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: 105 of 201
L:\files\Manuals_For_Products\Engine_Manuals\Overhaul_Manual\JEM0001-7_Overhaul_Manual_DRAFT_(29_10_14).docx
Figure 123
– Crankcase Clamping Preparation
Apply bearing blue to one joining surface of a crankcase half and under the main bearing shells, fit the
dowels and main bearing shells and fit the crankcase halves together.
The oil filler tube is fitted to the right crankcase now or later during final assembly.
Clamp the case halves using the old studs and nuts with 8mm packers under the nuts. Torque to the
value given in Table 9 (as appropriate to the bolt size) in 3 stages, working from the centre studs out to
the front and rear studs. Measure the main bearing bore size with the new main bearing shells in place.
The bore size with the new main bearing shells in place must be within the limits given in Table 10
when measured directly across between the case halves.
The diameter of the main crankshaft journals subtracted from this bearing inner diameter gives the
bearing clearance. Clearances must be within the limits given in Table 12.
Disassemble the case halves & check for 90% surface contact on the back of the bearing shells &
across all jointing surfaces. Clean off the bearing blue with some kerosene or suitable solvent on a
clean cloth & refit the bearing shells to the main bearing bores. Apply a light coating of oil to the shells.
Figure 124
– Fitting Thrust Bearings
Fit the thrust washers to the machined positions either side of the second front main bearing: use some
general purpose grease to hold them in place.
Bearing blue to joining
surfaces
Case clamping equipment
Thrust bearing
Thrust bearing fitted to case
