-
the diameter of the tube,

 -
the thickness of the wall. (Ref. Fig. 207/TASK 20-23-38-991-005)

 (b)
 Make sure that the deburring tool is clean. Lubricate it with COMMON GREASE (Material No. 04-012).

 (c)
 Prepare to deburr the tube:

 -hold the tube,
 -push in the plunger of the tool,
 -put the stem into the end of the tube
 -release the plunger to let the stem become expanded to seal the tube. (Ref. Fig. 207/TASK 20-23-38-991-005)

 (d)
 Deburr the tube:

 -continue to hold the tube
 -Apply light pressure on the cutter and at the same time turn the knurled body clockwise
 -continue to turn until the tube is deburred.

 (e)
 Do not push the plunger in, but:

 -carefully and slowly pull the deburring tool from the tube until you can see the first ridge of the stem
 -clean the end of the tube and the stem.

 (f)
 If the end of the tube is not correctly deburred:

 -push the tool into the tube,
 -repeat the step (d),
 -pull the tool out of the tube.

 (2)
 The external diameter

 Tool Assembly for Sleeve and Union
 Figure 211/TASK 20-23-38-991-022
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 (a) Remove the burrs on the external diameter of the tube with Grade 240 emery cloth.
 NOTE : Burrs on the external diameter of the tube can cause
____ damage to the seals in the fittings. This damage can cause external leakage. The surfaces must be clean and without damage:
 -the swaging area must have no deep scratches and must be clean (no dust, particles of metal etc.).
 -before you swage, clean the end of the tube with a clean cloth.

 (3) Clean the Tube

 WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL
_______ MATERIALS ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
 WARNING : USE A PROTECTIVE EYE SHIELD/GOGGLES WHEN YOU USE COMPRESSED
_______ AIR. DEBRIS AND/OR HIGH PRESSURE AIR CAN DAMAGE YOUR EYES.
 WARNING : USE THE CORRECT PERSONAL PROTECTION.
_______ COMPRESSED AIR WILL CAUSE LOOSE PARTICLES THAT CAN GET IN YOUR EYES. THE AIRSTREAM CAN CAUSE CUTS, DO NOT POINT IT AT YOUR SKIN.
 (a)
 (t) Carefully clean the tube with CLEANING AGENTS (Material No. 11-003).

 (b)
 Blow the air through the tube and remove all swarf and other foreign material.

 Subtask 20-23-38-930-051
 D. Make the Marks for Tube Insertion.
 NOTE : These marks give an indication of the depth of the tube in the
____
 fitting before and after swaging DLT5302-031-01.

 (1)
 Use a marking tool with the correct dimensions for the tube that you must swage: tubes of 1/2", 3/4" and 3/8".

 (2)
 Put the marking tool into position on the tube. The lip of the marking tool must be against the end of the tube. Make a mark on the tube with the marking pen D10058. (Ref. Fig. 212/TASK 20-23-38-991-007)

 NOTE : You can make the marks on the tube without the special tool.
____ But you must keep to the specified high and low limits for the insertion of the end of the tube. (Ref. Fig. 213/TASK 20-23-38-991-008)

 Tube Marking Tool
 Figure 212/TASK 20-23-38-991-007
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 Tube Marking Operation
 Figure 213/TASK 20-23-38-991-008
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 Subtask 20-23-38-420-051

 E. Installation of the Sleeve and the Union on the Tube
 WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL
_______ MATERIALS ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
 NOTE : Do not cause damage to the seals of the fittings:
　
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