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: 191 of 233
15
INSTRUMENTS & INSTRUMENT SYSTEMS
15.1 GENERAL
This Section describes the typical instrument installation and its operating system. Emphasis is
placed on trouble shooting and corrective measures only. It does NOT deal with specific instrument
repairs as this usually requires special equipment and data and should be handled by instrument
specialists. Malfunctioning instruments should be either returned to JABIRU AIRCRAFT Pty Ltd or
sent to an approved instrument overhaul and repair station for servicing.
Our concern here is with preventive maintenance on the various instrument systems and correction
of system faults which will result in instrument malfunctions. The descriptive material, maintenance
and troubleshooting information in this Section is intended to help the owner or mechanic determine
malfunctions and correct them, up to the defective instrument itself, at which point an instrument
technician should be called in.
Some instruments, such as Oil Temperature and Pressure Gauges, are simple and relatively
inexpensive and repairs will usually cost more than a new instrument. Flight instruments, on the
other hand, are usually well worth repairing. The words “replace instrument” in the text, therefore,
should be taken only in the sense of physical replacement in the aircraft. Whether replacement is to
be with a new instrument, an exchange one, or an original instrument is to be repaired must be
decided on the basis of the individual circumstances.
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.
15.2 INSTRUMENT PANEL
15.2.1 DESCRIPTION
The instrument panel consists of a fascia panel which attaches to the panel mount and contains all
the instruments. The fascia may be made from aluminium or composite materials.
15.2.2 INSTRUMENT PANEL REMOVAL & INSTALLATION
To remove the fascia:
-
Remove the screws holding the fascia to the fibreglass panel mount.
-
Carefully draw the fascia aft. Normally there is sufficient slack in the electrical loom and
instrument lines for the fascia to move aft by around 100mm. Cushions or similar must be used to
support the fascia
– talking care not to scratch the face or damage any instruments. This position
is usually the best to carry out any necessary maintenance, adjustment or repairs to instruments
etc.
-
Disconnect the panel. Ensure that all wires and lines etc are clearly marked to aid re-assembly.
Note that air lines tend to be a tight fit and a heat gun or similar may be necessary to soften the
lines to allow removal.
-
Remove the fascia.
-
Assembly is the reverse of the above procedure.
WARNING
When removing fascia it is common for some wires connecting to switches on the bottom of
the panel to be dislodged. Ensure all wires are securely re-connected before fitting fascia.
Take care not to strain, bend or damage any wires or lines.
While working within the instrument panel ensure that the starter motor system or main
battery is disconnected so that the motor cannot be started accidentally via a short or similar.
