DISTRIBUTOR
(Cont'd)
Disassembly
And
Assembly
Use
the following procedure to disassemble and
assemble the distributor [A):
Remove the rotor (Item
3)
[A). Remove the snap ring from
the spindle of the breaker base (Item
7)
[A).
Remove the screws holding the vacuum advance
(Item
21) [A] and removal. Disconnect the wires and remove
the termina
l.
Remove the breaker points. Remove the cam assembly.
Remove the springs (Item 10)
[A]
and weights (Item 9)
[A).
Remove the roll pin (Item 19)
[A]
from the gear (Item 20)
[A). Remove the gear and shaft assembly.
Checking
Centrifugal
Advance
Run
the engine at the idle low RPM. Remove the vacuum
hose. Slowly increase the engine
RPM to check advance.
1 . Excessive Advance
Weak Springs or broken.
2.
Insufficient Advance
Faulty operation of the centrifugal weights
or
cam.
Checking Vacuum
Advance
S.et
engin~
speed at
280~
RPM. Check advance by
disconnecting and connecting the vacuum hose. Timing
should advance
10
°.
For an accurate check, connect a
vacuum pump and
run
engine at idle RPM. Slowly apply
vacuum to check advance.
1 . Excessive Advance
Weak vacuum control spring or broken.
2.
Insufficient Advance
Breaker plate binding
or
diaphragm broken.
Added Sept. 90
A
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
-70-6-
5
",'
1
341'~
~
I
f~w~~\,.
· ·
'
,
I
l.)rQ'
I 7
'j).
6
12
11
I
8
I,
910~
I
10~.,
I
~
I
13
-:.
\0
<17
Cap 12.
Carbon
Contact
13.
Rotor
14.
Wire
15.
Arm
Support
16.
Wire
17.
Breaker
Base
18.
Cam
19.
Weight
20.
22
I
~~
Washer
Oil
Seal
Terminal
Packing
Housing
O-ring
Washer
Roll
Pin
Gear
Spring
21.
Vacuum
Control
Shaft
22.
Condenser
8-09824
741,742,743,
743DS
Bobcat
Loader
Service Manual
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