KTM 85 SX 2004, Repair Manual, Page: 46 / 89

5-7
LOCTITE 243
12
10
8
9
2
13
14
15
4
1
3
5
6
7
12
11
Dismounting the centrifugal timer and the water pump
– Remove both of the bolts
1
and take off the closing cover
2
together with the O-ring.
– Loosen the nut 3 on the centrifugal timer.
– Pull the centrifugal timer
4
out of the housing.
– Remove both of the bolts
5
and take off the water pump cover
6
together with the gasket.
– Loosen the bolt
7
on the water pump wheel.
– Pull off the water pump wheel
8
and take out the water pump
shaft
9
.
– Cleanse all parts and check for wear.
– Check the ball heads on the linkage
bn for play.
– Check the water pump drive wheel
bo
for damage or wear.
– Check the grooved ball bearings
bk
and
bl
for wear.
NOTE: The centrifugal timer does not require any maintenance work or
adjustments.
Replacing the grooved ball bearings
bk
for the water pump and the
centrifugal timer bl :
– Remove the shaft seal ring bm from the water pump and heat the
housing half in an oven to approx. 150° C.
– When it has reached a temperature of 150° C, the bearings will fall
out of the bearing seats by themselves when the housing half is
tapped on a flat wooden surface.
– Press in new bearings until flush.
– Press in a new shaft seal ring for the water pump from the outside
with the sealing lip facing inwards until flush.
Preassembling the clutch cover
– Grease the shaft seal ring
bm
for the water pump and mount the
water pump shaft
9
together with the washer (10x14x0.5 mm).
– Mount the water pump wheel, apply Loctite 243 to the bolt
bp
and
tighten together with the washer to 4 Nm.
– Mount the water pump cover and gasket.
– Insert the centrifugal timer in the housing and tighten the self-locking
nut to 6 Nm.
– Mount a new O-ring and mount the closing cover.