Engine Overhaul Manual
Jabiru Aircraft
Pty Ltd
Jabiru 2200 & 3300 Aircraft Engines
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ISSUE
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Dated : 28/10/2014
Issued By: AS
Page: 51 of 201
L:\files\Manuals_For_Products\Engine_Manuals\Overhaul_Manual\JEM0001-7_Overhaul_Manual_DRAFT_(29_10_14).docx
The caps are located to the rods using 2 off 3mm dowel pins. Care must be taken not to damage these
pins on disassembly.
The brown discolouration of the rods caused by hot oil
– this must be removed if the rod is to be subject
to a MPI.
Note that each rod and cap are batch numbered and should be kept in pairs to maintain engine
balance.
4.5.20 Crankshaft
Using a long drift, punch the rear welch plug down until it can be removed from between the rear crank
throws. Figure 61 shows the plug emerging, preceded by some sludge.
Figure 61
– Welch Plug & Propeller Flange Removal From Crankshaft
Remove the crankshaft from the stand, clamp it between the heavily padded jaws of a vice and remove
the propeller flange. Once again, heat the end of the crank (and NOT the cap screws) and then remove
each cap screw taking care not to break them in the process.
Lay the crankshaft on the bench and drive the 2 front welch plugs out from the rear
– feed a long drift all
the way through the crankshaft and drive both plugs out of the front of the shaft.
Remove the front crankshaft seal housing from the crankshaft and drive the seal out of the housing.
4.5.21 Group The Parts
This completes the complete overhaul disassembly stage. All parts can now be separated into 2
groups: the discard group, which will contain all of the parts that are subject to mandatory replacement;
and the inspection group, which will be cleaned and inspected prior to being returned to service.
Heat and remove cap screws
Welch plug and debris emerging
