Westerbeke 20B TWO Tehnical Manual page 65

Torque Spring Set Installation
Install and adjust the torque spring set using the follow-
ing procedure:
1. Set the speed control lever to the high idling speed
position by adjusting the high speed set bolt.
2. Turn in the torque spring set until engine speed drops
about 50 rpm from high idling speed.
3. From this position, turn back the torque spring set
by the specified number of turns (N). Lock the
torque spring set at that position with the special nut.
4. Install the torque spring set sealing cap and stake
the cap to prevent loosening.
~
20B Two & 30B Three
Number of loosening
turns (N)
2.2
Torque Spring Set Assembly
When the torque spring set has been disassembled or
its component parts have been replaced, reassemble
and adjust the torque spring set using the following
procedure:
1. Assemble the torque spring set as shown in the
figure. Using the adjusting screw (5), adjust the
projection (8) of the torque spring stopper (1) from
the spring case (2) to get the specified projection.
2. To measure the projection (8), keep the torque
spring set in vertical position as illustrated. Put the
dial gauge probe against the spring stopper (1) at
the center
of
its end face using a small dial gauge
(having the sensitive probe which does not com-
press the torque spring when pushed against the
spring stopper end).
63
Torque spring set
Turn in this torque spring
set until engine speed
drops about 50rpm from
high-idling speed.
Sealing cap
(Stake after setting)
Torque spring set
Adjust to specified
number of loosening
turns -N"
Number of loosening
2. Spring 1. Spring
. tr
identification
mark
Assembling torque spring set
A : Height of spring stopper
Measuring spring stopper projection
(0)
Projection
6. Torque spring
B : Height of case
Westerbeke Engines