TM-5-3805-254-14-P-2
TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)
TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT AND DEPT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS INFORMATION AND SUPPLEMENTAL MAINTENANCE INSTRUCTIONS)
JUNE 1980
TM-5-3805-254-14-P-2 - Page 169 of 894
TRUCK SERVICE MANUAL
on the tubing and prevents collapsing the tubing when
the nut is tightened.
The parts listing notes that there are
some sizes of tubing that are used only in accessory
piping systems in repairing accessory piping systems
tube supports are needed with all sizes of tubing except
1/8" O.D.
if compression-type fittings are used.
Once the tubing has been connected and tightened
the sleeve has been crimped on the tubing and insert.
Since the sleeve has been compressed and distortion of
the insert may have resulted, the sleeve and inserts
should never be used the second time.
To assemble tubing ends for use with compression-
type fittings, the following steps should be followed
carefully.
1. Loosen and remove nut from fitting.
2. Pull tubing from fitting.
3. Repeat the same operations at other end of
tubing.
If only one end of line needs repairing,
second end need not be disconnected if line is
long enough to permit repairing.
4. Cut the selected size of tubing to length.
Be
sure to make smooth, square cuts.
Either a
sharp knife or hack saw may be used.
5. Position nut on tube.
6. Position compression sleeve on tube.
*7. Insert tube support into tube.
*8. Position the tube, support and sleeve in the
fitting.
Push tube in fitting until it bottoms.
9. Then install and tighten tube nut to secure
sleeve on tubing.
10. Inspect tubing connections for air leakage.
With
the tubing. and associated fittings charged to full
system air pressure coat tubing lines and fittings
with soap suds to check for leakage.
No
leakage is permissible.
Leakage at a tubing
fitting is sometimes corrected by tightening the
tubing fitting nut.
If this fails to correct the
leakage, replace the tubing fitting, tubing, or
both.
* No tube support is used with 1/8" O.D.
tubing.
Certain
fittings used in accessory piping systems have the tube
support as an integral part of the fitting body.
These
fittings may be reused if no distortion of the tube support
has occurred.
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