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Aircraft Technical Manual
Jabiru Aircraft
Pty Ltd
J120, J160, J170, J200/J400, J230/J430, J250/J450 Variants
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ISSUE
1
2
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5
Dated: 29th October 2014
Issued By: AS
Page: 199 of 298
7.3
Flexible Hoses
7.3.1 Description
Flexible “rubber” hoses are used within the engine bay to carry fuel and oil. Vent lines for the engine
and carburettor are also flexible lines.
7.3.2 Flexible Hose Removal
Required Tools:
Side cutters or similar
Screwdrivers
Stanley knife / scalpel blade
Parts and Material:
N/A
Type of Maintenance:
Line 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)
Where equipped, cut the safety wire to allow the fire sleeve to be drawn back along the hose to allow
access to the hose clamp.
Loosen the hose clamp.
Remove the hose from the hose fitting.
Note that oil cooler lines, by design, often become bonded or “stuck” to the hose barb. This makes it
impossible, in most cases, to remove these hoses without cutting them.
7.3.3 Inspection
Required Tools:
Screwdrivers
Parts and Material:
Replacement hoses (if required)
Lockwire
Type of Maintenance:
Line 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)
Examine the exterior of hoses for evidence of leakage or wetness.
Feel hoses to assess the hardness of the hose. Excessively hard hoses must be replaced as
they are likely to be subject to cracking.
Replace any doubtful hoses.
7.3.4 Flexible Hose Installation
Hoses should not be twisted on installation.
Provide as large a bend radius as possible.
Hoses should have a minimum of 12mm clearance from other hoses or surrounding objects or be
tie-clamped to them.
Where fire-sleeve is used ensure it is fitted per Figure 145.
NOTE: Rubber hoses will take a permanent set during extended use in service. Straightening a
hose with a bend having a permanent set will result in hose cracking. Care should be taken
during removal so that hose is not bent excessively, and during reinstallation to assure hose is
returned to its original position. Excessively hard hoses must be discarded.