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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: 153 of 201
L:\files\Manuals_For_Products\Engine_Manuals\Overhaul_Manual\JEM0001-7_Overhaul_Manual_DRAFT_(29_10_14).docx
Figure 198
– Engine Turning Tool, Installed Oil Pump
Fit a new BS112V O ring to the port plate to seal the pressure delivery port (Figure 197).
Apply Loctite 515 sealant to 1 face of each joint
– as shown with the rear side of the pump housing and
the rear side of the port plate is recommended. Ensure the O rings are coated with sealant.
Fit the port plate to the engine, then fit the new woodruff key and the oil pump gears to the camshaft.
Ensure that the key is sitting correctly and that the dimples on the oil pump are both visible as shown in
Figure 197. Occasionally the key may need to be lightly sanded to fit the cam or pump gears. This can
be done by placing a piece of 600 grit wet and dry emery paper on a flat surface and rubbing the key
against it. The fit needs to be snug however
– do not remove too much material.
Fit the outer pump housing over the gears and insert & hand tighten the retaining cap screws. Use
Loctite 243 on the threads and ensure the Jabiru bird is oriented correctly.
While the housing is still loosely held to the engine, rotate the crankshaft through at least 2 full
revolutions. This turns the cam and allows the oil pump to find its preferred position. The housing can
now be tightened to the value given in Table 9. Failure to turn the engine can result in the oil pump
being offset from the cam axis
– this applies side loads to the cam and can eventually crack it or break
the tip off altogether.
7.8.18 Oil Pressure Relief Valve
Figure 199
– Lapping Oil Pressure Relief Valve
If new parts are being fitted to the oil pressure relief valve it will be necessary to lap the valve poppet
against the washer to ensure a good fit and seal. This is done by hand, using valve grinding paste to
bed the parts together.
After lapping ensure that all parts are thoroughly cleaned to remove all valve grinding paste.