CAB-30-02
Page 6
May 17, 2013
Caravan
SERVICE BULLETIN
CAB-30-02
•
Ethyl alcohol.
(7)
Always use P840218 Tape or equivalent low-residue masking material to protect the porous
panels from unapproved materials.
(8)
(Refer to Figure 2.) Use these instructions to make tubing to connect to the test cart:
(a)
Use only the specified nylon tubing, coupling bodies, olives, rubber sealing rings, and
nuts in accordance with these instructions to make compression fitting connections.
(b)
In a warm water (temperature of the water is not to be more than 140 degrees) and
detergent solution, clean all tubing and fittings completely and then dry them with clean
air before you assemble the lines.
(c)
Use only the specified clenching tools in accordance with these instructions to make
compression fitting connections.
(d)
When you assemble the line, put the correctly sized nut on the tubing in the correct
position. (Refer to the Model 208 Maintenance Manual, Chapter 30, TKS Anti-Ice Fluid
Distribution System - Maintenance Practices, Figure 204.)
(e)
Put the olive on the tubing with the bevel end of the olive toward the end of the tubing.
(Refer to the Model 208 Maintenance Manual, Chapter 30, TKS Anti-Ice Fluid Distribution
System - Maintenance Practices, Figure 204.)
CAUTION:
Do not use the coupling nut to clench the olive to the fluid tubing. Use
only specified clenching tools to do the clenching operation. Also, do
not torque the couplings too much during the repair or replacement
procedure. If the couplings leak, install new seals as necessary.
CAUTION:
Clench the olive to the tubing without a sealing ring in position. If you
clench the olive with a sealing ring in position, you will prevent a
correct clench and the sealing ring will be unserviceable.
(f)
Put the end of the nylon tubing into the correctly-sized clenching tool as far as it will go.
(g)
Make sure that the outer end of the olive is in the correct position in the bore of the nut.
(h)
Torque the nut onto the clenching tool in accordance with the torque values in the
Model 208 Maintenance Manual, Chapter 30, TKS Anti-Ice Fluid Distribution System -
Maintenance Practices.
1
Make sure that the nylon tubing stays bottomed out in the clenching tool until the
clenching operation is completed.
2
Make sure that the mandrel is fully engaged in the tool.
NOTE: Clenching tools for 3/16-inch and 5/16-inch outside diameter tubing have
mandrels to hold the inside of the tubing.
3
The tubing, olive, and mandrel can turn during the clenching operation, and that
is permitted.
(i)
Unscrew the nut and remove the olive and the tubing from the clenching tool.
NOTE: It may be necessary to remove the mandrel from the clenching tool to remove
the tubing.
(j)
Do an inspection of the installed olive to see that it is correctly swaged.
CAUTION:
Do not use the seals again after you loosen or disconnect a tube
coupling. Replace the 3/16-inch and 5/16-inch sealing ring and/or
1/2-inch O-ring, as applicable, when you assemble a tube coupling.
Examine the seal for damage and make sure that it is in the correct
position. This will help to prevent fluid leakage from the coupling.
(k)
Put a sealing ring of the correct dimension over the end of the tubing.
Summary of Contents for Cessna 208B
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