Oil Circuit; Oil/Screen Filter Change - KTM 640 LC4 Owner's Manual

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Oil circuit

The oil pump
12
the oil filter
that injects motor oil to the piston pin bearing and the piston head. The
second oil line leads the main oil flow to the frame breast pipe
motor oil is cooled off. Then the motor oil flows through the fine screen
6
filter that removes even the finest of contaminants from the motor oil.
The cleansed motor oil is pumped via an oil line and the clutch cover into
the crankshaft to the conrod bearing
crank case. A additional oil pump
case and pumps it through the oil canal
4
and 5th gears. The motor oil reaches the oil sump via the gear wheels. The
timing chain
the cylinder head. The motor oil reaches the carnshaft
through the bore
3
Oil and screen filter change, bleeding of the oil system *
NOTE: The frame breast pipe is integrated into the oil circuit for the sake of
more effectively cooling the motor oil. It is thus important when changing
the oil to also remove the fine screen filter, to drain the motor oil from the
breast pipe and to de-aerate the oil system.
If the oil system is not bled at all or bled insufficiently, the bearings of the
A
engine will not get enough lubrication, which in turn may result in engine
failure.
Therefore, we recommend that you have the engine oil changed by your
authorized KTM mechanic. During the guaranty period, the oil change must
be performed by an authorized KTM mechanic. Otherwise, the guarantee
will become void.
The engine oil change is to be carried out when the engine is still warm.
A
N ENGINE HAVING BEEN RUN WARM
BURN YOURSELF
6
Place the motorcycle on a horizontal surface. Remove the two plugs
bo , and drain oil into a container.
A
P
LUG MUST NOT BE REMOVED
Remove the screws and the cover
an oil filter wrench and then screw it off by hand.
The screw
frame breast pipe.
Clean the plugs thoroughly with petroleum and compressed air in order to
remove any metal filings. After the oil has drained completely, clean the
sealing areas and remount the plugs together with their gaskets. Tighten
bn
plug with 30 Nm and plug
10 Nm. Clean sealing surfaces on the frame breast pipe
screen filter with engine oil, and oil rubber gasket
filter and screw it back in place, your bare hand will do.
Remove oil dipstick on the clutch cover, fill with 1.3 litre (0.34 US gallons)
17 engine oil and attach plug again.
– U
SE ONLY ORIGINAL
RESULT IN DAMAGE TO THE ENGINE
– I
F THE ENGINE OIL HAS BEEN DRAINED FROM THE FRONT PIPE OF THE FRAME
MUST BLEED THE OIL SYSTEM
1
pumps the motor oil past the bypass valve
3 . Beyond the oil filter, one of the oil lines forks off to a jet
7
8
suctions the motor oil out of the crank
bk
also dips into the oil sump and propels motor oil upwards to
bl
.
WARNING
,
AND THE ENGINE OIL IN IT IS VERY HOT
.
!
CAUTION
,
THIS IS PART OF THE BY
bp
. Loosen the fine screen filter
bq
must be removed to allow the motor oil to flow out of the
bo
with 20 Nm. Tighten the screw
!
CAUTION
KTM
FINE SCREEN FILTERS
.
!
2
and through
5
where the
and drains from there into the
9
to the gear wheels of the 4th
bm
and the valves
-
DO NOT
bn
!
- .
PASS VALVE
6
with
bq
with
br , fill new fine
bs
. Replace fine screen
!
. U
SING ANOTHER FILTER BRAND CAN
,
4
39
and
YOU