top access doors for
access (Page 5-1). To remove the stator, discon-
nect the 2 actuator leads and remove the cover and
4 stator screws. Pry out the leg of the return spring
with a screwdriver. (Be prepared to catch the spring
if it flies off.) Lift off the bearing carrier and stator.
WARNING
The spring can fly off and cause se-
vere eye injury. Wear safety glasses.
Stator reassembly is the reverse of disassembly.
The bearing carrier must seat squarely in the stator.
Torque the stator screws to 24 lb-in (2.7 N-m).
Replace the return spring if it is worn. This spring re-
turns the fuel rack to the no-fuel position. Push the
spring on over the flat on the shaft and pry the leg
into its slot. The leg below the knee must catch un-
derneath and the spring must be pushed down as
far as it will go.
CAUTION
The genset may not stop reliably if
the fuel rack return spring is not assembled
properly.
Use wire ties to secure the cover.
Rotor: The rotor can be pried off the shaft after the
bearing carrier has been removed.
Use a new retainer ring when reassembling. Note
that the ring is concave (dished). Push the dished
side up against the rotor to keep it in place on the
shaft.
Base: See engine Workshop Manual 981-0533 if it
is necessary to remove the actuator base or replace
internal engine governor parts. The stator must be
removed for access to the screws that secure the
base to the engine.
Note: To preserve the existing high-idle speed
adjustment (Page 6-10), do not disturb the lock wires
on the adjusting screws on the governor actuator
base when removing it from the engine for engine
service.
Adjusting Speed Control Lever Stop
The actuator speed control lever stop (Figure 6-7)
must be adjusted whenever a different actuator
base assembly is installed. The stop screw, rather
than the fuel rack control lever, must stop the speed
control linkage when the fuel rack is driven to the no-
fuel position.
Note: To adjust the stop, the rotor need not be on the
shaft, but the end of the shaft must be supported by
the bearing carrier.
1. Remove the front and top access doors
(Page 5-1) and loosen the front / left side panel
assembly so that it can be swung to the left for
access to the adjusting screw.
2. Loosen the stop screw locknut and back the
screw out a few turns. (Top one in the group of
three.)
3. Turn the stop screw in until it just makes contact
and set the locknut.
ACTUATOR SPEED
CONTROL LEVER
STOP SCREW
FIGURE 6-7. SPEED CONTROL LEVER STOP
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