MWO-9-2320-280-35-2
MODIFICATION WORK ORDER
MODIFICATION OF THE HIGH-MOBILITY MULTIPURPOSE WHEELED VEHICLE; M998 SERIES; 3-POINT SEATBELT RESTRAINT SYSTEM FOR BASIC ARMORED AND NON-ARMORED VEHICLES
OCTOBER 2005
CHANGE 2
MWO-9-2320-280-35-2 - Page 23 of 116
MWO 9-2320-280-35-2
18
Change 2
d. RIGHT WHEELHOUSE REINFORCEMENT INSTALLATION.
(1) Remove two screws, four washers, and two nuts from right wheelhousing as shown in
figure 35.
(2) Enlarge two holes on right wheelhousing to 0.500-inch diameter as shown in figure 35.
(3) Position 12342736 template to underside of right wheelhousing and secure with two screws
(441426) and nuts (214442) retained from para. c., step (3) as shown in figure 40.
(4) Position 12342376 wheelhouse reinforcement to template on underside of right wheelhousing.
Using wheelhouse reinforcement as a template, locate, mark, and drill six 0.191-inch diameter holes as
shown in figure 40.
(5) Remove two screws, nuts, and template from right wheelhousing as shown in figure 40. Retain
screws and nuts for later use.
(6) Use a 0.328-inch diameter drill to coutersink hole marked “A” on right wheelhousing as shown in
figure 41.
(7) Position wheelhouse reinforcement to underside of right wheelhousing and secure with five
M7885/2-6-3 rivets and NAS9303B-6-3 rivet as shown in figures 40 and 41.
e. RIGHT WHEELHOUSE RETRACTOR MOUNT INSTALLATION.
(1) Position 12342728 template to right wheelhousing and secure with existing two screws (441426)
and nuts (214442) retained from para. d., step (5) as shown in figure 38.
(2) Using template, locate and drill three 0.125-inch diameter holes in right wheelhousing as shown
in figure 38.
(3) Remove two screws, nuts, and template from right wheelhousing as shown in figure 38.
(4) Enlarge holes drilled in step (2) to 0.500-inch diameter as shown in figure 38.
(5) Install existing screw and two washers removed in para. d., step (1) and 9422300 nut in hole on
right wheelhousing as shown in figure 39.
(6) Install 12342374 rear retractor mounting bracket to right wheelhousing and secure with two
454974 screws, 453719 screws, eight 2436164 washers, and four 9422300 nuts as shown in figure 39.
Tighten nuts to 35-40 lb-ft (48-54 N
•
m).
(7) Position 549220 turnbutton to rear retractor mounting bracket on right wheelhousing and secure
with two M24243/1-A405 rivets as shown in figure 39.
f. LEFT AND RIGHT SEATBELT ASSEMBLY INSTALLATION.
(1) Position retractor (part of seatbelt assembly 12480530) to rear retractor mounting bracket on left
wheelhousing and secure with 453124 screw, two 2436164 washers, and 9422300 nut as shown in figure
42. Tighten nut to 35-40 lb-ft (48-54 N
•
m).
(2) Position 12341856 washer, "D" ring (part of seatbelt assembly 12480530, 2436164 washer, and
12340259-5 bolt to left rear retractor mounting bracket. Secure bolt with 2436164 washer and 9422300
nut as shown in figure 42. Tighten nut to 35-40 lb-ft (48-54 N
•
m).
NOTE
Ensure that release button on the buckle is positioned toward
the tunnel.
(3) Position 12341856 washer and buckle (part of seatbelt assembly 12480530) to left tunnel and
secure with 12340259-3 bolt as shown in figure 42. Tighten bolt to 35-40 lb-ft (48-54 N
•
m).
Back to Top
