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Hints for
f.cilitating disassembly-reassembly
work
Engine disassembly
(al Orderliness is important.
Have
work
benohes
ond
parts
trays
in
good
c
ondition
~
clean
and
tidy
.
Washing sinks
and
pans sh
ould
be neat and
ready
for
us.. Have
the dis,,",sembled
parts
placed
in
respective trays,
keepmg
a
group
of associalcd
parts in the same tray ror easy
id
entification.
(b) Before separating
two
parts,
be
sure to make
match
marks
a~
necessary. Even
for iliost
parts to
whicn
positional
matching
is.
not
criticai, such
marks will
facilitate
reassembly
work.
(e)
Signs
of some defects
or
naws are
visible
during
dis3ssembly but JIlay
disappear when
the
disassem-
bled
parts
are washed clean
.
Leave your fIndings
on
record
when such signs are noted
.
(d)
Use
the
right
kind of
tool
for each disassembling
job. in order
to
protect the parts and to speed
up
'he work
.
(e)
Handle
bearU'g8 and
busrung'
and the
like
with
care.
They
are
critical
par
ts:
a
little nick cou ld
ma ke them
unfit [or
re-use.
Engine re ....
mbly
(a)
Make
it a rule not
to
rc·use
ditty
parts. in
reassem·
bly.
Oil seals and
beari1lgs
must
be
particul"ly
cle.n
.
!lefore
instolling them
,
be sure to cle .. ,
the
bores for admit
ting
them,
(b)
It
is
a good
practice
not to re·use those gaskets
and sealing members removed from the engine
that has been in
long
service. Use
o
f replacement
partS is more economical
as
far as gaskets and the
like are
concem~d.
(e)
!lefore
fitting
a
running part,
be sure to oil
its
stiding surf.c
...
Use
clean,
fresh
'ngine
oil.
(d)
Hav. the speCified sealing
compoWld
on
han
Use of the compound is prescribed for most of
sealing pa
rts.
(e)
Torque
limits
are
specified
for some bolts
and
nuts
.
Be
sure
to use
torque
'
w renches
and to
re rer
to the
specified
values
of torque
limits.
Engine
dismounting and mounting
The engine and
transmissi
on a.re
lo be
L
aken down
tog.thor from the
machi.ne.
The two mus
t
be
combined
On
the
bench
and then remounted as a
unit.
The dis-
mounting and
mounting
p rocedures are set forth
in
another manuaJ.
DtSASSEMBLY AND REASSEMB LY
Rocker
arms and rocker shaft
Rocker shaft .... mbly
removal
(1)
Remove
rocker
cove
r
and gasko
t.
Remove
oil
pipe
eye
bolt
(I)
and disconnecr pipe
(2).
(2) Loosen
short bolt (3)
fi
rSt and long bolt
(4)
next
on
each
bracket
and. after freeing
all
four
brackets,
~ft
the
rocker shaft
.surnbly
(5)
off the
cylinder
head.
--
~
- -
1·Sy. bolt
2·0il
p ipe
3-5110rt bol
t
4·Lor.g boh
5
·F\ocke.r
s.hah e,:semblv
(3) Draw out push rods (6), and remove valve ceps (7).
6-Pu
sk
rod
7·V
alve
t:zIp
Rocker shafl assembly iru5ta1I.tion
(1) Insert
push
ro
ds
into
respective
tappet
holes.
Mount
valve
caps
on the heads
of
respective "alves.
Position the
rocker
shaft assembly on
the
cylin.
der
head and make
the
short
bolts
and long bolts
ing.rlight
.
(2)
Tighten
the
8 shorl and
long
bolts to • torque
value
between
1.5
and 2
kg.m
(l0 .8 and
14.5
rt -lb).
Give
Ihe
final
torquing t
o
long boh
s
fi rst and to
short
bolt,
next,
malting
sure
that
all
bolts ar'
tightened
equ,Uy.
89
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