1993 NISSAN SERENA Service Repair Manual

STARTING
SYSTEM
Wiring Diagram
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EL-18

STARTING
SYSTEM
Trouble-shooting
lf any abnormality is
found, immediately disconnect battery negative
terminal.
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EL-l9

STARTING
SYSTEM -
Starter -
Construction (Mitsubishi
make)
M1T6681 (SR2oDE
engine)
O Rear
cover
O Metal
rear
cover
O Brush
spring
O Brush
@ Brush
holder
@ Field
coil
O Armature O
Pack
@ Magnetic
switch
@ Shitt
lever
@ Gear
case
@ Stopper
prnion
@ Pinion
shalt @
Gear
'rt Hrnron
@ Bearing
@ Housing
(} Starter motor
assembly
(t Gear case metal
EL-20

STARTING
SYSTEM -
Stader-
9q)0.3.31 424 (LlI2Oll
engine)
wk
w$ FF.-,
@ /K:b@;-" I@----.*
Construction
(Cont'd)
(BOSCH
make)
O Armature
assembly
@ Dust
cap
O Bearing
O Gear
cass
O Bushing
O Pinion
ass€mbty
@ wheel
crown
O Plate @
Armature
lrame
@ Solenoid
@ shitt
tever
O Pinion
shatt
@ Brush @
Rear
cover
@ Field
coil
@ Brush
spring
O Brush
spring guide
EL.21

STARTING
SYSTEM _
StArtEr _
Bemoval and Installation
SR2ODE ENGINE
GA16DE ENGINE
LD2OII ENGINE
p
N
m
1rs-m. h.ru1y
(
Dismantling (SR20DE,
GA1 6DE)
REMOVING THE MAGNETIC SWITCH
o Disconnect
the feed
wire irom
the solenoid terminal
af .
. Remove
the screws
if , securing
the switch to the end hous-
ing O
o Lift
the front
end of the
solenoid to
disengage the plunger
from the engagemenl lever. Remove the solenoid.
BEMOVING THE REAR COVER
o Take
out the through bolts.
o Remove
the screws
@, securing
the rear
cover
Q and
the
bruchplate i!
, respecitvely.
o Remove
the rear plate
taking care lhat the
brushplate does
not move f rom its place.
EL-22

STARTING
SYSTEM _
Starter _
Dismantling (SR20DE,
GA1 6DE) (Cont'd)
REMOVE THE BRUSH PLATE
o By
means of a pliers,
move the end
@ of
the brush springs
Irom the rear lo the left side of the brush. This
is
to release
the brushes from pressure.
Repeat the same operation for
the rest
of brushes.
o Take
out the brush plate
assembly.
REMOVING THE FIELD COIL AND THE ARMATURE
o Withdraw
both the field
coil and the armature at the same
time.
(SMODE engine)
Take care not
to lose
the ball located
inside
the planeting
assembly. This ball is
for
bearing the armature end.
Dismantling gear
case
SR20DE engine
EL-23

STARTING
SYSTEM _
Starter _
Magnetic Switch
Check
Before starting to check, disconnecl battery ground
cable.
Disconnect "M"
terminal of starter motor.
Continuitv test.
Pinion/Clutch Check
1. Inspect pinion
teeth.
o Replace pinion
if teeth are worn or damaged. (Also
check
condition of ring gear
teeth.)
2. Check to see if pinion
locks in one
direction and rotates
smoothly in
the opposite
direction.
o lf
it
locks or rotales in
both directions,
or unusual
resistance
is evident. ... Reolace.
REDUCTION GEAR TYPE
3. Inspect
reduction gear
teeth.
o Replace
reduction gear
it teeth are worn or damaged. (Also
check condition
of armalure shaft gear
teeth.)
Continuily
between Continurty
Action
"S" lerminal and switch
DOOy Yes
o.K.
No Replace
"S" terminal and "l\,t"
terminal Yes
o.K.
No Replace
EL.24

STARTING
SYSTEM _
Starter _
Srush spring Brush
Check
BRUSH
Check wear of brush.
Wear limit
length:
Refer to S.D.S.
o Excessive
wear...
Replace.
BRUSH SPRING PRESSURE
Check brush
spring pressure
with brush spring
detached from
brush.
Spring pressure
(with
new brush):
Refer to S.D.S.
o Not
within
the specified
values... Replace.
BRUSH HOLDER
1 . Perform
insulation test
between brush holder (positive
side)
and its base (negative
side).
Continuity exists. ... Replace.
Check brush to see if il moves
smoothlv.
lf brush holder is
bent. replace
it: if
sliding surface is dirty.
ctean.
ilv between brush holder
and....
Negative brush
rsolat
Positive brush
Armature Check
1 .
Continuity test (between
two segments side by side).
o No
continuiw...
Reolace.
2.
EL-25