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Engine Maintenance Manual
Jabiru Aircraft
Pty Ltd
JEM0002-5
Jabiru 2200 & 3300 Aircraft Engines
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ISSUE
1
2
3
4
5
Dated : 2nd June 2015
Issued By: AS
Page: 68 of 103
L:\files\Manuals_For_Products\Engine_Manuals\Engine Maintenance Manual 22 & 33\JEM0002-5.docx
Figure 40
– Washer Thickness Measurement
9.17
Valve Clearance Adjustment (Solid Lifter Engines Only)
Required Tools:
Tools as required in section 9.15
Thickness gauge
Spark Plug Spanner
Spanners
Screwdrivers
Parts and Material:
N/A
Type of Maintenance:
Heavy Maintenance
Level of Certification:
L2 or LAME (A&P or LSA Repairman / Maintenance)
Return to Service:
L2 or LAME (A&P or LSA Repairman / Maintenance)
Always carry out a cylinder head bolt tension check (Section 9.15) before adjusting valve
clearances.
Valve clearance must be adjusted to:
Inlet
0.254mm (.010")
Exhaust
0.254mm (.010")
Adjust the tappets when the engine is
cold
.
Adjust the valve clearances use the following procedure:
1. Remove the cowls, ram air ducts, rocker covers & at least 1 spark plug from each cylinder.
2. Start with a particular cylinder head
– for example the rear head on the pilot’s side of the
aircraft. Turn the crankshaft to the point where the valve is fully depressed then rotate it
through another whole revolution. This will place the follower exactly on the “back” of the
cam where there is no lift. Note that the crank should always be turned in the direction of
its normal rotation.
3. Using a spanner and screwdriver (or special tool as shown below) adjust the clearance.
4. Repeat this process for each valve in the engine, working systematically from 1 head to the
next.
5. When all valves have been adjusted, re-assemble the engine.
Thicknes
s