Checking The Components Of The Timing Mechanism For Wear; Disassembling The Camshaft And Checking The Components For Wear; Preassembling The Camshaft - KTM 400-660 LC4 1998-2005 Repair Manual

5-12E
8
6
LOCTITE 243
3
1
LOCTITE 243
9
10
9
A
13
5
2
LOCTITE 243
4
LOCTITE 243
7
11
B
12
15
14

Checking the components of the timing mechanism for wear

1
Timing chain guide
Check for signs of wear.
Timing chain tensioner 2
Check for signs of wear.
3
Timing chain
Check rollers for smooth operation and signs of wear.
4
Timing gear
Check teeth for signs of wear.
5
Camshaft gear
Check teeth for signs of wear.
6
Grooved ball bearing
Check clearance.
7
Safety device
Check for signs of wear.
8
Camshaft
Check pivot points and running surfaces for signs of wear.
Disassembling the camshaft and checking the components
for wear
– Remove both the stepped ring
remove the decompression cam
bk
Supporting pin
Check for signs of wear.
bl
Guide pin
Check for signs of wear.
bm
Decompression cam
Check the contact surfaces towards the supporting pin for signs of
wear.
9
Spring
Check length (minimum length: 7.0 mm/0.275 in).
bn
Camshaft
Check for signs of wear at pivot point
pivot point 19.97 mm.

Preassembling the camshaft

9
– Place spring in the bore, compress and slide decompression cam
bm
over it.
bp
– Mount circlip with the sharp side towards the decompression cam.
– Position the open side B
the decompression cam.
bo
– Slide the step ring with open spaces over the lock washer.
bo
and the circlip
bm . Keep a watch on the spring
A
. Minimum diameter of the
of the circlip between the open spaces of
bp
. Carefully
9 .