Oil Circuit; Oil Change And Bleeding Of The Oil System - KTM 400LC4 Owner's Handbook Manual

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Oil circuit

The oil pump
12
oil filter
sprays engine oil onto the piston pin bearing and piston head. The second
oil line takes the main flow of oil into the front pipe of the frame
the engine oil is cooled down. Afterwards the engine oil runs through the
fine screen filter
engine oil is pumped through the oil line and the clutch cover into the
crankshaft to the conrod bearing
additional oil pump
it through the oil line
4
gear wheels, the engine oil reaches the oil sump. The timing chain
through the oil sump and transports the engine oil upwards to the cylinder
head. Through the bore hole
valves.
3

Oil change and bleeding of the oil system *

Note: For improved cooling of the engine oil, the front tube of the frame
was integrated into the oil circuit.Thus, when you change the oil, you also
have to drain the engine oil from the front tube and bleed the oil system. If
the oil system is not bled at all or bled insufficiently, the bearings of the
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
A
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
Place the motorcycle on a horizontal surface. Remove the two plugs
bo
, and drain oil into a container. Models with integrated font pipe: Remove
cover, unscrew plug
A
P
LUG
15
Clean all 3 plugs thoroughly with a fireproof solvent and compressed air, in
order to remove the metal abrasion. After all the oil has drained through,
clean sealing areas and install plugs with gaskets. Tighten plug
30 Nm (23 ft.lb) and plugs
Remove oil dipstick on the clutch cover, fill with 1,3 litre engine oil and
attach plug again.
If the engine oil has been drained from the front pipe of the frame, you
must bleed the oil system !
To facilitate bleeding of the oil system, we have added a hose connection
piece and a plastic hose to the set of tools. Take an empty oil can (1 liter)
and drill a 7 mm-diameter hole into the lid. Screw the hose connection
piece into the lid from the outside, and secure it from the inside with the
M8 hexagon nut.
Slip the plastic hose onto the hose connection piece, and you will have your
filling tool.
B
Fill 0.6 liters of engine oil into the can and remove the plug
steering head. Introduce the plastic hose into the vent hole
liters of engine oil into the frame's front tube. Remove plastic hose, start
engine, and let it idle (approx. 20 seconds) until oil escapes at the hole
As soon as oil starts to escape, turn off the engine, and mount the plug
together with the gasket.
1
pumps the engine oil past the by-pass valve
3
. After the oil filter, an oil line branches off to a jet
6
, which filters out even the finest impurities. The cleaned
7
8
sucks the engine oil out of the crankcase and pumps
9
to the gear wheels of the 4th and 5th gear. Via the
bl
the oil reaches the camshaft
WARNING
,
AND THE ENGINE OIL IN IT IS VERY HOT
.
bp
at the lower end of the front pipe and drain oil.
CAUTION
!
,
MUST NOT BE REMOVED THIS IS PART OF THE BY
bo bp
and
CAUTION
!
2
through the
5
and drips into the crankcase. An
bm
!
- .
PASS VALVE
with 20 Nm (15 lb.ft).
!
bq
next to the
B
, and fill 0.6
4
which
, where
bk
runs
and the
27
-
DO NOT
bn
and
bn with
B
.