(3)
ne
unit seal mu,t
b.
replaced
as
a
whol.
ifwa!er
leakage from it
has been complained by the
use
r.
Referring
to
the
se
ctional \
'ie
w of the unit
~al
,
examine
fl
oating seat (carbon)
(I)
and seal r
ing
(ce
rami
c) (2) part
ic
ularly caref
ull
y
fo
r
we:u
.
If
the
wea
r
is
found exc
essive
, replace
th
e unit se
al
.
Unit:
mill
(in.)
Item
Standard
Wear
limit
Fr
ee
·s
tate height 2 1.8 ± I
of unit
se
aJ
(0.858 ± 0.04)
Flo.ting seat
he
ight
I.S
(0.059) 0
(4) Che
ck
the
fi
t
of
pu
mp shaft
in
the bea
rin
g inner
r
ac
e for lightness,
If
the fit is loose or
if
the mating
f
ac
es are badly damaged, replace shaft Or bearing
or
bo
th.
Unit
: min (in.I
Item
Standard
O.
GO
lT-O.
O
ln
Fit of pump shaft
in
(G.OOOO4T
- O.a0067T)(front)
bearing. .inner race
a .
DOIT
-0.017T
(O.OOOO4T
- 0.OO067T)(rear)
(5) Inspe
ct
the bore provided in the water pump case
for receivi
ng
the bearing. outer races
lo
See
if the
bore
is
damaged;
if
so, replace the cast
or
the
whole pump assembly.
Be
sur<
that the bore
admits the bearing races with a tight fit.
U
nit
: mm
(i
nJ
Item
Standard
I
0.0
II
L - 0.02 5T ([ront) I
Fit
or
bearirlg outer
(O.O
OO4
L -
O.OOIOT)
races
in
pump case
0.0
IlL
- O.025T · (rear)
bare
(0.
OOO4L
- 0.00 lOT)
(6) Inspec' 'he threaded
portion
of the impeller for
danuge.
Thermostat inspection
Test the remo·
...
ed thermos.tat to see
if
jt
starts opening
at 7
6's
°C ±
2'C(16
9.7
°F
± 3.6°F) of rising ,emperature
and
be
c
omes
f
uUy
open .,90·e! 2°
C(194°F
± 3.6°F).
If the difference between th
ese
temperature le
vels
is too
large,
re
place the thennostat.
The tes
1.
is
carried out by imm
erS
ing the rhennostat in
water contained in
an
appropriately sized
pan
and by
heating the water with such
as
an
electric stm'e_ Check
the rising temperature with a thermometer.
MA
tNTENANCE
AND
ADJUSTM ENT
Inspection
o[
fan belt and fan
(1) Inspec' the belt for s
ign
s of deterioration such
as
c;r
acks, and check it for permanent stretch.
An
excessiv
el
y stretched or cracked be
lt
m
us
t
be
replac
ed
.
(2) lnspec! the
fan
blade, for distortion and crack'
and
repl
ac.e
the
fan
as
necessary.
Ele
ctrica
l equipm
ent
Starter senrices
(I)
Inspection before disassemb
ly
(a) Checking the starting cir
cu
it for operation
Wit
h the starler
Ln
pla
ce, check to
be
sure
th
at
-
1.
Th
e battery is in good condition, with its
cell
pl
ates.
s
hOwing
.no
ev
id
ence of "sulhtioo" or
any
other faulty condition,
an
d is
in
fuUy
cha
rg
ed state.
2.
The battery terminal
con
nections
are
dean
and
tight.
3.
TIle starter tcnninal connections
ace
tight,
4. The wires a
re
se
curely connected to terminals.
and
arc:
fre
e
of
any
in
sulaUon stripping
due'
fraying
t
thefe being
no
si
g.ns
of
grounding or
breakiI,g.
S.
The s.tarter switch cl
oses
and opens the circuit
positively at each pos.ition.
Do
not
jump
into a conclusion
that
the
starter
is
in
trouble when the engine refuses to
fire
up
upon cranking:
th
e engine could
be
in
lrouble.
(b) No·load te
,t
If
the starter
is
suspected
of
trouble. take
it
down from the engine
:md
run
a no-load lest
on it to fmd out
if
it is really in trouble.
W11en
removing (he starter,
be
sUre
to
have
the
battery switch ,umed ofr.
Switeh
W
(AJ----,
v
No-load test
ci
rcuit
-9
Battt!t'y I
I
-e
Here's
how
to
c
ar
ry
ou
t the no-load test : Form
3.
lest circuit with
iI
voltmeter and
an
ammeter,
as
'hown
, using a fully
ch
ar
ged
24-volt
ba
ttery ;
close the s.witch to run the starter
un
til i
ts
79
To Next Page
Loading...
Need help?
General
