1993 NISSAN SERENA Service Repair Manual

STARTING
SYSTEM _
StaTteT _
Vnniar ctlipar Armature
Check (Cont'd)
2. Insulatron test (between
each commutator bar and shafl).
o Continuity
exrsts. ... Replace.
3. Check commutator surface.
o Rough
... Sand lightly with No.500 -
600 sandpaper.
Check diameter ol commutator.
Commutator minimum
diameter:
Refer to S.D.S.
Less than specified value...
Replace.
5. Check depth of insulating mold irom
commutator suriace.
o Less
than 0.2 mm (0.008
in) ...
Undercut to 0.5 to 0.8 mm
(0.020 to 0.031 in)
Undercut
procedures
Round IO.O2O. O.
-->-
^/
r{\\il rr,
\\\
'//// Correc!
Sr F, te
rF:=
E1.26

STARTING
SYSTEM -
Starter -
Assembly
Apply h igh-temperature grease
to lubricate
the bearing, gears
and frictional
surface when
assembling the starter.
Care{ully observe
the following inslructions.
Assembly at next
order:
. Gear
case
Pinion assembly and shift lever,
musl be mounted together.
. Ring
and pinion
shaft.
. (sR20DE)
Put the ball in
its hole.
o Field
coil and armature frame, must
be mounted
together.
Don't lock the holes of screws.
o Armature
f rame.
o Brush
holder.
Check the correct alignment of holes
of screws.
o Rear
cover.
. Magnetic
switch.
Service Data
and Specifications (S.D.S.)
Type M
TSUBISHI BOSCH
t\.rf 1 T6
05 8 I
M002T25481 9000.3
31424
Engine applied SR20DEGA16DE LD20rl
System voltage V 12
No load
Terrnrna voltage Vt1 115
Current A
[ra.x
88 50[,,lore
lhan 150
Bevolubon rpmtulore
than
3 000 5.600Less
than
4,500
Minimum diameter of comrnula-
lor mm (rn) 288
28 8 (1
134) 28.9 (1.138)
Mrnimum lenglh of brush mm (in)
12.0 12 0 (4.472)
7 (0
028)
Brush spring tens on N (kg,
lb) 13.7
25.5
(1.4 26
3.1 -57) 137
(1 .4
3.1 -
2.6 16.5
32.0
(1.7 -
3.3
3.7 -
7 .3)
EL.27

CHARGING
SYSTEM
Wiring Diagram
t
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z
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o
ffi
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EE
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t-t-1
H
t:]-
F;
ll r-.
9t I
[!J0
r.g?
c
c
E
3
c
rr,
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8sF
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EF+
ai_ A
z
.
o
cD
f)
^l
t9E
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tsF
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@# ra$ d@
SoS *@
*- :
|r
At-- -------r
lln 6 -l
il' a 'l
frt6 lEt I
-l -:? J
-=:' !!
9! o
3 6; .9
;;p !F
;'; P F 9
;;::v:l
6 i,
ofo)to6
n -
HHI'::IP:
ooo(,
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urr!
it:
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EL.28

CHARGING
SYSTEM
Troubleshooting
Before conducting an alternator
test, make sure that the
battery is fully charged. A
3o-volt voltmeter
and
suitable test probes
are necessary
for the test. The
alternator can be checked
easily by relerring
to the
Insoection Table.
Betore starting troubleshooting,
inspec,t the fusible link.
WITH IC REGULATOR
l/Vrrh.lt.rn.to. iid. L r.rm;nel
groundad, Intcrnal 3ho7t occuri
whln +
diod. ri
3hoit-crrcurtod. |;;;;-l
I burb
Repl.ce
I
I end
Proceed
I
- -l'."r-"
I
\--6;;"*;l
,/
lRepleco. I
) F"-"r""
"c;:l
E."*;;I
- -lo,
a.c.c I
- F;"d"-l
--F* _-l
-@
D-|;;;d'cnc'l
/
lR6elacs. I
---l;* __l
'SGe
4l lor grounding F
termrnel.
(H ITACH I
1)
2l Ur
lully
dr.n d brtr.ty.
Light :
Cbrgt wrming light
A.C.G. :
Alt.nrator p.rtr
ax6pt lC
lrguhtot
IC.RG :
lC r.!ul
or
O.K. : lC-rhrrtt.tor
it in good
@ndhbn.
Wbn r.aafiing
"O.nrqad A.C.G.", rar|oy!
allarnatc tron
r.lrida
||td ditaaxmbla, intpasr
|rrd corrrct or
aapLc. fasltY prn!.
'Mrthod of ero{Ddirt F
t.rmin.l
{HITACHI mrkc
onlyl Make
suro connodor
(S, L) is
connocted
3)
4) More
than 15.5V
13 ro l5V
EL-29

CHARGING
SYSTEM _
Alternator _
Removal and lnstallation
SR2ODE ENGINE
fq: N
m
{Ko m. tl-lb)
GA16DE ENGINE pl
ro :r t.6-p1
12 i,,i
."-"'-E
Z|o! as. so
(4.6 ,
6.1
33 -
44)
r?)
--'-.! Q re-zr
t1
6 21 1p,i5t
//
t) Nm
rr.tjm a,b)
f) rz
so (38
s r
27 37r EEL0]3
EL-30

CHARGING
SYSTEM _
Alternator _
Removal and Installation (Cont'd)
EL-31

CHARGING
SYSTEM -
Alternator -
Construction
SF2ODE ENGINE _
LR.19O-719
GA16DE ENGINE _
LR-18G735
(n.eu'r6
,"d *>d0
@shM* (v\
".Y\ \.
.' .i,
,9
LII20[ ENGINE -
9120.335.000
@ Rear
cover
O Voltage
regulator
f,Q Brush
.9
Pulley
O stator
O Diode
plate
assy.
EL.32
O
Vacuum
pump
O Rotor
(D Front cover
@ Fan

CHARGING
SYSTEM -
Alternator -
Soldering aron
{200W capacirv, Disassembly
BEAR COVER REMOVAL
CAUTION: Rear cover may be hard to remove because a ring is used to
lock outer race
of rear bearing. To facilitate removal of rear
cover, heat
iust bearing
box section with
a 2oGwatt
soldering
iron.
Do not use a heat gun,
as it can damage diode assembly.
Rotor Slip Ring
Check
1. Continuity test
o No
continuity... Replace rotor.
2. Insulator
test
. Continuity
exists ... Replace rotor.
3. Check slip ring for wear.
Slip ring minimum
outer diameter:
Refer to S.D.S.
Brush Check
'L Check smooth movement
of brush.
. Not
smooth ...
Check brush holder
and clean.
2. Check
brush for
wear.
o Replace
brush if
it
is worn down to the limit line.
3. Check
brush lead
wire for
damage.
o Damaged...
Replace.
4. Check brush spring pressure.
Measure brush spring pressure
with brush projected
approximately 2 mm (0.08
in) from
brush holder.
Spring pressure:
Refer to S.D.S.
o Not
within
the specified values ... Replace.
Ohmmeter
Erush woar limiting
line
2 mm (0.O8
in)
EL.33