Robin America RGV4100 Service Manual page 57

(3) Check the insulation resistance between sta-
tor core and each stator lead using a Dr. Robin
generator tester in megger tester mode or a
megger tester. (Fig. 11-3)
If insulation is bad, replace stator with a new
one.
11-1-3 CHECKING ROTOR
(1) Remove rear cover and stator.
(2) Using a Dr. Robin or a circuit tester, measure
the resistance of the field coil at the terminals.
M O D E L
R E S S I T A N C E
NOTE : Because a diode is soldered to the coil
ends at the terminals, resistance may be mea-
sured only when tester probes touch the termi-
nals in one combination of polarity. Therefore, if
no resistance reading appears, try checking in
reverse polarity.
[Remedy]
If the resistance is not normal, replace rotor with
a new one.
R G V 2 8 0 0 R G V 4 1 0
Ω Ω
1 7 . 5 1 7 . 7
Table. 11-2
( Ω )
0 R G V 6 1 0 0
Ω
1 6 . 0
- 54 -
Fig. 11-3
Fig. 11-4
Fig. 11-5