Kirby Morgan Dive Systems, Inc.
®
1430 Jason Way Santa Maria, California 93455
Phone: 805/928-7772 Fax: 805/928-0342
www.KirbyMorgan.com email: [email protected]
© ⅯⅯⅩⅢ Kirby Morgan Dive Systems, Inc. All rights reserved.
Document # 130611006
KI
RBY
MORGA
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Threaded Inserts:
The stainless steel, female threaded, inserts that are bonded into the frame or shell of the mask/
helmet. These inserts receive the port retainer mounting screws. The port retainer mounting screws hold the port
retainer in place. The port retainer holds the face port in place on the mask/helmet frame or shell.
-Port Retainer Insert Testing-
Tools Required:
Adjustable Torque Screwdriver
Insert Test Block, Screw & Washer
Test Procedure:
1. Remove the port retainer, face port and O-ring according to the instructions in the mask/helmet manual.
2. Place the insert testing block over one of the threaded inserts and thread the testing block screw through the
washer and hole in the block and into the insert, tightening it hand tight (Fig. B).
3. Prepare to listen and observe the surrounding area as you tighten. Using the Adjustable torque screwdriver,
slowly tighten the test block screw to 14 inch pounds. While tightening, observe the insert and surround
-
ing area. The insert should not move at all and there should not be any cracks in the surrounding fiberglass/
plastic. Also listen for cracking sounds as you tighten the screw. Any such sounds are an indication that the
fiberglass surrounding the insert has been stressed, damaged and should be repaired. KMB 28 frames would
require replacement.
4. With the screw tightened, check for cracks around the insert and/or edges of the face port area ( Fig. B). If
any are found, the area must be repaired, as this is a sign that the insert has been over tightened and has
damaged the fiberglass.
5. If, after checking all the inserts, they all pass the 14 inch pound test,
replace the O-ring, face port, and port retainer according to the manual
instructions and tighten all port retainer screws to
12 INCH POUNDS
with the adjustable
torque screwdriver.
6.
Fig. A is an il
-
lustration of the test
-
ing block, screw and
washer. The block is
machined from alumi
-
num stock.
Fig. B
Fig. B
Check for cracks around the out-
side of the face port area around
the inserts.
Insert Testing Block
Fig. A
P/N 530-045
Whisker Screw
P/N 430-075
Washer
Side View
P/N 550-115
Bottom View
P/N 550-115
