Oil Circuit; Oil And Screen Filter Change, Bleeding Of The Oil System - KTM 640 LC4 ADVENTURE Owner's Manual

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A
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Oil circuit

The oil pump
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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
filter
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
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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
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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
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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
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Place the motorcycle on a horizontal surface.
Remove 5 screws to remove the engine guard
Remove the two screw plugs
fine filter
Remove the two plugs
P
LUG
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
plug
10 Nm. Clean sealing surfaces on the frame breast pipe
screen filter with engine oil, and oil rubber gasket
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filter and screw it back in place, your bare hand will do.
Remove screw connection on the clutch cover, fill with 1,3 litre engine oil
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and attach plug again.
– U
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
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pumps the motor oil past the bypass valve
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. Beyond the oil filter, one of the oil lines forks off to a jet
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that removes even the finest of contaminants from the motor oil.
bk
also dips into the oil sump and propels motor oil upwards to
bl
.
WARNING
,
AND THE ENGINE OIL IN IT IS VERY HOT
.
bo
and
6
with an oil-filter wrench and unscrew by hand.
bn and bo , and drain oil into a container.
!
CAUTION
A ,
MUST NOT BE REMOVED THIS IS PART OF THE BY
bq
must be removed to allow the motor oil to flow out of the
bo with 30 Nm and plug bp
!
CAUTION
KTM
SE ONLY ORIGINAL FINE SCREEN FILTERS
.
!
2
5
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and drains from there into the
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suctions the motor oil out of the crank
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to the gear wheels of the 4th
bm
and the valves
bn
.
bp
and drain oil into a vessel. Loosen the
!
- .
PASS VALVE
with 20 Nm. Tighten the screw
br , fill new fine
bs . Replace fine screen
!
. U
SING ANOTHER FILTER BRAND CAN
and through
4
where the
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-
DO NOT
bq with
,
YOU