TB 1-1615-351-23
(1) Removing the main rotor blades. If removed blades are e pected to be reinstalled on the same aircraft,
x
blades and grips should be marked so that blades can be reinstalled at the same location. This will greatly reduce track
and balance time.
(2) Remove main rotor blades per the applicable aircraft TM. Position blades on table or blade rack in close
proximity to each other. If blade racks are used place the blade with the railing edge down. If tables or saw horses are
used, lay the blades horizontally, bottom side up. Allow the tip cap to stick out over the edge of the rack or table.
NOTE
Any previously applied erosion protection system to the tip cap must be removed
before installing the TASK L-101 tip cap boot. Erosion tape may be removed by
manually peeling the tape off. Agcoat coating (black colored coating) may be
removed by brush applying MEK over the agcoat, allowing time for the agcoat to
soften, and manually scraping the blade surface. TASK L-100 coating (coffee
colored coating) may only be removed by manually scraping and peeling. Use of a
hard plastic scraper with a sharp edge (such as a windshield scraper) is
recommended for all blade scraping operations to preclude scratching or gouging
blade surfaces.
b. Layout and Mask.
(1) Lay out vacuum lines and manifolds near the blade tips per fgure 5-1 and assure yourself that you have
sufficient hose to reach each blade tip from the selected pump location.
(2) Lay out the application materials next to each blade tip and assure yourself that you have all applicable items
listed in tables 5-1 or 5-2.
(3) Put rubber gloves over hands to prevent direct contact between skin and kit chemicals. Use of gloves also
prevents skin oil from contaminating bonding surfaces.
(4) Wipe the tip cap area off with a clean cheesecloth. Remove local greasy s ots with denatured/isopropyl
p
alcohol.
(5) Trial fit the TASK-L101 boot onto the tip cap. With the boot placed on the tip cap, apply masking tape to the
blade tip cap approximately 1/4 inch from the edge of the boot per the applicable illustrations in figures 5-2 and 5-4.
Transfer the location of any drain holes to the boot. Punch out a corresponding drain hole in the boot if required. Seal off
all drain holes in and around the blade tip cap area with masking tape. Seal off with masking tape the tip cap seams that
will be under the vacuum bag, but not under the boot area, to prevent vacuum leaks. Seal off weight and balance access
areas with masking tape to prevent leaks and coating seepage in these areas. The only masking tape applied under the
boot should only be a 1/2 inch square piece of masking tape on the drain hole (s).
5-2
