Engine Overhaul Manual
Jabiru Aircraft
Pty Ltd
Jabiru 2200 & 3300 Aircraft Engines
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Dated : 28/10/2014
Issued By: AS
Page: 110 of 201
L:\files\Manuals_For_Products\Engine_Manuals\Overhaul_Manual\JEM0001-7_Overhaul_Manual_DRAFT_(29_10_14).docx
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The clips must be installed so that the “rounded” side faces the item being retained (the gudgeon
pin in this case). See Figure 134 for an illustration of the correct and incorrect orientation. A clip
that is installed the wrong way won’t be able to carry as much load and will fail more easily.
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When fitting the clip, take care to compress it by the bare minimum amount required. DO NOT
compress the clip until the eyes touch. Over-compressing will permanently damage the clip: Figure
135 shows a clip which was over-compressed lying on top of a brand new clip. Note how the clip on
top has been bent to a smaller size compared to the one underneath. This damage to the clip
reduces the force it can apply to its housing and makes it easier to dislodge. Specially modified
circlip pliers such as those shown in Figure 21 may be used to prevent damaging clips.
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As the clip is fitted, listen for the
crisp “snapping” sound that indicates it has dropped fully into place.
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Orient the clip as shown in Figure 134: the opening in the clip faces along the axis of the barrel.
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Ensure that both ends of the clip are positioned in full-depth sections of the groove
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Always give the installed clip a close inspection after installation. Use the circlip pliers or a small
screwdriver or pick to check that it is tightly in place
– as shown in Figure 134, apply an “opening”
load to the eyes to expand the clip. The clip should not move and should not spin in the piston.
If
the clip moves, discard it and fit a replacement.
Figure 133
– The Two Sides of Circlips
Figure 134
– Clip Installation Detail
Test load directions