CAB-30-02
Page 6 May 17, 2013
Caravan SERVICE BULLETIN
CAB-30-02
• Ethyl alcohol.
(7) Always use P840218 Ta pe or equivalent low-residue masking mat erial 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 t he specified ny lon tubing, c oupling bodies, olives, rubber sealing rings , and
nuts i n accord anc e with these in struc tions to make compressi on fitting c onnections.
(b) In a warm water (temp eratu re of the water is not to be more than 140 degrees) and
detergent solution , c lean all tu bing a nd fittings c ompletely and then dr y t hem wit h cle an
air b efore you as semble t he lines.
(c) Use only the spec ified clenching tool s in ac c ordance with t hes e instructions to make
compres sion fitting c onnections.
(d) When you assemble t he line, put t he correctly si z ed nut on the tu bing in the correct
position. (Refer to the Model 208 Maintenance M anual, Chapter 30, TKS Anti-Ice Fluid
Distribution System - M aintenance Pract ices , Figure 204.)
(e) Put the olive on the tubing wi th the bev el end of the olive toward t he end of t he tubing.
(Refer to the Model 208 Mainte nanc e Manual, Chapter 30, TKS A nti -Ice Fluid Distribution
System - Maintenanc e Practices, Figure 204.)
CAUTION: Do not us e the coupling nut t o clench the olive t o the fluid tubing. Use
only spec ified clenching too ls to do the clenching operation. Also, do
not torque t he couplings t oo muc h during the rep air or replacement
procedure. If t he couplings leak, in stall new seals as neces sa ry.
CAUTION: Clench the olive to the tubing without a s ealin g ring in position. If yo u
clench t he olive w ith a sealing ring in position, you will prevent a
correct clench and the sealing ring will be uns erv iceable.
(f) Put the end of t he nylon t ubing into th e correc t ly-s ized clenching tool as far as it will go.
(g) Make s ure that t he outer end of t he olive is in the correc t pos ition in the bore of the nut.
(h) Torque the nut onto the clenching tool in accordan ce with the torque values in the
Model 208 Maintenance Manual, Chapter 30, TKS Anti-Ice Flui d Distribution System -
Maintenance P rac tices.
1
Make sure that the nylon tubing stays bottomed out in the clenching tool until the
clenching operation is com plet ed.
2
Make sure tha t the m andrel is fully engaged in the tool.
NOTE: Clenching tools for 3/16-inch and 5/16-inch outside diameter t ubing have
mandrels to hold the inside of the tubing.
3
The tubin g, olive, and m andrel c an turn during the c lenching operation, and that
is permitted.
(i) Unscrew the nut and remove the olive and the tubing from t he clenchi ng 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 s w aged.
CAUTION: Do not use the seals again af ter y ou loosen or disconnect a t ube
coupling. Replace the 3/ 16-inch and 5/16-inch sealing ring an d/or
1/2-inch O-ring, as applicable, when you assemble a tube coupling .
Examine the seal f or dam age and m ak e sure that it is in t he correct
position. This wi ll help to prevent flu id leakage fr om the c oupling.
(k) Put a s ealing ring of the corre ct dimension over the end of t he tubing.
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