B
ENGINE
Fig. 819. Protecting
the
can. rods
RE.ASSEMBL
Y
P,osltlon
the
crankshaft with
the
centre
piston
at
bottom
dead centre. Support
outer
pistons
at
blocks
of
wood placed across
the
crankcase
mouth
to
i«:lep
them
vertical and prevent
them
from being
d.amaged on
the
cylinder base studs.
Smear
the
~ores
and pistons lightly with engine oil.
Compress
the
rings on
the
outer
pistons with
the
Use
of
toggle
type
clamps, part No. 61·6052. Retain the
rubber
rings on
the
cam
followers
to
avoid the
possibility of
these
failing Into the crankcase. and
mount
the
cylinder block on the two
outer
pistons,
ensuring
that
the
square
fins
ofthe block
are
at the
front
of
the
engine. Lower
the
cylinder block over
the
pistons, and when
all
six rings have
entered
the
bores, remove both toggle clamps and
the
wood
blocks. While an assistant holds the cylinder block
In
this
position, fit a toggle clamp
over
the
centre
plscon rings. (see
Fig.
B20).
and lower
the
cylinder
block
stili further. until these rings also
are
In
the
block. arid remove
the
clamp. Slide
the
cylinder
block fully home
onto
the crankcase studs, and fit
the
plain washers and special nuts. Tighten down
evenly, working from the centre
nuts
outwards.
Fig. 820. Refitting cylinder- block
SECTION
BI8
INSPECTING
THE
CAM
FOLLOWERS
The
bases
of
the
cam
followers
are
fitted
with
a
"steilite"
tip.
This material
has
good Wear resisting
qualities
but
the
centre ofthe tips may
show
signs
of
slight Indentation.
If
the
width of the Indentations
exceed
ft
In.
then
the
cam follower should be
renewed.
SECTION
819
INSPECTING
THE
TAPPET
GUIDE
BLOCKS
The
guide blocks
are
pressed Into
the
cylinder
block. and
are
retained
by
pressed
In
aluminium
alloy pegs.
No
attempt
should be made
by
the
private
owner
to
remove
the
guide blocks.
Wear
In
the
guide block
can
be estimated by
rocking
Bll
a
tappet
whilst It
Is
In
position. It should be a
sliding fit with little sideways movement (see
GENERAL DATA for
correct
clearance).
If
the
guide blocks are
In
need of renewal,
the
cylinder block must be returned
to
a Triumph
dealer.
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