Engine Overhaul Manual
Jabiru Aircraft
Pty Ltd
Jabiru 2200 & 3300 Aircraft Engines
This document is controlled while it remains on the Jabiru server. Once this no longer applies the document becomes uncontrolled.
ISSUE
1
2
3
4
5
6 7
Dated : 28/10/2014
Issued By: AS
Page: 194 of 201
L:\files\Manuals_For_Products\Engine_Manuals\Overhaul_Manual\JEM0001-7_Overhaul_Manual_DRAFT_(29_10_14).docx
12.4 Crankshaft
12.4.1 Maximum Time In Service
Jabiru Aircraft apply a maximum Time In Service of to a crankshaft as detailed in Section 9.3.
Once a crankshaft reaches this Time In Service it must be discarded and replaced with a new item.
12.4.2 Dowel Pins
Section 5.9.1.1
describes the difference between “old” and “new” crankshafts. “Old” type crankshafts
must be replaced with “new” type or re-worked to the “new” configuration.
Most old crankshafts can be re-worked to new specifications. Any crank which has not exceeded its
maximum Time In Service and which uses 5/16” flywheel mounting cap screws may be re-worked as
detailed in Jabiru Procedure AVDALSR038.
Details of this procedure are reproduced below for ease of reference.
12.4.2.1 General
This procedure is for the installation of crankshaft to flywheel dowels on the 2200 and 3300 Jabiru
engines.
12.4.2.2 Applicability
To be carried out at major overhaul (2000hs TSO) of Jabiru 2200 & 3300 engines.
2200A Engines
- up to S/No. 2057
1
3300A Engines
- up to S/No. 836.
See service bulletin JSB 012 for details.
12.4.2.3 Special Tools
The following special tools are required for this procedure.
a. Dowel Hole Drilling Fixture (P/No. 8A021B0D) - Figure 207.
b.
15/64” drill bit - Figure 208.
c. Spiral ream Diameter 6 Tolerance H7 - Figure 208
d.
4 x 1 1/2” x 5/16”UNF cap screws - Figure 208
e.
4 x 5/16” UNF nuts.
Figure 207
– Drilling Fixture – Crankshaft Side on Left, Flywheel Side On Right
1
Note that some early engines use ¼” bolts to attach the flywheel. These crankshafts cannot be drilled to accept
dowels. The crank must be replaced with a new part.
