Chevrolet BEAUVILLE SPORTVAN G10 SERIES, Руководство по обслуживанию

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ENG INE E LE C TR IC A L 6Y-15
Field Relay Checks and Adjustment
To check for a faulty relay proceed as follow s:
1. C onnect a v oltm eter in to th e system at the regulator No.
2 term inal to ground (Fig. 7c).
2. O perate th e engine a t fast idle (1 5 0 0 to 2000 rp m ) and
observe voltm eter reading.
3. If v oltm eter show s zero voltage at regulator, check circuit
b etw een No. 2 term inal on regulator to “ R ” term inal on
D elcotron.
4. I f voltage at regulator exceeds closing voltage specifica­
tio n and light rem ains oh, regulator field relay is faulty
(R efer to specifications). Check and adjust regulator as
follow s:
Closing Voltage Adjustment
1. Make connections as show n in Figure 9c using a 50 ohm
variable resistor.
N O T E : This gives us a variable resistance in series
fro m a hot lead to the relay coil.
2. T u rn resistor to “ o p e n ” position.
3. T u rn ignition sw itch off.
4. Slowly decrease resistance and n o te closing voltage o f the
relay. A djust b y bending heel iron in the m anner illus­
tra te d in Figure 9c.
Fig. 9 c —Adjusting Field Relay Closing Voltage
Other Harness Checks
O ther wires in th e charging system harness need be checked
for co n tin u ity by use o f an oh m m eter or a te s t light (12 V olt).
C onnect th e te st lam p so th e wire in question is in series in the
test circuit.
COMPONENT PART REPLACEMENT
G ENERATO R PULLEY REPLACEMENT
Single Groove Pulley
1. Place 1 5 /1 6 ” bo x w rench on retaining n u t and insert
5 /1 6 ” alien w rench in to shaft to h o ld shaft while re­
m oving n u t (Fig. 10c).
2. Rem ove w asher and slide pulley fan and spacer from
shaft.
3. Reverse Steps 1 and 2 to install, use a to rq u e w rench
w ith a craw -foot ad ap ter (instead o f b o x w rench) and
to rq u e th e n u t to 50 ft. lbs. (Fig. 11c).
1 5 / 1 6 " SOCKET
Fig. 10c—Pulley Removal Fig. 11c—Torquing Pulley N u t
C H E V Y V A N S H O P M A N U A L