Piston - Stihl TS 500i Service Manual

Clutch side half of crankcase
: Carefully drive the oil seal out
with a suitable punch
– Examine and clean the
crankcase half, replace if
necessary
Replace the ball bearings if the
crankcase half is in good condition.
1
– Heat the area around the bearing
seat to approx. 150 °C (300 °F)
The bearing (1) drops out of its own
accord when this temperature is
reached.
58
– Heat the area around the bearing
seat to approx. 150 °C (300 °F)
: Press the ball bearing home as
far as possible
The ball bearing must be fitted
rapidly, as it absorbs heat and
expands.
– Install crankshaft, b 6.7
– Install oil seals, b 6.3
– Reassemble remaining parts in
reverse order
6.8

Piston

Before removing the cylinder,
decide whether the crankshaft is to
be removed, b 6.7
– Remove the cylinder, b 6.6
Two snap rings are fitted, but only
one need be removed in order to
remove the piston pin
– Their installation is the same on
both sides.
: Pry the hookless snap ring out of
the recess (arrow) on the fan side
with a suitable tool
2
: Fit the assembly drift (1)
0000 893 4700 on the clutch side
The assembly drift can be inserted
through the fitted snap ring.
: Drive the piston pin (2) out of the
piston with the assembly drift (1)
0000 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.
1
TS 500i