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Initial / 180 day Inspection

Perform this inspection on initial issue, and every 180 days thereafter.

Inspect / Leak Test Tri-Sar Surface Harness

NOTE

Perform this inspection every 180 days.

NOTE

The following procedures shall be performed in an inflatables maintenance area that is clean, climate controlled area between 70 - 78 degrees F (21 - 25.5 degrees C)

Tools / Test Equipment:

Air Pressure Gauge - 0-5 PSI

Torque Screwdriver (capable of measuring 25 inch-pounds)

Vacuum Generator

Expendables:

Cylinder Seat Gasket 1/2-inch, P/N 484-S (Lifesaving Systems Corp.) (qty. 1)

Emery Cloth (as required)

Gasket Set, CO2 Inflator, P/N 479 (Lifesaving Systems Corp.) (qty. 1)

Inflator Assembly, P/N 487-1-3 (Lifesaving Systems Corp.) (qty. 1)

Re-Arming Pin - Green - Semicircle

Consumables:

Corrosion Preventive, Fluid Film (MSDS)

Isopropyl Alcohol, TT-I-735 (Series), USP (70%),

Leak Test Compound

Inspection Procedures

CAUTION

Scrap the harness if the webbing is cut, excessively worn, or has more than three consecutive loose or broken stitches.

Step 1: Inspect the harness webbing for cuts, excessive wear, loose or broken stitches, and damaged hook and pile tape.

NOTE

Yellow thread is used to repair damaged stitches to help the inspector easily identify areas that have been repaired before. If unit has no sewing capability, take harness out of service and send to Lifesaving Systems or an Authorized Repair Center for repairs.

  1. If three or fewer consecutive loose or broken stitches are found in a load-bearing stitch pattern, repair the damaged area by over-stitching 2.5 inches along the original stitch line with yellow size 3 nylon thread, V-T-295, six to eight stitches per inch.
  2. Reattach or replace damaged hook and pile tape by over-stitching along the original seam line with non-contrasting size E nylon thread, V-T-295, six to eight stitches per inch.

*QA REQUIRED - QA1

WARNING

Avoid eye and skin contact with corrosion preventive, fluid film. Avoid inhalation or ingestion. Use in a well-ventilated area. Wash thoroughly with soap and water after handling or exposure. Remove contaminated clothing immediately.

CAUTION

Scrap the harness if any of the hardware is cracked, distorted, excessively worn, or if the bayonet fittings do not operate correctly.

Step 2: Inspect the harness hardware for security of attachment, cracks, distortion, and excessive wear. Remove any corrosion, sharp edges, or burrs with emery cloth. Lubricate the Talon II hook with Corrosion Preventive, Fluid Film.

  1. Ensure that the bayonet fittings lock (chest and leg) into the buckles and do not release until both buckle releases are pressed simultaneously. Lubricate the bayonet fittings and buckles with Corrosion Preventive, Fluid Film.
  2. Torque the flotation bladder casing attachment screws 20 to 25 inch-pounds.

Step 3: Inspect the equipment pockets for cuts, tears, and excessive wear. If required, repair damaged pockets by hand stitching the damaged area with a curved needle using non-contrasting size E nylon thread, V-T-295.

Step 4: Screen the flotation bladder and casing for damage as follows:

NOTE

The flotation bladder and casing are not repairable. If there is a reasonable expectation that the bladder will fail the leak test, replace it with a new flotation bladder, P/N 487-VB, and perform this inspection procedure again.

  1. Remove the CO2 cylinder.
  2. Inflate the flotation bladder through the oral inflation tube to one PSIG.
  3. Inspect the flotation bladder casing for cuts, tears, and excessive wear.
  4. Inspect the reflective tape for security.
  5. Inspect the oral inflation tube for damage, security, and ease of operation of the valve.

Step 5: Inspect the CO2 inflation assembly as follows:

CAUTION

If the CO2 inflation valve is removed or replaced, a new gasket set should be installed.

NOTE

Repair or replace damaged CO2 inflation valves and lanyards.

  1. Inspect the CO2 inflation valve for damaged threads and corrosion.
  2. Operate the lever several times. Make sure that the lever moves freely and that the puncturing pin moves properly inside the valve body.
  3. Remove the old cylinder gasket from the inflation valve assembly and replace it with a new cylinder gasket, P/N 484-S.
  4. Inspect the pull toggle and lanyard for damage.

B: Leak Test

NOTE

Remove any installed survival items from the equipment pockets before inflating the flotation bladder so that they are accessible for inspection without disturbing the vest during the leak test.

Step 1: Remove all of the survival items from the equipment pockets.

Step 2: Lay bladder on fl at surface and unsnap folded bladder to the open position.

CAUTION

Do not over inflate. Inflate the flotation bladder with low-pressure air regulated to 10 PSIG maximum. Compressed air must have in-line air dryer and filter.

Step 3: Inflate the flotation bladder through the oral inflation tube to 2 PSIG.

Step 4: Wait 15 minutes for the air pressure in the flotation bladder to stabilize.

WARNING

Avoid eye or prolonged skin contact with leak test compound, MIL-PRF-25567 (series) or P/N 639. Avoid breathing vapors. Use in well-ventilated area. Wash thoroughly after use.

During the 15-minute waiting period, apply Leak Test Compound, MIL-PRF-25567 (Series), to the oral inflation tube and CO2 inflation valve. Watch for signs of leakage.

  1. If the oral inflation tube leaks, replace the flotation bladder with a new flotation bladder, P/N 487-VB, and perform this inspection again.

  2. If the CO2 inflation valve leaks, remove the inflation assembly, tighten Schrader valve stem, re-install assembly and retest. If leakage continues at valve stem, replace it with a new flotation bladder, P/N 487-VB, and perform this inspection again.

Step 5: After the 15-minute waiting period, readjust the air pressure in the flotation bladder to 2 PSIG. Record the temperature, time, and air pressure in the “BEGIN TEST” block of the test chart. Close the oral inflation tube valve lock and allow the flotation bladder to remain undisturbed for 2 hours.

Step 6: Measure the air pressure in the flotation bladder 2 hours after beginning the leak test. Record the temperature, time, and air pressure in the “END TEST” block of the test chart. Calculate the corrected air pressure. The corrected air pressure shall be 1.8 PSIG or higher.

*QA REQUIRED - QA2

  1. If the flotation bladder fails the leak test, perform a second test. If the bladder fails the second test, replace it with a new flotation bladder, P/N 487-VB, and perform this inspection again.

Step 7: Deflate the flotation bladder through the oral inflation tube using a vacuum generator.

Step 8: Close the oral inflation tube valve lock.

Step 9: Close bladder by folding ends in so snaps match, and snap closed.

Step 10: Weigh the CO2 cylinder and compare the weight stamped on the cylinder with the scale weight. Replace the cylinder if the scale weight is more than 2 grams under the stamped weight.

CAUTION

The steel threads of the CO2 cylinder can damage the aluminum threads of the inflation valve. Carefully screw the cylinder into the valve. Replace the cylinder if binding occurs.

WARNING

Avoid eye and skin contact with corrosion preventive, fluid film. Avoid inhalation or ingestion. Use in a well-ventilated area. Wash thoroughly with soap and water after handling or exposure. Remove contaminated clothing immediately.

Step 11: Apply a light coat of Corrosion Preventive, Fluid Film, to the threads of the CO2 cylinder.

Step 12: Screw the CO2 cylinder into the inflation assembly until it is fully seated, plus 1/4 turn.

*QA REQUIRED - QA3

Step 13: Replace the green Rearming Pin in the inflation assembly body

Step 14: Stow survival items in the equipment pockets in accordance with local policies.

Step 15: Record maintenance action by completing appropriate sign-off, adding pertinent remarks.