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Kawasaki KZ1300-A1 Quick Reference Manual Page 209

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MAINTENANCE--ENGINE
the cooling system. If this accumulation is not removed,
it will clog
up
the water passages and considerably reduce
the efficiency of the cooling system
.
-Drain the cooling system
.
-
Fill the cooling system with fresh water mixed with a
flushing compound
.
~
:~~~~ i:~a~~u~ft: ~~:~~~ln:O::~~i~:
and radiator. Carefully follow the instructions supplied
by the manufacturer of the cleaning
product.
-
Warm up the
engine,
and run it at normal operating
temperature for about ten minutes.
-
Stop the
engine,
and drain the cooling system
.
-
Fill the system with fresh water.
-
Warm up the
engine,
and drain the system
.
-Repeat the previous two steps once
more.
-
Fill the system with a permanent type
coolant,
and
bleed the air from the system
(Pg.
24)
.
Pressure testing
Any time the system slowly looses
water,
the system
should be pressure
tested.
~
~::~:: ~:s::~~:=i;:r ::~:~i:; ~~t::
is designad to
work.
The maximum pressure is 1.05
kg/cm
2
(15
psi).
-
Set the motorcycle up on its center stand
.
-Remove the radiator
cap,
and install a cooling system
pressure tester on the radiator filler neck.
-Build up pressure in the system carefully until the
pressure reaches 1.05 kg/cm
2
(15 psi
).
-
Watch the gauge for at least 6
seconds.
If the pressure
holds
steady,
the system is all right.
A.
Pressure Tester
B. Adapter
-Remove the pressure
tester,
replenish the
coolant,
and
install the radiator cap
.
-Run the engine until normal operating temperature is
obtained.
-Remove the radiator cap
carefully,
and recheck for leaks
when hot.
e
lf the pressure drops, check all areas for external
leakage
.
Any
trace or source of leakage shows the
damaged seal or part.
NOTE
: Coolant leakage from the drainage outlet in the
cylinder block shows the damaged mechanical seal (Fig.
Hll 0).
e
lf the pressure drops and no external source is found
,
check for internal leaks.
Droplets in the engine oil
in dicate internal leakage.
Internal water sealing is
accomplished by
0
rings between the cylinder sleeves
and the cyli nder
block,
cylinder head gasket, and
mechanical seal at the water pump.
BALL,
NEEDLE BEARINGS
Ball bearing
wear,
damage
Since the ball bearings are made to extremely close
tolerances,
the wear must be judged by feel rather than
by
measurement.
Clean each bearing in a high flash -point
solvent,
dry
it (do not spin it while it is dry
),
and oil it. Spin it
by hand to check its condition. If it is
noisy,
does
not
spin
smoothly,
or has any rough
spots,
replace it.
Needle bearing
wear,
damage
The rollers in the needle bearings wear so little that
the wear is difficult to
measure. Instead,
inspect the
bearings for abrasion
,
color change, or other damage.
If there is any doubt as to the condition of either
bearing, replace it.
OIL SEALS
The crankshaft oil seal in the right engine cover
forms a seal between the crankchamber and the contact
breaker point
cavity.
If this seal is damaged
,
oil will
leak into the contact breaker point
cavity,
and foul
the contact breaker points. Any damaged
,
hardened
,
or otherwise defective oil seal will allow oil to
leak.
Oil seal damage
Inspect the oil
seals,
and replace any
if
the lips are
misshapen,
discolored (indicating the rubber has
dete-
riorated),
hardened,
or otherwise been
damaged.
Since
an oil seal is nearly always damaged on removal
,
removed
oil seals must be
replaced.
When pressing in an oil seal
which has manufacturer 's
marks,
press it in with the
marks facing
out.
Press the seal in so that the face of
the seal is level with the surface of its
hole.
209

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