Operation Manual

48 MS 241 C
: Push assembly drift (1)
1110 893 4700 through the
installed snap ring
: Push the piston pin (2) out of the
piston with the assembly drift (1)
1110 893 4700
If the piston pin is stuck, tap the end
of the drift gently with a hammer to
loosen it.
The piston must be held steady
during this process to ensure that
jolts are not transmitted to the
connecting rod.
– Remove the piston
– Examine the piston rings and
replace if necessary, b 6.8
: Take out the needle bearing (1),
examine and clean it, replace if
necessary
2410RA131 TG
1
2
2410RA132 TG
1
Installation
– Coat needle bearing with oil and
slide it into the rod eye
Line up the piston so that the
arrow (arrow) in the piston base
points towards the spiked
bumper (exhaust port)
The assembly drift can be inserted
through the fitted snap ring.
– Position the piston on the rod eye
: Push assembly drift (1)
1110 893 4700 with the stub end
first through piston hole and rod
eye (needle cage) and secure
the piston
– Coat the piston pin (1) with oil
: Fit the piston pin (1) on the stub
of the assembly drift (2) and slide
it into the piston
2410RA133 TG
1
2410RA134 TG
21
: Remove the sleeve (1)
5910 893 1707 from the installing
tool (2) 5910 890 2210
: Attach the snap ring (1) to the
magnet (2) and align it so that the
snap ring gap is on the flat
side (arrow)
: Push the slotted opening of the
sleeve over the magnet and snap
ring
The inner pin (1) must point towards
the flat face of the tool's shank (2).
5904RA089 TG
2
1
165RA153 TG
1
2
5904RA090 TG
2
1