Governor System - Westerbeke 12C-TWO Operator's Manual

GOVERNOR SYSTEM
INSPECTING THE GOVERNOR COMPONENTS
Check levers for
smooth movement.
Check springs
for fatigue.
Check sliding sleeve
for wear. damage, and
smooth movement.
Check sliding sleeve
joint for wear and
damage.
Check weight
for wear
and damage.
Disassembly and Inspection
With the gear case removed, disassemble the governor sys-
tem. When removing the gear case,
be
sure to remove the tie-
rod cover by the side of the fuel pump and disconnect the
tie-rod from the rack. Replace all parts that warrant replace-
ment.
Governor Removal
To remove the levers, pull out the grooved pins which have
been driven into the governor lever and speed control lever.
Loosen the bolts that fasten the levers and shafts.
NOTE: When inspecting a malfunctioning governor also
check the bearing on the gear case side.
Inspect and the reassemble the levers and shafts, checking
them for proper operation.
After
press-fitting each grooved pin, check the shaft for
smooth operation and rotation. Coat the o-rings with oil
before installing them. Deflection must not exceed 0.787in
(20mm) with the governor spring installed.
Install the governor spring lever and the speed control lever
so that the play angle between the levers (5°) is minimized.
24
INSTAWNG THE SPEED CONTROL LEVER
TORQUE SPRING SET ASSEMBLY
When the torque spring set has been disassembled and
inspected and defective parts replaced, reassemble and adjust
the torque spring set using the following procedure:
Approx
I--;
0. 7 ~~if_
/SPRING CASE
I
~
(2/
/PRING STOPPER
ADJUSTING SCREW
SPECIAL NUT
NOTE:
The illustration shows the early version of the Torque
Spring Set. The current version is a solid unit.
Assemble the Torque Spring Set
Use the adjusting screw to set the projection of the torque
spring stopper from the spring case to ·get the specified pro-
jection.
To measure the projection keep the torque spring set in the
vertical position as illustrated.
I
MEASURING SPRING STOPPER PROJECTION
Then put the dial gauge probe against the spring stopper at
the center of its end face using a dial gauge with a sensitive
probe which does not compress the torque spring when
pushed against the spring stopper end.