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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: 70 of 201
L:\files\Manuals_For_Products\Engine_Manuals\Overhaul_Manual\JEM0001-7_Overhaul_Manual_DRAFT_(29_10_14).docx
5.10.4.2 Cleaning
Wash the pump rotors and housing thoroughly with kerosene and dry.
Coat the pump rotors with engine oil or other corrosion preventative.
5.10.4.3 Inspection
Inspect visually for any signs of wear or damage to the rotor surfaces.
Visually inspect the woodruff key which drives the pump. It is normal for there to be some light marking
on this part, however significantly marked keys must be replaced.
Measure the clearances between the parts and ensure they are within the limits given in Table 12.
Note that oil pump gears must be replaced as a set.
Replace any components that fail to meet these requirements.
Note that the inner and outer rotors each have a machined alignment marking as shown arrowed in
Figure 80. These alignment markings must both face up when the rotors are in the housing.
Note also that the alignment markings will move in relation to each other as the inner rotor rotates in
relation to the outer rotor.
Figure 80
– Inspecting Oil Pump
5.10.5 Oil Pressure Relief Valve
5.10.5.1 Mandatory updates
Figure 81
– Oil Pressure Relief Valve