KTM 400-660 LC4 1998-2005, Repair Manual

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2-8E
Repair manual KTM LC4
Art.-Nr
. 3.206.014 -E
Oil circuit
The oil pump
1
pumps the engine oil past the by-pass valve
2
through the oil filter
3
. After the oil filter, an oil line branches off
to a jet
4
which 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
5
, where the engine oil is cooled down. Afterwards the engine oil runs through the fine screen filter
6
, which filters out even the finest impurities. The cleaned engine oil is pumped through the oil line and the clutch cover into the
crankshaft to the conrod bearing
7
and drips into the crankcase. An additional oil pump
8
sucks the engine oil out of the
crankcase and pumps it through the oil line
9
to the gear wheels of the 4th and 5th gear. Via the gear wheels, the engine oil
reaches the oil sump. The timing chain
bk
runs through the oil sump and transports the engine oil upwards to the cylinder head.
Through the bore hole bl the oil reaches the camshaft bm and the valves.
8
7
5
6
9
10
12
11
1
2
3
4
Drain plug - frame oil
up to Model 2000
Drain plug - frame oil
Model 2001 onwards