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Engine Overhaul Manual
Jabiru Aircraft
Pty Ltd
Jabiru 2200 & 3300 Aircraft Engines
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Dated : 28/10/2014
Issued By: AS
Page: 67 of 201
L:\files\Manuals_For_Products\Engine_Manuals\Overhaul_Manual\JEM0001-7_Overhaul_Manual_DRAFT_(29_10_14).docx
Figure 74
– Hydraulic Lifter (top left), Solid Lifter (lower left), Roller Follower (right)
5.10.2.4 Inspection
If hydraulic lifters are removed for servicing they must be inspected for wear on the camshaft contact
face. Note that the lifters have a slightly convex (dome-shaped) base. A straight edge placed over the
base (Figure 75) should not quite sit flat on the base
– a small gap must be visible at either side. A lifter
which has worn flat must be discarded. The lifter must also be replaced is there is any other adverse
wear of the lifter base
– such as galling or pitting of the working surface.
Before installation all hydraulic lifters must be polished around their base as shown below to remove
any burrs and to polish off the sharp corner which can otherwise damage the cam. This is done using a
“Scotch Brite” wheel on a bench grinder or similar – very little material is removed, just enough so that
the corner feels smooth instead of sharp.
Solid lifters require a careful inspection at full overhaul. The camshaft contact face of the solid lifter is
flat and can be checked for wear using a straight edge.
Figure 75
– Hydraulic Lifter Inspection
5.10.3 Camshaft
5.10.3.1 Mandatory updates
Check the camshaft material (all engines)
– solid lifter cams made from a casting (indicated by the
camshaft being hollow) must be replaced with a current billet steel solid lifter camshaft and new lifters.
Check the camshaft identification:
– solid lifter engine camshafts will have no markings around the front of the cam at all, indicating a
solid lifter camshaft
Polish this corner
around the base
of the lifter