TB 1-1615-351-23
(4) Remove the old masking tape and replace with new as required to repair tape damaged by sanding. Mark
coating application spanwise dimensions on the tape before starting to apply the coating. Make sure all screw heads are
covered with masking tape. Screw heads must not be coated.
f. Mixing Coating (Step 4).
(1) The coating consists of individual foil packets, each of which contain Part A of the two-pan coating (in a pull-
top can which is about half-filled), Part B (in a syringe with a tip cap) and a stir stick to mix them. Parts A and B are pre-
measured to assure proper cure.
WARNING
The coating will not wash off and can be irritating to the skin. Wear gloves and
safety goggles when mixing and applying this product.
(2) To mix the coating, open Part A. Remove the tip cap from Part B and squirt the full contents into the can
containing Part A. Stir the mixture for a full 60 seconds using the stick provided, being careful to scrape the sides of the
can with the stick occasionally to assure total mixing of both parts. You have only 5-10 minutes to get the coating out of
the can, so don't start mixing until you have read the instructions in step g and h, below, and are ready to start the
application. The coating cures faster in the can than it does on the blade.
g. Coating Application - Main Rotor (Steps 5A).
(1) Starting at the outboard tip, coat the leading edge of the main rotor blades using the dimensions and
quantities in the applicable tables and illustrations for each individual aircraft in Chapter 2. In the event that a blade
erosion tape kit is already installed on the main rotors, it is allowable to apply TASK-L100 around the blade erosion tape
areas. However, application of TASK-L100 should be maintained within the dimensional limits of the illustrations for each
individual aircraft in Chapter 2. If main rotor blade erosion occurs adjacent to blade erosion tape, application of two
TASK-L100 coats, two inches wide, and adjacent to main rotor blade erosion tape is allowable outside the dimensional
limits of the illustrations in Chapter 2. Paint all blades identical. Apply all of the coating from the can onto the blade as
quickly as possible, then work it with the brush to obtain a smooth, even coat. Pouring the material from the can while
spreading with a brush is an acceptable practice to apply the coating quickly. Keep watching the freshly applied material
for runs and sags. Rebrush, as required, until the coating begins to set.
(2) Use a new paintbrush when the old brush starts to drag. It should take a new brush every two to three cans
to do the job properly.
NOTE
It is normal for some of the hairs from the brush to come off the brush and remain
in the coating.
(3) If the blades are on the aircraft, coating the bottom will take a different technique. As you coat the bottom you
must keep working the material until it starts to set. Long, smooth spanwise strokes with the brush being pulled at a low
angle to the blade works best.
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