ENGINE
Measuring cam height on injection-pump camshaft
Tappets
(1)
A
tappet
whose
bottom
face
is
flaked,
grooved
or
cracked
must
be replaced.
(2) Check each
tappet
for radial clearance by
miking its
OD
and hole ID. Be sure to
replace the
tappet
if
the
clearance
is
found
to exceed the limit.
Engine tappets
Pushrods
(1)
A pushrod which
is
excessively worn
at
either
end
must be replaced.
(2) Check each pushrod for straightness by
rolling
it
on a surface plate.
If
it
is bowed
or otherwise distorted, straighten
it
in the
usual manner
or
replace it.
Speedometer driven
unit
Inspect this unit for wear and damage at its
gear and shaft.
Be
sure, at the time
of
installing
this unit,
that
the
"0"
ring
is
in good condition.
2-22
REASSMBLY
Cylinder head
To
reassemble, use reverse
of
disassembly
procedure. Observe the following rules:
(
I)
Install valve guides, making sure
that
each
guide protrudes
out
of
the
top
of
the head
to
the specified height. (The
method
of
installing them is explained in
"Inspection,"
above.)
(2)
Fit
the valve stem seal to each valve guide,
making the seal settle snugly on the guide
end.
(3) Oil valve stems, and insert them
into
the
guides.
Put
on valve springs, retainers and
locks, in
that
order.
(4) Build up the rocker mechanism by proceed-
ing
as
follows: Hold the front stay with its
mounting bolt hole coming on the right-
hand (nozzle) side. Insert the rocker shaft
into the stay so that the identifying mark
(3-mm
or
O.l-in. dia. hole) on the end
of
the shaft faces the right-front side
(theJn
pump). Mount the
outer
front rocker an
and secure
it
in place by fitting snap ring;
mount
the inner front rocker, thus com-
pleting the reassembly
of
the first group.
Reassemble the second and third groups
similarly, ending with the fitting
of
the rear-
most snap ring; set the whole mechanism
on the cylinder head; and secure
it
to
the
head by bolting.
Be
sure
to
use seat washers
on the bolts for front and rear stays.
..
Front Identifying mark
Rocker arms and shaft
(5) Run
the
glow plugs
into
the
head, and
tighten them
to
the prescribed torque
f
(
(10
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