OSBORNE Flush Aileron Balance Weight
kit. This replaces
the factory external weights.
|
Description
|
Probable Cause
|
Correction
|
|
Weight screw
will not start
|
Aileron pre-drilled skin
hole not lining up |
Tap out with
10-32 taping bit |
|
Flush filler
does not
harden
|
Not mixed properly or
needed more hardener
added
|
Remove filler
and re-apply |
|
Brief Description: OSBORNE Tip Tank
kit consist of fuel lines routed from the Tip Tanks to a
“cross feed” valve, then forward to the OSBORNE valve
selector valve.
This valve is four position Left hand Tip Tank,
Right hand Tip Tank, main tank and off.
|
|
Description
|
Probable Cause
|
Correction
|
|
Valve is hard to
turn |
Worn out/dry
|
Grease seat and
replace shaft seal
|
|
Fuel stain at
selector shaft
|
Worn out/dry |
Grease seat and
replace shaft seal
|
|
Handle is loose
after installation of
new
clevis pin |
Worn out handle and or
selector valve shaft |
Replace
handle/valve assembly
|
|
Fuel bypassing
valve
|
|
Replace Valve
|
|
Valve handle is
attached to selector shaft with a
assembly
screw on type (handle)
|
Non approved valve |
Replace
with approved part
|
|
Valve turns with
no feel or tank position detenting
|
Wrong selector valve
body or worn out detent assembly |
Replace with
approved part assembly
|
|
OSBORNE Cross Feed Valve P/N 55028
Kit applications: Navion Kit P/N
11982 (TT2-1)
This valve is used in level fight
when Tip Tank is selected to achieve “cross feed” of
both (LH and RH) Tip Tanks usage.
|
|
Description
|
Probable Cause
|
Correction
|
|
One Tip Tank feeds faster
|
1. Weak cross feed valve
2.Plugged Tip Tank vent
line
|
Replace valve Clear slow feeding
Tip Tank vent line
|
|
No cross feed occurring when cross feed switch is
selected “open”
|
1. No power to valve
2. Valve is not engaging
|
Check power source to valve
Bad coil
replace valve
|
|
Tip Tank fuel is bypassing (siphoning)
to opposite
Tip Tank; in static condition. “Not in flight”
|
Seal in valve is worn out |
Replace valve
|
|
OSBORNE fuel gauge P/N 55027
Fuel gauge (single) with selector
switch.
|
|
Description
|
Probable Cause
|
Correction
|
|
Reads empty at all times with
fuel in Tip Tanks
|
1. Fuel transmitter between Tip Tank and selector
switch/gauge is grounded
2. Faulty fuel transmitters
3. No power to gauge
|
Check fuel transmitter wire
for continuity,
check power
source
|
|
Reads full at all times with
less than full Tip Tanks
|
Open fuel transmitter circuit.
|
Check fuel transmitter wire
for continuity.
Check for loose wire connection
|
|
Fuel
Transmitter: See P/N 55025
|
