Section Il. REPAIR PROCEDURES

TM 55-4240-284-12&P

Section Il. REPAIR PROCEDURES

(1) Pull down the seat blade latching

3-3. General.

hook (item 17) and secure it so that the seat blade

a. Inspection. Inspect the rescue seat for

assembly may be installed.

rust, corrosion, debris and foreign material. In-

(2) Position the seat blade (item 24) on

spect metal components for burrs and sharp

the rescue seat body and align the seat blade

edges. Check for loose or missing bolts, nuts, or

mounting bolt holes.

screws.

(3) Install the seat blade mounting bolt,

b. Repair.

(item 21), spacer washers (item 12), spacer (item

(1) Remove rust, corrosion, and foreign

14) and blade retracting spring (item 13). Install

material with cleaning solvent.

the blade retracting spring so that tension is ap-

plied to hold the seat blade against the rescue

( 2 ) Remove burrs and smooth sharp

seat body.

edges with crocus cloth.

(4) Replace washer (item 12), nut (item

(3) Tighten loose bolts, nuts, or screws.

18), and secure the nut.

(4) Replace a broken or missing eye bolt

e. Lubrication.

cotter pin (item 7, fig. 3-1) with a serviceable like

item.

(1) Lubricate the seat blade pivot points

with light weight lubricating oil.

3-4. Seat Blade Assembly.

(2) Release the blade latching hook and

a. Description. The seat blade (item 24, fig.

check the seat blade for proper operation.

3-1) is made of 1/4-inch thick cast aluminum and

has two mounting flanges on the underside. A

latching hook retainer bolt (item 21) extends be-

3-5. Safety Strap Cover.

tween the two flanges to engage the seat blade

a. Description. The safety strap cover (item

latching hook (item 17) when the blade is in its

1) is a three-sided waterproof canvas cover at-

extended position. The blade retracting spring

tached to the upper portion of the rescue seat

(item 13) with a spacer washer on either side is

body with two self-tapping metal screws (item 9).

installed on the mounting bolt to hold the seat

The cover has three velco fasteners to provide

blade in its retracted position.

ready access to the safety straps (item 6) which

Inspection.

are stowed inside the cover. Two metal mounting

plates are sewed into the bottom seam of the cov-

( 1 ) Inspect the seat blade for bends,

er to provide secure attaching points for the cov-

breaks, cracks, burrs, sharp edges, and wear.

er; one slide fastener provides a form fit of cover

( 2 ) Inspect the seat blade retracting

to body assembly.

spring for bends, breaks, corrosion, and weak ten-

b. Inspection. Inspect the safety strap cover

sion.

for rips, cuts, frays, stuck or broken slide fastener,

( 3 ) Replace a defective seat blade or

loose or missing screws, broken or loose stitching

blade retracting spring as required.

in velco fasteners, and deterioration.

Removal.

c . Removal. Remove the two self-tapping

metal screws (item 9), open the detachable slide

(1) Fold the seat blade (item 24) to its re-

fastener, and remove the safety strap cover.

tracted position.

d. Installation.

(2) Remove nut (item 18) and washer

(item 12).

(1) Position a serviceable cover (item 1)

as shown in figure 3-1. Overlap the ends of the

(3) Remove the seat blade mounting bolt

bottom seam and align the holes in the cover

(item 21), blade retracting spring (item 13), spacer

mounting plates with the rescue seat body.

washers (item 12), spacer (item 14), and remove

the seat blade.

( 2 ) Install the two self-tapping metal

screws (item 9) and fasten the detachable slide

d. Installation.

fastener.

3-3