MSA AirFrame 10046846, Maintenance And Repair

Page: 3 / 4

HARNESS REPAIR
CARRIER AND HARNESS REPAIR
(TRI-BAR AND SLOT DESIGN)
Removing the Shoulder Straps from Carrier
1. Right shoulder strap
a. Using an open-end wrench, disconnect the redun-
dant alarm with harness gauge hose from the first
stage regulator.
b. Unthread and remove from shoulder strap.
c. Unthread the free end of the pull-strap (waist) from
the shoulder strap friction buckle.
d. Remove the shoulder
strap from the carrier
by rotating the tri-bar
until it slides through
the carrier slot.
2. Left shoulder strap
a. Disconnect the second stage regulator intermediate
pressure hose from first stage regulator using an
open end wrench.
b. Unthread the second stage intermediate pressure
hose from the shoulder strap.
c. Unthread the free end of the pull-strap (waist) from
the friction buckle of the shoulder strap.
d. Remove the shoulder
strap from the carrier
by rotating the tri-bar
until it slides through
the carrier slot.
INSTALLING THE CHEST STRAP
Removing the Pull-Strap (Waist) Belt Assembly from
Carrier
1. Both left and right straps
a. Unthread the free end of the pull-strap (waist) from
the shoulder strap friction buckle.
b. Remove the pull-strap (waist) from the carrier by
rotating the tri-bar until it slides through the carrier
slot.
Connecting the Shoulder Straps Together
1. Right shoulder strap
a. Attach the shoulder strap to the carrier by rotating
the tri-bar until it is aligned with carrier slot.
b. Pull on shoulder strap to ensure tribar is secure.
c. Thread the free end of the pull-strap (waist) through
the shoulder strap friction buckle.
d. Slide the harness gauge hose with redundant alarm
through the entire shoulder strap tunnel.
e. Remove the gauge hose o-ring. See the Regulator
Repair section of this binder.
f. Install a new gauge hose o-ring with a thin film of
Christo-Lube lubricant. See the Regulator Repair
section of this binder.
g. Connect the gauge hose to the first stage regulator.
See the Regulator Repair section of this binder.
h. Leak test all connections. See the Leak Test section
of this binder.
2. Left shoulder strap
a. Attach the shoulder strap to the carrier by rotating
the tri-bar until it is aligned with carrier slot.
b. Pull on the shoulder strap to ensure that the tri-bar
is secure.
c. Thread the free end of the pull-strap (waist) through
the shoulder strap friction buckle.
d. Slide the second stage pressure hose with redun-
dant alarm through the entire shoulder strap tunnel.
e. Replace the second stage pressure hose o-ring with
a new o-ring with a thin film of Christo-Lube lubri-
cant. See the Regulator Repair section of this
binder.
f. Connect the second stage pressure hose to the first
stage regulator. See the Regulator Repair section of
this binder.
g. Leak test all connections. See the Leak Test section
of this binder.
Reassembling the Pull-Strap (Waist)
1. Rotate the tri-bar strap until it is aligned with the carri-
er slot.
2. Slide the tri-bar through the carrier slot.
3. Pull on the strap to ensure that the tri-bar is secure.
4. Thread the pull-strap free end through the back of the
friction buckle, over the top of the slide bar, and under
the front of the curved buckle.
Reassembling Double Pull-Strap (Waist)
1. Thread the strap-free end through the back of the fric-
tion buckle, over the top of the slide bar, and under
the front of the curved buckle.
Reassembling Single Pull-Strap (Waist)
1. Rotate the strap tri-bar until it is aligned with carrier
slot.
2. Slide the tri-bar through the carrier slot.
3 TAL 805 (L) Rev. 0 - 10095091