KTM DUKE 640 e - Checking and Adjusting the Steering Head Bearing; Changing the Spring Preload of the Shock Absorber

ENGLISH
17
Checking and adjusting the steering head bearing*
Check steering head bearing for play periodicaly. To check this, put
motorcycle on stand so that the front wheel is off the ground. Now try to
move the fork forward
and backward - no play should be discernable To
adjust, loosen the five clamp screws
1 of the top triple clamp and turn stee-
ring stem bolt clockwise
2 until there is no more play. Don’t tighten the
steering stem bolt all the way, otherwise the bearings will be damaged.
With a plastic hammer, lightly tap on the top triple clamp to release ten-
sion. Re-tight the five clamp screws to 25 Nm (18 ft.lb).

WARNING

I F THE STEERING HEAD BEARING IS NOT ADJUSTED TO BE FREE OF PLAY , THE MOTORCYCLE
WILL SHOW AN UNSTEADY DRIVING PERFORMANCE AND CAN GET OUT OF CONTROL
.
!
CAUTION
!
I
F YOU DRIVE WITH PLAY IN THE STEERING HEAD BEARING FOR LONGER PERIODS
, FIRSTLY
THE BEARINGS AND THEN THE BEARING SEATS IN THE FRAME WILL BE DESTROYED
.
At least once a year, the steering head bearings should be greased.
Changing the spring preload of the shock absorber
KTM sets the shock absorber for a driver only, weighing approximately 75
kg (165 lb). If you want to take a passenger with you, of if you weigh con-
siderably more or less than 75 kg (165 lb), you should change the spring
preload accordingly. This is easily done.
NOTE:
– Before changing the spring preload note down the basic setting, e.g.
how many threads are visible above the adjusting ring.
– One rotation of the adjusting ring
5 changes the spring preload by
approximately 2 mm.
Loosen the allan head screw
4 at the adjustment ring 5. Use the special
wrench
6 from the tool set to turn the adjusting ring as required. Place the
adjusting ring in a suitable position, and tighten the allan head screw.
ADJUSTMENT VALUES - SPRING PRELOAD:
Minimum preload...............................................................10 mm
Preload driver only 75 kg BASIC SETTING..........................23 mm
Preload with passenger.......................................................28 mm
A = spring preload
1
2
5
6
A
4