ground clearance DATSUN B110 1973 Service Repair Manual

ENGINE

EE022

Fig
EE
18

Ground
test

of
armature

5
Check
the

armature
for
short
circuit

by
placing
it

on

an
armature
tester

placing
a
hack

saw
blade
over
the

armature
core
and

by

rotating
the
armature
If
the
saw

blade
vibrates
armature
is
short
circuited

EE023

Fig
EE
19
4
rmature
test

for
short
circuit

6
Check
the

armature
for

continuity
by

placing
probes

of
a
tester
on

two

segments
side

by
side

If
the
tester

shows
no

conduction
the
circuit
is

open

Over

runnmg
clutch

assembly

Check
the

over

running
clutch
for

operation
and

replace
if
the
clutch
is
defective
due
to

slippage
or

dragging

Inspect
the

pinion
assembly
and
sleeve

Slceve
must

slide

freely
along
the
armature
shaft

spline
I

f

damages
are

found
or
there

is
a
resistance
while

sliding
replace
Inspect
the

pinion
teeth
for
excessive

rubbing
and

replace

as

required
Check
the

flywheel
ring
gear
also
for

damage

and
wear

Testing
brush
holder
for

ground

Place
one
test

probe
of
a
circuit
tester
on
to
the
rear

cover
and
the
other
on

to
the

positive
side
brush

holder
If

the

tester
shows
conduction
the
brush
holdcr
is
shorted

to

ground
Replace
the
insulator
or
brush
holder

od

l

Fig
EE
20

GTound
test

of
bTush
holder

Pinion
case

bearing
metal

Inspect
the

bearing
metal
for

wear
and
sidc

play
If
the

clearance
between
the

bearing
metal
and
the

arma
ture

shaft
is

mOTe
than
0
2

mm
0
0079
in

replace
the
metal

Install
a
new

bearing
and

adjust
the
clearance

to
0
03

to

0
10
mm
0
0012
to
0

0039
in

Install
the

bearing
metal

so

that
the
end
of

the

bearing
metal
is

flush
with

gear
case

end

plane

Magnetic
switch

assembly

Inspect
the

magnetic
switch

contact
surface
If
the

contact

surface
is

rough

replace
Replace
the

pinion

sleeve

spring
if

weakened

When

inspecting
the
series

coil

apply
voltagc
8
to

12V
between
Sand
M

terminals
The
series
coil
is
normal

if

the

plunger
is
attracted

When

inspecting
the

shunt
coil
connect
the

S
terminal

M

terminal
and
switch

body
as
shown

in

Figure
EE
21

With
the

plunger
attracted

open
the

M
terminal
The

EE
S