Lubrication System - KTM 450 SX-F Repair Manual

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4
1
1

Lubrication system

– Check the O-rings and gaskets
1
– Replace the oil filter every time you change the engine oil.
3
– Clean the oil screen and replace if damaged.
4
– Check the inner and outer rotor on the oil pump
inner and outer rotors with each other.
– Check the oil pump covers
– Lay the oil pump shaft
7
– Check the oil pump gear
– Check the oil pump housing
bp
9
8
2
3
1
for damage and replace if necessary.
2
5
for seizing marks on the inside and replace if necessary.
6
on a level surface and check for runout.
and oil pump idler gear
8 9
and bypass valve for damage and wear.
bk bl
bo
bm
bn
6
5
7
bk
bl
5
for damage and deposits. If they will be used again, do not replace the
for damage and wear.
– Remove the plug together with the seal ring
bm
– Remove the spring and the ball
bo
Assemble in the reverse order, paying attention to the following items:
– Inspect the parts for damage or wear.
– Replace any damaged or worn parts.
Minimum length of spring
Thickness of seal ring
Tightening torque for plug
NOTE: the bypass valve opening pressure is reduced if the length of
the spring is less than 36.0 mm or if the seal ring is thicker than 1.5 ±
0.2 mm. This will reduce the oil pressure and lead to excessive wear.
5
2
6
.
bn
.
bp
: 36.0 mm
bo
: 1.5 ± 0.2 mm
bn
: 18 Nm
bm
5-6