Chevrolet 30 Series 1967 Service Manual page 364

ENGINE—ELECTRICAL 6Y-16
D IS C O N N E C T
FROM
R E G U LA TO R
W IR IN G H A R N ESS
F ig . 16c—Fie ld Resistance Test
5. The generator output should be at least 10 amperes
below the rated generator output for this check.
Example: If generator rated output is 130 amps, the
regulator is limiting voltage if amperage is
or less.
. To adjust voltage setting, remove pipe plug and
6
turn slotted adjusting button inside regulator.
NOTE: After two notches in each direction,
there is a positive stop.
7. For an undercharged battery, raise voltage setting
Service Operations described in the following section
are for the 5.5" Series ID aluminum Delcotron, 6.2"
Series 2D, Type 100 Delcotron and the
Type 150 Delcotron. Where important differences in
testing and/or service
separate mention will be made of the three generators.
GENERATOR
PULLEY REPLACEMENT
Single Groove Pulley
1. Place 15/16" box wrench on retaining nut and in­
sert a 5/16" alien wrench into shaft to hold shaft
while removing nut (fig. 17c).
TO G R O U N D
O N G E N E R A T O R
6 i
P A R T 2
OHM M ETER
OHM M ETER
SERVICE OPERATIONS
. " Series 4D,
6 6
operations are encountered,
F ig . 17c—C irc u it Resistance Test
by turning one notch and then check for an improved
battery condition after a service period of reasonable
1 2 0
length.
. For an overcharged battery, lower voltage setting
8
by turning one notch and then check for an im­
proved battery condition after a service period of
reasonable length.
9. If the regulator cannot be adjusted to a value within
the specified range, replace the regulator.
2. Remove washer and slide pulley from shaft.
3. Reverse Steps 1 and 2 to install, use a torque wrench
with a craw-foot adapter (instead of box wrench)
and torque the nut to 50 ft. lbs. (fig. 18c).
Double Groove Pulley
1. Place a 15/16" socket (with wrench flats on the
drive end or use Adapter J-21501 and a box wrench)
on retaining nut, insert a 5/16" alien wrench through
socket and adapter into hex on shaft to hold the
shaft while removing the nut.
2. Remove washer and slide pulley from shaft.
3. To install, slide pulley and washer on shaft and
start the nut.
4. Use the socket and adapter with a torque wrench
and tighten nut to 50 ft. lbs. torque.
CHEVROLET TRUCK SERVICE MANUAL