ENGINE
Besides the daily
or
routine services required
on the engine, repair and replacement services
have to be carried
out
at times depending on the
internal conditions
of
the engine.
For
the latter
class
of
services, the whole engine
may
have to
be dismounted from the tractor
or
some
of
its
components may have to be dismantled and
taken down with the engine remaining in place.
In either case,
it
is
essential that
the
work be
performed in a clean place, with a clean floor
and a surrounding space large enough to handle
the engine
or
its components freely.
Use
of
the prescribed tools (special tools) in
addition to the common tools is
another
essen-
tial requirement. The standard practices for
engine servicing include the following:
(a) Have a hoisting
or
lifting means ready for
use. Some
of
engine components are
too
heavy to handle with bare hands.
(b) The exterior surfaces
of
any part
or
com-
ponent must be cleaned before its removal.
(c) Have a full assortment
of
hand tools
(including special tools) ready for use.
Make sure they are clean.
(d) There should be an adequate number
of
trays and pans for holding disassembled
parts in an orderly manner, plus plenty
of
washing fluid and wiping cloths. A supply
of
clean compressed air
is
desirable.
A repair
or
replacement service
is
usually
occasioned by an operating difficulty
or
failure
of
one
or
more components
of
the engine.
If
the
service involves removal
of
one
or
more
of
the
below-named engine parts,
it
is
not
necessary to
take down the engine from the tractor; the
service can be carried
out
with the engine in
place.
(1) Cylinder head. (This includes the valve
mechanism.)
(2) Pistons.
(3) Fuel-injection
pump
or
oil pump.
2·10
(4) Water pump.
(5) Gear case cover, timing gears
or
related
parts.
ENGINE REMOVAL
In the event
of
the flywheel
or
clutch needing
a repair service, the engine must be taken down,
complete with the radiator, front axle and
chassis, by detaching
it
from the clutch housing.
The method
of
separating the engine from the
clutch housing is detailed in the section for
CLUTCH.
The engine removal procedure for replacing
crankshaft
or
cylinder block
is
as
follows:
(I)
Bring the
tractor
to the place
of
work,
letting it stand on the level floor, and drain
the engine oil pan.
Drain plug on
oil
pan
(2) Drain the engine coollng system by opening
the cock cock on the cylinder block.
F
(
(4
(S)
(6)
G
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