Rotax 912 Series Maintenance Manual page 156

Fig. 72-103
Effectivity 912/914 Series
Edition 1 / Rev. 0
BRP-Rotax
Maintenance Manual
■ CAUTION:
Always use new mono hook circlips! Used retaining
rings or retaining rings which have already been fitted
have too little tangential tension, can twist and thus
wear the groove in the piston.
Fit piston pin circlip with installation tool, part no. 877802. To do so,
press the mono hook circlip (11) into the groove (14) of the mounting
sleeve (13) and push guide punch (12) into the mounting sleeve. Slide
mounting sleeve onto the installation tool.
■ CAUTION : The position of the mono hook circlips is dictated by the
recess on the piston. When assembled, the open side
of the mono hook circlip must be positioned opposite
the piston crown. See Fig. 72-100.
Push installation tool (15) into the positioning gauge and press the ring
towards the front as far as the stop. Now position the complete
installation tool (15) on the piston. Support piston with hand and exert
strong pressure on the installation tool to push the mono hook circlip
(11) into the groove (16) of the piston. Apply same procedure on the
opposite side of the piston.
◆ NOTE:
If an additional piston (17) is fitted for hookless circlips,
the mono hook circlip must be reworked as described
in SI-21-1997,"Introduction of the mono hook circlip",
latest issue. See Fig. 72-105.
13
12
14 11
04706
15
72-00-00
page 88
May 01/2007