26 Series 4144 Powerhead
: Attach the snap ring (1) to the 
magnet (2) so that the snap ring 
gap is on the flat side of the tool's 
shank (arrow).
: Push the large slotted diameter of 
the sleeve over the magnet and 
snap ring.
The inner pin (2) must point towards 
the flat face (3) of the tool's shank.
533RA128 TG
12
3 2 1
296RA078 TG
: Press the installing tool 
downwards into the sleeve until 
the magnet butts against the end 
of the guide slot.
Use a suitable base (wooden 
board).
: Remove the sleeve and push it 
on to the other end of the shank 
as far as stop.
The inner pin (arrow) must again 
point toward the flat face.
296RA79 TG
533RA131 TG
– Position the snap ring against the 
carrier side of the piston.
: Apply the installing tool 
5910 890 2208 with the sleeve’s 
taper against the piston boss, 
hold the piston steady, center the 
tool shank exactly and press 
home until the snap ring slips into 
the groove.
Make sure the tool shank is held 
square on the piston pin axis.
Fit the snap ring (1) so that its gap 
(arrow) points down – it must not be 
near the recess (2).
– Check installed position of snap 
ring.
938RA070 TG
2
1
938RA071 TG