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Kawasaki KZ1300-A1 Quick Reference Manual Page 200

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MAINTENANCE--ENGINE
The
second
route for filtered oil is to the
left side
drive shaft needle bearing, journals of drive gears,
and
left side
driven
shaft needle bearing.
The third route
for
filtered oil is to the
timing
chain
and
cam chain sprocket
journal and
left side water pump
drive shaft journal.
The fourth route for filtered oil
is
to the
secondary
chain sprocket journal.
The fifth route for
filtered
oil
is
to the output
shaft
needle
bearing,
output shaft ball bearing, driven
shaft
needle thrust bearing, right side driven shaft ball
bearing,
and
driven
gear
journals.
Both the oil pressure
switch and the oil
pressure
relief
valve are important for
maintaining
a constant oil pres-
sure. The
oil pressure
switch, mounted on the right side
of the lower crankcase
halves,
checks on the oil pressure
in
the
main
oil
passage
and lights the oil pressure warn-
ing
I
ight is the
pressure
falls
below
a safe level.
If
the oil
pressure
is insufficient,
the oil pump is
worn or
mal-
functioning
or
there is an
insufficient
oil supply to the
pump.
On
the other
hand
,
if the oil pressure becomes
excessive, such as when the engine is first started
(especially in cold weather), the relief valve reduces the
oil pressure. The relief valve opens whenever a pressure
of 5.2 kg/cm
2
(74
psi) is exerted on the valve spring.
Oil pressure measurement
To inspect
the relief valve
ope ration,
check the
oil
pressure with the engine cold
(about room temperature).
NOTE:
If
the
engine is warmed up
already,
begin
by
measuring the oil pressure at the normal
operating
temperature.
The engine must be stopped.
Remove
the
oil
pressure
indicator switch from the right side of the
crankcase,
and
connect the oil
pressure
gauge and adapter
(special
tools) in its
place
to measure oil
pressure.
A.
Oil Pressure Gauge (57001-164)
B. Adapter (57001-1033)
Start
the engine, and note the oil pressure while
running the engine at various speeds. A normal relief
valve
keeps the maximum oil pressure between the
values in Table H74.
If
the oil pressure exceeds 6.0
kg/cm
2
(85 psi) by very much, the relief
valve
is stuck in
its closed position.
If
the oil
pressure
is much lower
than 4.4 kg/cm
2
(63 psi) at more than 5,000 rpm, the
relief valve may be
stuck
open, or
there
may be other
damage
in
the
lubrication
system.
Table H74
Relief Valve Opening Pressure
Standard
4.4 - 6.0 kg/cm
2
(63
- 85 psi)
Warm up the
engine,
and
measure the oil pressure
at
the normal operating
temperature.
Run the engine at the specified speed
(Table
H75)
and read
the oil pressure
gauge.
Table H75
Oil Pressure
Oil
Pressure @4,000
rpm,
100°C
(212°F)
About 2.0 kg/cm
2
(28
psi)
If the oil pressure
is
significantly below
the standard
pressure
,
inspect the engine oil
pump
and relief valve.
If
the pump and relief valve are
not
at fault, inspect
the
rest
of the lubrication system.
Oil pressure switch
inspection
The switch
should turn on the warning light whenever
the
ignition
switch is on with the engine not
running.
If the
light
does not go on, disconnect the
switch
lead.
Connect the positive lead of a 20V DC range
voltmeter
to the switch
lead
and ground the voltmeter
negative
lead
to the engine. Turn the
ignition
switch
to the
"ON"
position,
and read
the
voltmeter.
If the
voltmeter
does not indicate battery voltage, the trouble
is either
defective wiring
or a
burned-out indicator bulb.
A.
Switch
Lead
If
the voltmeter does indicate battery
voltage,
then
the oil pressure switch may be
defective.
Use an ohm-
meter to check for continuity between the switch
terminal and the
switch
body.
With the switch lead
disconnected, and the engine stopped, any reading
other
than
zero
ohms
indicates that
the
switch is at fault.
The switch should turn off the warning light when-
ever
the engine is running
faster
than the specified speed.
If
the
light
stays
on,
stop
the engine immediately, dis-
connect
the lead
from
the
switch, and connect
the
ohmmeter between the switch terminal
and
the engine
(chassis
ground).
The meter should
read
zero ohms
when the engine is off and infinity when the engine is
200

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