GENERAL MAINTENANCE PROCEDURES CONT.

TM 10-1670-299-20&P TO 14D1-2-470-2 NAVAIR 13-1-41 (6) If the fabric area around the original grommet has been damaged, repair the area by darning, using the procedures in a. above and the stitching specified in Table 2-3. However, if darning does not provide and adequate repair, construct a suitable sized reinforcement of the same type material as that used in the original grommet location. Secure the reinforcement to the inside of the damaged area using the patching procedures in a. above and the stitching specified in Table 2-3. (7) Using a single or double bow cutter that is compatible with the size of the replacement grommet, a lead cutter block, and a rawhide mallet or other non-steel impact device, cut a hole in the repaired fabric area to accommodate the barrel of the replacement grommet. Insure the hole is cut with a slightly smaller diameter than the diameter of the barrel of the replacement grommet. (8) Install a plain or spur grommet by the hand-held method which requires the use of a suitable sized punch and die, and a rawhide mallet or other non-steel impact device. A flat grommet should also be installed using the hand- held method, but may be installed using a hand- or foot-operated press and a suitable size chuck and die. CAUTION Tools used to install a grommet will be compatible with the size and type of grommet. (9) Insert the barrel of the replacement grommet through the accommodating hole in the material and insure the grommet flange is located on the same side of the material as the original grommet. (10) Position the grommet on a suitable sized die with the barrel facing up and place the applicable washer over the grommet barrel. 2-39