Pistons, Rings And Gudgeon Pins And Cylinder Liners; The Cylinder Liner; Piston Dimensions For Xc5 And Later Engines - PEUGEOT 404 Owners Workshop Manual

top.
A
rubber
joint
provides tightness between the
liner
and
the cylinder block. The installed
liners must protrude
above
the top
surface
of
the cylinder block
by.015
to
.075mm. If
the measurement
is
less
than this the rubber
seals at
the
base
of
the liners must be
reneured.
The
liners are
identified
at the factory by one,
two,
three or
four
notches on
the lower rim. These indicate the
liner
diameter range
and
correspond
to
the Íour
sizes
oÍ piston also
available.
When installing liners
ensure
that these grading
marks are
fitted
to
face the
camshaÍt
side
of
the engine.
The cylinder
liners and
the
grading
marks referred
to above can
be
seen
in FIG
1
:20
and the
Íour
sets
of
dimensions are
given in the table following:
Liner ref. mark
1
11
111
1111
Liner
bore mm
84.000
to
84.01
1
84.012
to
84.022
84.023
to
84.033
84.034
to 84.044
FIG
1:20
The
cylinder liner
from the
caps.
Then completely
remove
the bolts
and
detach
the big-end
caps. Push
the prstons out of
the
cylinder
bores
and withdraw the
assemblies.
lt
may
be necessary
to
careÍully
scrape
the
carbon formation
away
from the top
of
the cylinder
bore
to
facilitate
removal. Ensure
that the
connecting
rod
bearing
shells
and
caps are
kept
in
theiÍ
corÍect sets
after
removal.
1 :1
1
Pistons, rings
and
gudgeon pins and
cylinder
liners
The cylinder liners
are
detachable
wet type
liners made
oÍ
centrifugal
cast iron. They are
positioned
in
the
engine
by
a boÍe
in
the cylinder block
at
the
bottom
and by
a
shoulder
in the
cylinder head
gasket
joint
face
at
the
Pistons:
The
low
expansion aluminium
alloy pistons have
an
elliptical skirt
with wide carving
at
the
bottom. The piston
skirts are
not split. DiÍÍerent pistons
are used
on the later
XC5 engines
which
raise
the
BHP
of the engine'from72
to
76. The diÍÍerences
in the
measurements
can
be seen
in
FIG
1
:21
.
Each
piston
is
fitted
with two
compression and one oil
scraper
ring,
the
top
compression
ring
being
chrome
plated.
The reÍerencing oí
the pistons
is made by means
of one
letteÍ,
A,
B, C
or
D
which
correspond
to the
reÍerence
marks
1,
2,3
or
4
on the
cylinder liners,
and
this
is
stamped
on
top of the pistons. Also stamped on the top
of the piston
is
the mark
'AV'
with
an arrow.
When fitting
pistons
this arrow must point towards the
front oÍ
the
eng ine.
Earlier instcllotion
(Also
used on 3-moin beoring engines)
Loter instollotion
(76 &
9ó hp engines)
404 .
5.04ó.809
404
J -
4.529.913
404
C
404
L
XC
5
ENGINE
4.497.999
4.85r.595
Compression
rotio :
7.6/
1
and later
engines
404
404
J
-
5.04ó.810
-
4.529.914
4.498.001
4.851.59ó
404
C
404
L
P404
A
--(-1-+-
V
Comoression
rotio :
7
.4/
1
FtG
1
:21
Piston dimensions
for
XC5
17