Inspecting The Distributor And Its Components - Westerbeke 7.0 KW BGC -60Hz Technical Manual

Inspecting the Distributor and its Components
1. Inspect the rotor and cap for cracks, wear, rust, dirt or salt deposits.
2. Check the cap with an electronic tester, as il-
lustrated in the diagram to the right.
Prior to testing the distributor cap, apply your
breath inside the cap to dampen the interior of
the cap. Set the range of the ohm tester to
INSULATION M Ohm. If the cap's resistance is
less that 20M ohm, clean the cap using a neutral
detergent. After drying the cap, remeasure the
insulation resistance. If the insulation resistance
is still less than 20M ohm, replace the cap.
3. Check the distributor shaft for wear or damage.
Replace all damaged parts.
•
~
,..
o -
Q.
8:
o "
~U)
00
(V)OO
~
'~r
r - l
1
_~J
Insulation M
n
,
) ' ::' 1 2 ..... ""
!
00 CJ t:J CJ
0 0
, ,
,
1--
j:
®
000
' f !lOO.
00
,
I
~
I
,
::do
I
I
,
I
, I
' I
=--
---":::::.:.==:: -
-..!-
----@-----:
Measuring POints
<D
Between center electrode and segments
No.1 through No.3
0Between each segment of No.1 through
No.3
4. Measure the condenser capacity with a circuit tester. If the reading does not fall within the specified range,
replace the condenser.
Specified range:
(Condenser Capacity)
5. Test each spark plug wire and the coil wire.
Connect the leads of a circuit tester to each end
of the spark plug wire. Check the continuity of
the spark plug wire while gently waving the center
portion of the spark plug wire. If the pointer on
the tester deflects while the wires are waved, then
the wires are satisfactory.
Specified resistance:
Westerbeke Generators
0.25 microfarads (uF)
10 - 22 ohm/m
94