Drive Belts - Yanmar 1GM User Manual
One, two & three cylinder engines
Hide thumbs
Also See for 1GM:
- Operation manual (56 pages) ,
- Shop manual (241 pages) ,
- Shop manual (241 pages)
Table of Contents
Advertisement
COOLING SYSTEM
Seawater
pump
DRIVE BELT ROUTING
Engine
circulation
pump
Alternator
<,
Alternator
169
SEAWATER
COOLING
SYSTEM
6.
Refi
ll the
cooling system
.
Start the
engine
and check
for
leaks.
Recheck
the
clamps for tightness after operating
the engine for a few hours.
DRI
VE BELTS
Inspect
all
drive
belts at regular intervals to
make sure
they are in good cond
ition
and are properly
tensioned. Re-
place
worn,
frayed, cracked or glazed belts immedia
tely.
The components to which they direct power are essent
ial
to the
safe
and reliable operation
of
the boat. If co
rrect
ad-
justment
is mainta
ined
on each
belt,
all will usually
give
the same service life. For
this
reason
,
and because
of
the
cost involved in replacing an
inner
belt
(requ
iring
the
re-
moval
of
the outer
belt),
it is a good idea to
replace all
belts as a set. The adde
d
expense is
small compared
to the
cost of
replacing
the belts ind ividually and eliminates the
possibili
ty
of a breakdown on the
water,
which
could cost
far more in time and
money.
Drive belts
should
be properly tensioned at all times
.
If
loose, the belts will
not
permit
the driven components to
operate at maximum effic
iency.
The
belts
will
also wear
rapidly because of the
increased
friction cause
d
by slip-
page. Belts that are too tight
will
be overstressed
and
prone to premature failure. An excessively tight belt
will
Seawater pump
CLOSED
COOLING
SYSTEM
also
overstress
the bearings, resulting in premature fail-
ure
.
Only install
heavy-duty
belts
.
Do not install
light-duty
belts, such
as
those
designed for automobile
use.
Refer to
Figure 16
for drive belt routing
diagrams.
Belt Adjustment
Refer
to Chapter
Three for belt adjustment
procedures.
Belt Replacement
Alternator drive belt replacem
ent
Rep lace
the a
lternator
drive
belt
as
follows:
I.
Loosen
the alternator bracket and
pivot
bolts (F
igure
17,
typical).
2. Move the
alternator
toward the
engine
and slip the
belt
off the crankshaft
and alternator
pulleys,
and
if equipped
with
freshwater coo
ling,
the circu
lating
water pump pul-
ley.
3.
Install a new
belt over
the
pulleys.
4.
Move the altern
ator
away from the engine and adjust
the
belt
tension
as
described
in
Chapter Three .
8
Hide quick links:
Advertisement
Table of Contents
