Husqvarna K1270 Workshop Manual page 53

GUDGEON PIN PUNCH 505 38 17-05
The gudgeon pin punch is used to press out the
gudgeon pin. It is also used for assembly.
DISMANTLE THE GUDGEON PIN
Push out the gudgeon pin in any direction.
Can usually be done by hand. If it is tight, it can be
knocked out with a small hammer and gentle force.
Use a wooden block or a large plastic hammer as a
counterhold on the opposite side.
DISMANTLE THE NEEDLE BEARING
Press the needle bearing out of connecting rod.
PISTON RINGS
The piston rings are dismantled with out tools
using the following method. Slide the piston ring
towards you, so you can grip the ends. Carefully
expand the ring and move it away from you, so it
can be lifted out of the groove at the rear edge.
Assemble the parts in the reverse order.
NOTE! Important when assembling:
The piston ring groove has a guide pin that
prevents the piston rings from rotating.
Fit so that the open part of the piston ring aligns
with the guide pin.
Turn the piston ring with the bevelled edge
towards the guide pin.
EXAMINE THE COMPONENTS
Investigate the cause of the impaired compression
or failure. With normal wear, due to many hours of
use, components are measured and replaced if
necessary. See chapter 16.4. Wear tolerances on
page 54
Machines with a few hours of use should be exam-
ined carefully to identify the cause of the abnormal
wear, which is described later in this chapter.
DISMANTLE GUDGEON PIN
DISMANTLE NEEDLE BEARING
DISMANTLE PISTON RINGS
PISTON RINGS CLOSE-UP
Cylinder/Piston
53
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