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: 157 of 233
13
Engine & Engine Installation
13.1 ENGINE COWLS
13.1.1 DESCRIPTION
The engine cowls comprise both an Upper and Lower composite structure.
The Upper Cowl is fitted with locating Cam Locks at the front & rear of the cowlings. Hinges run
along the join lines on either side, holding the top & bottom together. The Lower Cowl is attached to
the Fuselage with machine screws mounting into anchor nuts.
Due to space constraints not all different variations are shown herein. When ordering spare parts
provide as must detail as possible
– part description, aircraft model, serial number etc to Jabiru to
ensure accurate part identification.
13.1.2 UPPER COWL REMOVAL
1.
Remove the Cam Locks from the front & rear of the cowling.
2.
Remove Hinge Pin.
3.
Grasping the cowl around the front nose, pull carefully upwards.
4.
Remove the cowl.
5.
Replace the cam locks in the cowling to ensure they are not misplaced.
NOTE: Always ensure that the cowl is placed in a position where it cannot be damaged by
persons walking around the aircraft or by wind.
6.
Reverse the preceding steps for installation.
WARNING
Ensure the cam locks are properly engaged before starting the engine.
13.1.3 LOWER COWL REMOVAL
1.
Remove the top cowl
– Refer above.
2.
Disconnect the engine air inlet SCAT hose and cabin heat inlet hose (if fitted)
3.
Remove lower cowl screws at rear of cowl.
4.
Reverse the preceding steps for installation.
13.1.4 CLEANING AND INSPECTION
1.
Wipe the inner surfaces of the cowlings with a cloth saturated with Mineral Turpentine.
2.
Wash with a solution of mild soap and water and rinse thoroughly. After cleaning, inspect for
dents, burns, rubbing marks, cracks and any signs of delamination.
3.
Inspect cowling camloc mounts for rigidity & bonding & for wear. Inspect locking pins for damage.
Inspect rubber grommets in firewall for wear or damage.
4.
Replace any damaged or worn parts with new parts.
13.1.5 REPAIR
Repair is limited to replacement cam locks. Rivets fixing cam lock anchor lugs should be backed with
washers.
