Aircraft Service Manual
Jabiru Aircraft
Pty Ltd
JTM001-1
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
REVISION
1
Dated: Nov 2011
Issued By: SW
Page: 229 of 233
CAUTION
The Spinner is an important and integral part of the propeller Assembly. It is essential to
ensure adequate engine cooling. The aircraft must not be flown with the Spinner removed.
22.6 TO REMOVE EXISTING PROPELLER
1.
Remove Machine Screws and Tinnerman Washers from Spinner.
2.
Remove Spinner.
3.
Unbolt Propeller Bolts - 6 off.
4.
Remove Bolts, Spinner Flange, Aluminium Propeller Flange, Belleville Washers and
Propeller.
22.7 TO ASSEMBLE AND REPLACE PROPELLER ASSEMBLY
1.
Ensure that Propeller drive bushes
– 6 off, are in place in the Crankshaft Propeller Flange.
Fit the rear spinner backing plate to the flange.
2.
Fit propeller to flange. Ensure that the drive pins are snug fit in the propeller. Loose pins
can cause propeller fretting and engine damage.
3.
Fit Propeller Bolts - 6 off.
4.
Fit front spinner backing plate to front of propeller. The fit Aluminium Propeller Flange,
Belleville Washers - 42 off: (8 per Bolt: assembled in pairs as shown)
5.
Progressively tighten bolts ensuring equal distribution of load and in a normal criss-cross
torque sequence.
6.
Using Torque Wrench, tighten Bolts to 6lb.ft (72 inch.lbs).
7.
Check tracking of Propeller by locating a fixed object on a flat floor so that it just clears the
Propeller tips when rotating the Propeller by hand. Check that each blade clears the object
by the same amount. If the Propeller is outside the approved tolerance, refer to JABIRU
Aircraft Pty Ltd or a JABIRU Approved Service Centre.
Maximum Tracking Error Tolerance is +/- 2mm.
8.
Locate Spinner on Spinner Flange and fix with Machine Screws through Tinnerman
Washers.
9.
Check Spinner for balance by locating a fixed object on a flat floor to just clear the lower
edge of the front dome of the Spinner. Rotate the propeller by hand and check that the
Spinner runs true.
10.
Correct any imbalance by loosening and retightening Machine Screws.
22.8 SERVICING AND REPAIRS
Any service or repair must take account of the risk of subsequent Propeller failure. Therefore
repairs are limited to the filling of small nicks in the Propeller. Maximum size of nicks approved
for repair is:
-
Those in Leading Edge: 4mm deep x 20mm long
-
Those across the drive Face (flat sides): 2mm deep x 6mm diameter or scratches not more
than 0.5mm deep.
Repairs must also take account of the changes to balance of the Propeller and therefore the
Propeller should be removed in accordance with the procedure described above. It must be
checked for balance (Section 22.9) prior to refitting (Section 22.7), checked for tracking after
reassembly (Section ) and the Spinner checked for balance after reassembly (see Paragraph
6.7).
Only nicks within the size tolerances described above may be repaired. All propellers with
cracks or splits (or any delamination of the composite sheath in the case of sheathed
Propellers) must be either Rejected as unserviceable or returned to JABIRU Aircraft Pty Ltd or
our local approved agent for assessment and possible repair.
