John Deere 318 - Manual (Page 347)

4b
Stator Resistance
Test
Key switch OFF. Stator leads
disconnected from
regulator. NOTE: Because of the small amount of
resistance in the stator windings, use a digital
multimeter or an analog meter with a high
sensitivity rating to measure resistance of stator
windings. If an analog meter is to be used, make
sure it is at the lowest scale setting and is
zeroed.
M37209 -UN-25JAN90
Connect ohmmeter to stator leads (A). Compare
reading with specification (listed in chart) of
engine being tested.
NOTE: The “Spec” letter is the last letter of the
engine model number.
“P” SERIES ENGINE RESISTANCE
(P218G and P220G) (ohms)
Spec “A” . . . . . . . . . . . . . . . . . . . . . . . 0.06—0.10
Spec “B” and “C” . . . . . . . . . . . . . . . . . 0.10—0.19
“B” SERIES ENGINE RESISTANCE
(ohms)
B43E . . . . . . . . . . . . . . . . . . . . . . . . . 0.10—0.20
B43G and B48G . . . . . . . . . . . . . . . . . . 0.30—0.50
RESISTANCE NOT
OK: Replace stator.
RESISTANCE OK:
Verify all connections
are good. Clean or
replace connections as
necessary.
Ö
PTO CLUTCH
ADJUSTMENT
CHECK
M36659 -UN-25JAN90
Key switch OFF.
Check armature-to-rotor
clearance using a feeler
gauge.
Insert feeler gauge
through slot (A) in
brake plate.
Clearance should be
0.46 mm (0.018 in.)
NOTE: There are three
slots around the clutch
for checking clearance.
Check clearance at all
slots.
CLEARANCE OK:
Repair or replace clutch
assembly. (See Section
40.)
CLEARANCE NOT OK:
Adjust clearance as
instructed in Section
40.
MX,159024030,16-19-16MAY95
MX,159024030,17-19-16MAY95
Electrical System Component Tests and Adjustments/PTO Clutch Adjustment Check
TM1590 (17MAY95)
240-25-7
316, 318 & 420 Lawn and Garden Tractors
020895
240
25
7